pkg/report: improve parsing of task hung reports

The problem with task hung reports is that they manifest at random victim stacks,
rather at the root cause stack. E.g. if there is something wrong with RCU subsystem,
we are getting hangs all over the kernel on all synchronize_* calls.
So before resotring to the common logic of skipping some common frames,
we look for 2 common buckets: hangs on synchronize_rcu and hangs on rtnl_lock
and group these together.

16 files changed, 3099 insertions, 2 deletions

diff --git a/pkg/report/testdata/linux/report/179 b/pkg/report/testdata/linux/report/179
index d2b2407a2..ec20f04f0 100644
--- a/pkg/report/testdata/linux/report/179
+++ b/pkg/report/testdata/linux/report/179
@@ -1,4 +1,4 @@
-TITLE: INFO: task hung in input_close_device
+TITLE: INFO: task hung in synchronize_rcu
 TYPE: HANG
 
 [  369.632214] INFO: task syz-executor4:8442 blocked for more than 120 seconds.
diff --git a/pkg/report/testdata/linux/report/432 b/pkg/report/testdata/linux/report/432
new file mode 100644
index 000000000..c914fbed8
--- /dev/null
+++ b/pkg/report/testdata/linux/report/432
@@ -0,0 +1,319 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[ 1686.611836][ T1064] INFO: task kworker/u4:5:9381 blocked for more than 143 seconds.
+[ 1686.620470][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1686.626521][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1686.635486][ T1064] kworker/u4:5    D24432  9381      2 0x80004000
+[ 1686.642084][ T1064] Workqueue: netns cleanup_net
+[ 1686.646957][ T1064] Call Trace:
+[ 1686.650254][ T1064]  __schedule+0x94f/0x1e70
+[ 1686.676222][ T1064]  schedule+0xd9/0x260
+[ 1686.680288][ T1064]  synchronize_rcu_expedited+0x57f/0x5f0
+[ 1686.718774][ T1064]  synchronize_net+0x3b/0x60
+[ 1686.723521][ T1064]  rollback_registered_many+0xb2c/0xfc0
+[ 1686.750483][ T1064]  unregister_netdevice_many.part.0+0x1b/0x1f0
+[ 1686.757330][ T1064]  unregister_netdevice_many+0x3b/0x50
+[ 1686.762871][ T1064]  ip_tunnel_delete_nets+0x41e/0x5f0
+[ 1686.778650][ T1064]  ipip_exit_batch_net+0x23/0x30
+[ 1686.783766][ T1064]  ops_exit_list.isra.0+0xfc/0x150
+[ 1686.788975][ T1064]  cleanup_net+0x4e2/0xa60
+[ 1686.819439][ T1064]  process_one_work+0x9af/0x1740
+[ 1686.834579][ T1064]  worker_thread+0x98/0xe40
+[ 1686.844364][ T1064]  kthread+0x361/0x430
+[ 1686.860124][ T1064]  ret_from_fork+0x24/0x30
+[ 1686.864788][ T1064] INFO: task syz-executor.3:1217 blocked for more than 143 seconds.
+[ 1686.873562][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1686.878575][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1686.887898][ T1064] syz-executor.3  D28392  1217  18405 0x00004004
+[ 1686.894324][ T1064] Call Trace:
+[ 1686.897637][ T1064]  __schedule+0x94f/0x1e70
+[ 1686.917150][ T1064]  schedule+0xd9/0x260
+[ 1686.921212][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1686.926726][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1686.957852][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1686.971924][ T1064]  rtnl_lock+0x17/0x20
+[ 1686.975987][ T1064]  dev_ioctl+0x1a4/0xc60
+[ 1686.980272][ T1064]  sock_do_ioctl+0x1b7/0x2f0
+[ 1687.006680][ T1064]  sock_ioctl+0x3ed/0x780
+[ 1687.026399][ T1064]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1687.074093][ T1064]  ksys_ioctl+0xab/0xd0
+[ 1687.078248][ T1064]  __x64_sys_ioctl+0x73/0xb0
+[ 1687.082896][ T1064]  do_syscall_64+0xfa/0x760
+[ 1687.087416][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1687.093433][ T1064] RIP: 0033:0x459a59
+[ 1687.097333][ T1064] Code: Bad RIP value.
+[ 1687.101415][ T1064] RSP: 002b:00007feddb630c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1687.109905][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1687.119236][ T1064] RDX: 00000000200000c0 RSI: 0000000000008991 RDI: 0000000000000005
+[ 1687.127330][ T1064] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1687.135614][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007feddb6316d4
+[ 1687.144110][ T1064] R13: 00000000004c58aa R14: 00000000004da440 R15: 00000000ffffffff
+[ 1687.152175][ T1064] INFO: task syz-executor.1:1338 blocked for more than 143 seconds.
+[ 1687.160152][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1687.165249][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1687.174080][ T1064] syz-executor.1  D28880  1338   2182 0x00000004
+[ 1687.180417][ T1064] Call Trace:
+[ 1687.183771][ T1064]  __schedule+0x94f/0x1e70
+[ 1687.203084][ T1064]  schedule+0xd9/0x260
+[ 1687.207156][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1687.212702][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1687.231630][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1687.241784][ T1064]  rtnl_lock+0x17/0x20
+[ 1687.245852][ T1064]  sock_do_ioctl+0x24e/0x2f0
+[ 1687.274533][ T1064]  sock_ioctl+0x3ed/0x780
+[ 1687.293258][ T1064]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1687.338989][ T1064]  ksys_ioctl+0xab/0xd0
+[ 1687.343256][ T1064]  __x64_sys_ioctl+0x73/0xb0
+[ 1687.347867][ T1064]  do_syscall_64+0xfa/0x760
+[ 1687.352479][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1687.358378][ T1064] RIP: 0033:0x459a59
+[ 1687.362351][ T1064] Code: Bad RIP value.
+[ 1687.366415][ T1064] RSP: 002b:00007f885ada0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1687.374926][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1687.383118][ T1064] RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005
+[ 1687.391539][ T1064] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1687.399541][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f885ada16d4
+[ 1687.408236][ T1064] R13: 00000000004c3458 R14: 00000000004d7080 R15: 00000000ffffffff
+[ 1687.416390][ T1064] INFO: task syz-executor.1:1349 blocked for more than 144 seconds.
+[ 1687.424491][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1687.429515][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1687.438289][ T1064] syz-executor.1  D28880  1349   2182 0x00000004
+[ 1687.444705][ T1064] Call Trace:
+[ 1687.447998][ T1064]  __schedule+0x94f/0x1e70
+[ 1687.467313][ T1064]  schedule+0xd9/0x260
+[ 1687.471456][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1687.477073][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1687.519480][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1687.529283][ T1064]  rtnetlink_rcv_msg+0x40a/0xb00
+[ 1687.555672][ T1064]  netlink_rcv_skb+0x177/0x450
+[ 1687.580893][ T1064]  rtnetlink_rcv+0x1d/0x30
+[ 1687.585408][ T1064]  netlink_unicast+0x531/0x710
+[ 1687.607189][ T1064]  netlink_sendmsg+0x8a5/0xd60
+[ 1687.639353][ T1064]  sock_sendmsg+0xd7/0x130
+[ 1687.643876][ T1064]  ___sys_sendmsg+0x803/0x920
+[ 1687.684377][ T1064]  __sys_sendmsg+0x105/0x1d0
+[ 1687.715313][ T1064]  __x64_sys_sendmsg+0x78/0xb0
+[ 1687.720083][ T1064]  do_syscall_64+0xfa/0x760
+[ 1687.724659][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1687.730555][ T1064] RIP: 0033:0x459a59
+[ 1687.734676][ T1064] Code: Bad RIP value.
+[ 1687.738737][ T1064] RSP: 002b:00007f885ad7fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
+[ 1687.747241][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1687.755311][ T1064] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
+[ 1687.763532][ T1064] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
+[ 1687.771799][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f885ad806d4
+[ 1687.779857][ T1064] R13: 00000000004c7508 R14: 00000000004dd110 R15: 00000000ffffffff
+[ 1687.787928][ T1064] INFO: task syz-executor.4:1342 blocked for more than 144 seconds.
+[ 1687.796619][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1687.801734][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1687.810492][ T1064] syz-executor.4  D28584  1342   3592 0x00000004
+[ 1687.817001][ T1064] Call Trace:
+[ 1687.820302][ T1064]  __schedule+0x94f/0x1e70
+[ 1687.839678][ T1064]  schedule+0xd9/0x260
+[ 1687.843823][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1687.849286][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1687.891113][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1687.901058][ T1064]  rtnetlink_rcv_msg+0x40a/0xb00
+[ 1687.922366][ T1064]  netlink_rcv_skb+0x177/0x450
+[ 1687.947516][ T1064]  rtnetlink_rcv+0x1d/0x30
+[ 1687.952193][ T1064]  netlink_unicast+0x531/0x710
+[ 1687.973972][ T1064]  netlink_sendmsg+0x8a5/0xd60
+[ 1688.006088][ T1064]  sock_sendmsg+0xd7/0x130
+[ 1688.010521][ T1064]  ___sys_sendmsg+0x803/0x920
+[ 1688.050200][ T1064]  __sys_sendmsg+0x105/0x1d0
+[ 1688.081993][ T1064]  __x64_sys_sendmsg+0x78/0xb0
+[ 1688.086754][ T1064]  do_syscall_64+0xfa/0x760
+[ 1688.091241][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1688.097198][ T1064] RIP: 0033:0x459a59
+[ 1688.101097][ T1064] Code: Bad RIP value.
+[ 1688.105330][ T1064] RSP: 002b:00007f86af67dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
+[ 1688.113998][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1688.122298][ T1064] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
+[ 1688.130489][ T1064] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1688.138747][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f86af67e6d4
+[ 1688.146880][ T1064] R13: 00000000004c7bd7 R14: 00000000004dd968 R15: 00000000ffffffff
+[ 1688.154937][ T1064] INFO: task syz-executor.4:1368 blocked for more than 144 seconds.
+[ 1688.162971][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1688.168006][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1688.176897][ T1064] syz-executor.4  D28584  1368   3592 0x00000004
+[ 1688.183775][ T1064] Call Trace:
+[ 1688.187061][ T1064]  __schedule+0x94f/0x1e70
+[ 1688.207038][ T1064]  schedule+0xd9/0x260
+[ 1688.211108][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1688.216693][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1688.259389][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1688.269176][ T1064]  rtnetlink_rcv_msg+0x40a/0xb00
+[ 1688.289665][ T1064]  netlink_rcv_skb+0x177/0x450
+[ 1688.316310][ T1064]  rtnetlink_rcv+0x1d/0x30
+[ 1688.320735][ T1064]  netlink_unicast+0x531/0x710
+[ 1688.342613][ T1064]  netlink_sendmsg+0x8a5/0xd60
+[ 1688.375911][ T1064]  sock_sendmsg+0xd7/0x130
+[ 1688.380328][ T1064]  ___sys_sendmsg+0x803/0x920
+[ 1688.419487][ T1064]  __sys_sendmsg+0x105/0x1d0
+[ 1688.451127][ T1064]  __x64_sys_sendmsg+0x78/0xb0
+[ 1688.456248][ T1064]  do_syscall_64+0xfa/0x760
+[ 1688.460858][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1688.466819][ T1064] RIP: 0033:0x459a59
+[ 1688.470724][ T1064] Code: Bad RIP value.
+[ 1688.474898][ T1064] RSP: 002b:00007f86af63bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
+[ 1688.483402][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1688.491572][ T1064] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
+[ 1688.499638][ T1064] RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
+[ 1688.507824][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f86af63c6d4
+[ 1688.515857][ T1064] R13: 00000000004c7bd7 R14: 00000000004dd968 R15: 00000000ffffffff
+[ 1688.523960][ T1064] INFO: task syz-executor.5:1347 blocked for more than 145 seconds.
+[ 1688.532250][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1688.537322][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1688.546056][ T1064] syz-executor.5  D29344  1347   2287 0x00000004
+[ 1688.552481][ T1064] Call Trace:
+[ 1688.555867][ T1064]  __schedule+0x94f/0x1e70
+[ 1688.575704][ T1064]  schedule+0xd9/0x260
+[ 1688.579771][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1688.585311][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1688.603972][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1688.613765][ T1064]  rtnl_lock+0x17/0x20
+[ 1688.617930][ T1064]  sock_do_ioctl+0x24e/0x2f0
+[ 1688.645974][ T1064]  sock_ioctl+0x3ed/0x780
+[ 1688.664760][ T1064]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1688.712520][ T1064]  ksys_ioctl+0xab/0xd0
+[ 1688.716713][ T1064]  __x64_sys_ioctl+0x73/0xb0
+[ 1688.721286][ T1064]  do_syscall_64+0xfa/0x760
+[ 1688.726041][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1688.731988][ T1064] RIP: 0033:0x459a59
+[ 1688.736307][ T1064] Code: Bad RIP value.
+[ 1688.740460][ T1064] RSP: 002b:00007f48b4a13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1688.748911][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1688.757127][ T1064] RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
+[ 1688.765162][ T1064] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1688.773381][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48b4a146d4
+[ 1688.781345][ T1064] R13: 00000000004c3458 R14: 00000000004d7080 R15: 00000000ffffffff
+[ 1688.789486][ T1064] INFO: task syz-executor.5:1351 blocked for more than 145 seconds.
+[ 1688.797949][ T1064]       Not tainted 5.4.0-rc2+ #0
+[ 1688.803181][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1688.811972][ T1064] syz-executor.5  D27160  1351   2287 0x00000004
+[ 1688.818597][ T1064] Call Trace:
+[ 1688.821962][ T1064]  __schedule+0x94f/0x1e70
+[ 1688.842150][ T1064]  schedule+0xd9/0x260
+[ 1688.846241][ T1064]  schedule_preempt_disabled+0x13/0x20
+[ 1688.851863][ T1064]  __mutex_lock+0x7b0/0x13c0
+[ 1688.870559][ T1064]  mutex_lock_nested+0x16/0x20
+[ 1688.880530][ T1064]  rtnl_lock+0x17/0x20
+[ 1688.884656][ T1064]  sock_do_ioctl+0x24e/0x2f0
+[ 1688.913103][ T1064]  sock_ioctl+0x3ed/0x780
+[ 1688.932274][ T1064]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1688.978552][ T1064]  ksys_ioctl+0xab/0xd0
+[ 1688.982785][ T1064]  __x64_sys_ioctl+0x73/0xb0
+[ 1688.987397][ T1064]  do_syscall_64+0xfa/0x760
+[ 1688.991999][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1688.997892][ T1064] RIP: 0033:0x459a59
+[ 1689.001878][ T1064] Code: Bad RIP value.
+[ 1689.005949][ T1064] RSP: 002b:00007f48b49f2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1689.014996][ T1064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[ 1689.023073][ T1064] RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
+[ 1689.031272][ T1064] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
+[ 1689.039386][ T1064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48b49f36d4
+[ 1689.047398][ T1064] R13: 00000000004c3458 R14: 00000000004d7080 R15: 00000000ffffffff
+[ 1689.055479][ T1064] 
+[ 1689.055479][ T1064] Showing all locks held in the system:
+[ 1689.063269][ T1064] 1 lock held by khungtaskd/1064:
+[ 1689.068317][ T1064]  #0: ffffffff88faae00 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
+[ 1689.077887][ T1064] 1 lock held by rsyslogd/9182:
+[ 1689.082925][ T1064]  #0: ffff8880a88b9360 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
+[ 1689.092504][ T1064] 2 locks held by getty/9304:
+[ 1689.097187][ T1064]  #0: ffff88807bf93090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.106261][ T1064]  #1: ffffc90005f712e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.115981][ T1064] 2 locks held by getty/9305:
+[ 1689.120640][ T1064]  #0: ffff8880a7c56090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.130099][ T1064]  #1: ffffc90005f612e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.139967][ T1064] 2 locks held by getty/9306:
+[ 1689.144767][ T1064]  #0: ffff8880a7a97090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.153861][ T1064]  #1: ffffc90005f592e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.163495][ T1064] 2 locks held by getty/9307:
+[ 1689.168288][ T1064]  #0: ffff8880a1186090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.177582][ T1064]  #1: ffffc90005f5d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.187383][ T1064] 2 locks held by getty/9308:
+[ 1689.192148][ T1064]  #0: ffff8880a8ae4090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.201149][ T1064]  #1: ffffc90005f6d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.210810][ T1064] 2 locks held by getty/9309:
+[ 1689.215543][ T1064]  #0: ffff8880998ee090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.225425][ T1064]  #1: ffffc90005f752e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.235172][ T1064] 2 locks held by getty/9310:
+[ 1689.239851][ T1064]  #0: ffff888099c22090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1689.248864][ T1064]  #1: ffffc90005f452e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1689.258516][ T1064] 4 locks held by kworker/u4:5/9381:
+[ 1689.263871][ T1064]  #0: ffff8880a9a1ed28 ((wq_completion)netns){+.+.}, at: process_one_work+0x88b/0x1740
+[ 1689.273799][ T1064]  #1: ffff88806a60fdc0 (net_cleanup_work){+.+.}, at: process_one_work+0x8c1/0x1740
+[ 1689.283367][ T1064]  #2: ffffffff8998ae88 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0xa60
+[ 1689.292407][ T1064]  #3: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.301396][ T1064] 3 locks held by kworker/0:11/804:
+[ 1689.306695][ T1064]  #0: ffff88809c339528 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x88b/0x1740
+[ 1689.317220][ T1064]  #1: ffff888075fe7dc0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8c1/0x1740
+[ 1689.327083][ T1064]  #2: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.335297][ T1064] 1 lock held by syz-executor.3/1217:
+[ 1689.340645][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.348739][ T1064] 1 lock held by syz-executor.1/1338:
+[ 1689.355122][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.363228][ T1064] 1 lock held by syz-executor.1/1349:
+[ 1689.368702][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00
+[ 1689.377643][ T1064] 1 lock held by syz-executor.4/1342:
+[ 1689.383073][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00
+[ 1689.392133][ T1064] 1 lock held by syz-executor.4/1368:
+[ 1689.397502][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00
+[ 1689.406420][ T1064] 1 lock held by syz-executor.5/1347:
+[ 1689.412088][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.420092][ T1064] 1 lock held by syz-executor.5/1351:
+[ 1689.425531][ T1064]  #0: ffffffff899980e0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1689.433598][ T1064] 
+[ 1689.435911][ T1064] =============================================
+[ 1689.435911][ T1064] 
+[ 1689.444382][ T1064] NMI backtrace for cpu 1
+[ 1689.448720][ T1064] CPU: 1 PID: 1064 Comm: khungtaskd Not tainted 5.4.0-rc2+ #0
+[ 1689.456179][ T1064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1689.466246][ T1064] Call Trace:
+[ 1689.469529][ T1064]  dump_stack+0x172/0x1f0
+[ 1689.473911][ T1064]  nmi_cpu_backtrace.cold+0x70/0xb2
+[ 1689.491234][ T1064]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[ 1689.497219][ T1064]  arch_trigger_cpumask_backtrace+0x14/0x20
+[ 1689.503102][ T1064]  watchdog+0x9d0/0xef0
+[ 1689.507288][ T1064]  kthread+0x361/0x430
+[ 1689.523149][ T1064]  ret_from_fork+0x24/0x30
+[ 1689.528123][ T1064] Sending NMI from CPU 1 to CPUs 0:
+[ 1689.533932][    C0] NMI backtrace for cpu 0
+[ 1689.533938][    C0] CPU: 0 PID: 20178 Comm: kworker/u4:10 Not tainted 5.4.0-rc2+ #0
+[ 1689.533944][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1689.533947][    C0] Workqueue: bat_events batadv_nc_worker
+[ 1689.533954][    C0] RIP: 0010:check_memory_region+0x3a/0x1a0
+[ 1689.533964][    C0] Code: 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 41 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 00 00 fc ff df <4d> 89 da 49 c1 e8 03 4d 8d 24 00 49 c1 ea 03 49 01 c2 4c 89 e0 49
+[ 1689.533967][    C0] RSP: 0018:ffff8880724d7a88 EFLAGS: 00000016
+[ 1689.533974][    C0] RAX: dffffc0000000000 RBX: 00000000000005a5 RCX: ffffffff8159025c
+[ 1689.533979][    C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8a770a10
+[ 1689.533984][    C0] RBP: ffff8880724d7aa0 R08: ffffffff8a770a10 R09: fffffbfff14ee12d
+[ 1689.533988][    C0] R10: ffff888073a90ee8 R11: ffffffff8a770a17 R12: 00000000ef5f26e2
+[ 1689.533993][    C0] R13: ffffffff89c5eb30 R14: ffff888073a90ec0 R15: 0000000000000000
+[ 1689.533998][    C0] FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
+[ 1689.534002][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[ 1689.534006][    C0] CR2: ffffffffff600400 CR3: 00000000a16ff000 CR4: 00000000001406f0
+[ 1689.534011][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[ 1689.534015][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[ 1689.534018][    C0] Call Trace:
+[ 1689.534021][    C0]  __kasan_check_read+0x11/0x20
+[ 1689.534025][    C0]  __lock_acquire+0x19ec/0x4a00
+[ 1689.534044][    C0]  lock_acquire+0x190/0x410
+[ 1689.534052][    C0]  batadv_nc_process_nc_paths.part.0+0xe4/0x3c0
+[ 1689.534063][    C0]  batadv_nc_worker+0x550/0x760
+[ 1689.534066][    C0]  process_one_work+0x9af/0x1740
+[ 1689.534076][    C0]  worker_thread+0x98/0xe40
+[ 1689.534079][    C0]  kthread+0x361/0x430
+[ 1689.534090][    C0]  ret_from_fork+0x24/0x30
+[ 1689.535270][ T1064] Kernel panic - not syncing: hung_task: blocked tasks
+[ 1689.792886][ T1064] CPU: 1 PID: 1064 Comm: khungtaskd Not tainted 5.4.0-rc2+ #0
+[ 1689.800323][ T1064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1689.810370][ T1064] Call Trace:
+[ 1689.813664][ T1064]  dump_stack+0x172/0x1f0
+[ 1689.817986][ T1064]  panic+0x2e3/0x75c
+[ 1689.861833][ T1064]  watchdog+0x9e1/0xef0
+[ 1689.865972][ T1064]  kthread+0x361/0x430
+[ 1689.881761][ T1064]  ret_from_fork+0x24/0x30
+[ 1689.887894][ T1064] Kernel Offset: disabled
+[ 1689.892248][ T1064] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/433 b/pkg/report/testdata/linux/report/433
new file mode 100644
index 000000000..046a70690
--- /dev/null
+++ b/pkg/report/testdata/linux/report/433
@@ -0,0 +1,53 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  741.089420][ T1057] INFO: task syz-executor.2:28539 blocked for more than 143 seconds.
+[  741.097513][ T1057]       Not tainted 5.3.0-rc8+ #0
+[  741.102707][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  741.111419][ T1057] syz-executor.2  D29832 28539   9888 0x00000004
+[  741.117768][ T1057] Call Trace:
+[  741.121401][ T1057]  __schedule+0x755/0x1580
+[  741.141392][ T1057]  schedule+0xd9/0x260
+[  741.145446][ T1057]  synchronize_rcu_expedited+0x544/0x5b0
+[  741.203899][ T1057]  synchronize_net+0x3b/0x60
+[  741.208475][ T1057]  __unregister_prot_hook+0x274/0x2f0
+[  741.219885][ T1057]  packet_do_bind+0x6be/0xc50
+[  741.224557][ T1057]  packet_bind+0x15d/0x1c0
+[  741.229099][ T1057]  __sys_bind+0x239/0x290
+[  741.268266][ T1057]  __x64_sys_bind+0x73/0xb0
+[  741.272831][ T1057]  do_syscall_64+0xfd/0x6a0
+[  741.277346][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  741.283472][ T1057] RIP: 0033:0x4598e9
+[  741.287361][ T1057] Code: 24 18 0f b6 05 2f d1 3b 01 3c 01 76 0a 48 8b 6c 24 18 48 83 c4 20 c3 75 07 e8 63 08 fd ff 0f 0b c6 05 11 d1 3b 01 01 48 b8 00 <00> 00 00 00 00 f0 7f 48 89 04 24 e8 a7 dd fa ff f2 0f 10 44 24 08
+[  741.307278][ T1057] RSP: 002b:00007fba13a0dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
+[  741.315731][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9
+[  741.323778][    C0] protocol 88fb is buggy, dev hsr_slave_1
+[  741.329811][ T1057] RDX: 0000000000000014 RSI: 0000000020000640 RDI: 0000000000000003
+[  741.337778][ T1057] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[  741.345791][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fba13a0e6d4
+[  741.353970][ T1057] R13: 00000000004bfa92 R14: 00000000004d16e0 R15: 00000000ffffffff
+[  741.362521][ T1057] INFO: lockdep is turned off.
+[  741.367274][ T1057] NMI backtrace for cpu 0
+[  741.371754][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc8+ #0
+[  741.379204][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  741.389246][ T1057] Call Trace:
+[  741.392522][ T1057]  dump_stack+0x172/0x1f0
+[  741.396841][ T1057]  nmi_cpu_backtrace.cold+0x70/0xb2
+[  741.413873][ T1057]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[  741.419841][ T1057]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  741.425725][ T1057]  watchdog+0x9d0/0xef0
+[  741.429867][ T1057]  kthread+0x361/0x430
+[  741.446104][ T1057]  ret_from_fork+0x24/0x30
+[  741.450601][ T1057] Sending NMI from CPU 0 to CPUs 1:
+[  741.455827][    C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10
+[  741.456945][ T1057] Kernel panic - not syncing: hung_task: blocked tasks
+[  741.471068][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc8+ #0
+[  741.478649][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  741.488678][ T1057] Call Trace:
+[  741.491949][ T1057]  dump_stack+0x172/0x1f0
+[  741.496410][ T1057]  panic+0x2dc/0x755
+[  741.540304][ T1057]  watchdog+0x9e1/0xef0
+[  741.544437][ T1057]  kthread+0x361/0x430
+[  741.560235][ T1057]  ret_from_fork+0x24/0x30
+[  741.566179][ T1057] Kernel Offset: disabled
+[  741.570509][ T1057] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/434 b/pkg/report/testdata/linux/report/434
new file mode 100644
index 000000000..76a411d03
--- /dev/null
+++ b/pkg/report/testdata/linux/report/434
@@ -0,0 +1,84 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  405.210796][ T1057] INFO: task syz-executor.3:18078 blocked for more than 143 seconds.
+[  405.219079][ T1057]       Not tainted 5.3.0-rc5 #135
+[  405.224245][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  405.232952][ T1057] syz-executor.3  D28864 18078   9699 0x00004006
+[  405.239370][ T1057] Call Trace:
+[  405.242711][ T1057]  __schedule+0x755/0x1580
+[  405.262618][ T1057]  schedule+0xa8/0x270
+[  405.266706][ T1057]  synchronize_rcu_expedited+0x544/0x5b0
+[  405.333604][ T1057]  synchronize_net+0x3b/0x60
+[  405.338220][ T1057]  packet_release+0x9cf/0xcb0
+[  405.368338][ T1057]  __sock_release+0xce/0x280
+[  405.372974][ T1057]  sock_close+0x1e/0x30
+[  405.377139][ T1057]  __fput+0x2ff/0x890
+[  405.386034][ T1057]  ____fput+0x16/0x20
+[  405.390013][ T1057]  task_work_run+0x145/0x1c0
+[  405.397162][ T1057]  get_signal+0x2078/0x2500
+[  405.428810][ T1057]  do_signal+0x87/0x1700
+[  405.462833][ T1057]  exit_to_usermode_loop+0x286/0x380
+[  405.468263][ T1057]  do_syscall_64+0x5a9/0x6a0
+[  405.472993][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  405.478908][ T1057] RIP: 0033:0x459829
+[  405.482853][ T1057] Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
+[  405.502517][ T1057] RSP: 002b:00007f7bd6a5ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
+[  405.511028][ T1057] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000459829
+[  405.519020][ T1057] RDX: 0000000000000014 RSI: 0000000020000040 RDI: 0000000000000003
+[  405.527053][ T1057] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[  405.535246][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7bd6a5b6d4
+[  405.543265][ T1057] R13: 00000000004bf9f9 R14: 00000000004d15c0 R15: 00000000ffffffff
+[  405.551288][ T1057] INFO: task syz-executor.0:18081 blocked for more than 143 seconds.
+[  405.559335][ T1057]       Not tainted 5.3.0-rc5 #135
+[  405.564509][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  405.573305][ T1057] syz-executor.0  D28784 18081   9691 0x00004006
+[  405.580023][ T1057] Call Trace:
+[  405.583429][ T1057]  __schedule+0x755/0x1580
+[  405.603357][ T1057]  schedule+0xa8/0x270
+[  405.607468][ T1057]  synchronize_rcu_expedited+0x544/0x5b0
+[  405.673780][ T1057]  synchronize_net+0x3b/0x60
+[  405.678438][ T1057]  packet_release+0x9cf/0xcb0
+[  405.708170][ T1057]  __sock_release+0xce/0x280
+[  405.712797][ T1057]  sock_close+0x1e/0x30
+[  405.716965][ T1057]  __fput+0x2ff/0x890
+[  405.725858][ T1057]  ____fput+0x16/0x20
+[  405.729836][ T1057]  task_work_run+0x145/0x1c0
+[  405.734605][ T1057]  get_signal+0x2078/0x2500
+[  405.767355][ T1057]  do_signal+0x87/0x1700
+[  405.801628][ T1057]  exit_to_usermode_loop+0x286/0x380
+[  405.806942][ T1057]  do_syscall_64+0x5a9/0x6a0
+[  405.811577][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  405.817475][ T1057] RIP: 0033:0x459829
+[  405.821445][ T1057] Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
+[  405.841371][ T1057] RSP: 002b:00007fd45a61cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
+[  405.849792][ T1057] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000459829
+[  405.858156][ T1057] RDX: 0000000000000014 RSI: 0000000020000040 RDI: 0000000000000003
+[  405.866194][ T1057] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[  405.874213][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd45a61d6d4
+[  405.882231][ T1057] R13: 00000000004bf9f9 R14: 00000000004d15c0 R15: 00000000ffffffff
+[  405.890202][ T1057] INFO: lockdep is turned off.
+[  405.895004][ T1057] NMI backtrace for cpu 1
+[  405.899363][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc5 #135
+[  405.906880][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  405.917056][ T1057] Call Trace:
+[  405.920331][ T1057]  dump_stack+0x172/0x1f0
+[  405.924640][ T1057]  nmi_cpu_backtrace.cold+0x70/0xb2
+[  405.941725][ T1057]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[  405.947828][ T1057]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  405.953698][ T1057]  watchdog+0x9d0/0xef0
+[  405.958529][ T1057]  kthread+0x361/0x430
+[  405.974331][ T1057]  ret_from_fork+0x24/0x30
+[  405.978893][ T1057] Sending NMI from CPU 1 to CPUs 0:
+[  405.984191][    C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10
+[  405.985458][ T1057] Kernel panic - not syncing: hung_task: blocked tasks
+[  405.999272][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc5 #135
+[  406.006919][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  406.017046][ T1057] Call Trace:
+[  406.020334][ T1057]  dump_stack+0x172/0x1f0
+[  406.024648][ T1057]  panic+0x2dc/0x755
+[  406.068613][ T1057]  watchdog+0x9e1/0xef0
+[  406.072754][ T1057]  kthread+0x361/0x430
+[  406.088619][ T1057]  ret_from_fork+0x24/0x30
+[  406.094205][ T1057] Kernel Offset: disabled
+[  406.098552][ T1057] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/435 b/pkg/report/testdata/linux/report/435
new file mode 100644
index 000000000..ae0c7490c
--- /dev/null
+++ b/pkg/report/testdata/linux/report/435
@@ -0,0 +1,131 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  926.100386] INFO: task kworker/u4:12:9048 blocked for more than 140 seconds.
+[  926.107664]       Not tainted 4.19.0-rc2+ #6
+[  926.112836] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  926.121293] kworker/u4:12   D10792  9048      2 0x80000000
+[  926.126968] Workqueue: events_unbound fsnotify_mark_destroy_workfn
+[  926.139232] Call Trace:
+[  926.142419]  __schedule+0x86c/0x1ed0
+[  926.194094]  schedule+0xfe/0x460
+[  926.216547]  schedule_timeout+0x1cc/0x260
+[  926.245000]  wait_for_completion+0x427/0x8a0
+[  926.274418]  __synchronize_srcu+0x184/0x230
+[  926.298281]  synchronize_srcu+0x440/0x5ab
+[  926.331114]  fsnotify_mark_destroy_workfn+0x1be/0x510
+[  926.360984]  process_one_work+0xc90/0x1b90
+[  926.477062]  worker_thread+0x17f/0x1390
+[  926.564207]  kthread+0x35a/0x420
+[  926.576486]  ret_from_fork+0x3a/0x50
+[  926.581133] 
+[  926.581133] Showing all locks held in the system:
+[  926.587490] 1 lock held by khungtaskd/984:
+[  926.592275]  #0: 00000000b38e653c (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424
+[  926.601453] 1 lock held by rsyslogd/5317:
+[  926.605607]  #0: 00000000d292a055 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200
+[  926.614208] 2 locks held by getty/5439:
+[  926.618199]  #0: 0000000056010e53 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.627033]  #1: 0000000099b700ed (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.636461] 2 locks held by getty/5440:
+[  926.640967]  #0: 00000000ebabf63b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.649267]  #1: 0000000049a4581f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.658729] 2 locks held by getty/5441:
+[  926.663260]  #0: 0000000079d1f009 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.672064]  #1: 0000000047aed8e4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.681484] 2 locks held by getty/5442:
+[  926.685471]  #0: 00000000400826c6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.694452]  #1: 00000000dbe3dd22 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.703881] 2 locks held by getty/5443:
+[  926.707865]  #0: 000000002edc9d22 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.716725]  #1: 0000000049e6e57a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.726178] 2 locks held by getty/5444:
+[  926.730685]  #0: 00000000c8e5c3c5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.738980]  #1: 00000000333eb678 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.748834] 2 locks held by getty/5445:
+[  926.753325]  #0: 00000000a8e6e545 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40
+[  926.762128]  #1: 00000000561394bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0
+[  926.771585] 2 locks held by kworker/u4:12/9048:
+[  926.776274]  #0: 000000002977e987 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0xb43/0x1b90
+[  926.786841]  #1: 00000000233e961c ((reaper_work).work){+.+.}, at: process_one_work+0xb9a/0x1b90
+[  926.796472] 4 locks held by syz-executor6/30089:
+[  926.801767] 1 lock held by syz-executor2/30088:
+[  926.806452] 
+[  926.808085] =============================================
+[  926.808085] 
+[  926.815661] NMI backtrace for cpu 1
+[  926.819311] CPU: 1 PID: 984 Comm: khungtaskd Not tainted 4.19.0-rc2+ #6
+[  926.826066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  926.835424] Call Trace:
+[  926.838028]  dump_stack+0x1c4/0x2b4
+[  926.852447]  nmi_cpu_backtrace.cold.3+0x63/0xa2
+[  926.862343]  nmi_trigger_cpumask_backtrace+0x1b3/0x1ed
+[  926.867653]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  926.872858]  watchdog+0xb3e/0x1050
+[  926.942491]  kthread+0x35a/0x420
+[  926.954544]  ret_from_fork+0x3a/0x50
+[  926.958457] Sending NMI from CPU 1 to CPUs 0:
+[  926.965218] NMI backtrace for cpu 0
+[  926.965236] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.860 msecs
+[  926.965241] CPU: 0 PID: 30089 Comm: syz-executor6 Not tainted 4.19.0-rc2+ #6
+[  926.965253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  926.965257] RIP: 0010:mark_lock+0x1f/0x1cb0
+[  926.965269] Code: e8 a6 d1 61 00 eb 87 0f 1f 40 00 55 4c 8d 46 20 41 89 d1 49 89 fb 48 ba 00 00 00 00 00 fc ff df 48 89 e5 41 57 44 89 c9 41 56 <4c> 8d 7d d8 41 be 01 00 00 00 41 55 41 d3 e6 41 54 49 89 f4 53 48
+[  926.965274] RSP: 0018:ffff8801dae07660 EFLAGS: 00000046
+[  926.965299] RAX: 000000000000000c RBX: 0000000000000053 RCX: 0000000000000000
+[  926.965305] RDX: dffffc0000000000 RSI: ffff8801bdd82ad0 RDI: ffff8801bdd82200
+[  926.965326] RBP: ffff8801dae07670 R08: ffff8801bdd82af0 R09: 0000000000000000
+[  926.965333] R10: ffff8801bdd82ad0 R11: ffff8801bdd82200 R12: ffff8801bdd82af2
+[  926.965340] R13: 0000000000000040 R14: ffff8801bdd82200 R15: 000000000000000c
+[  926.965348] FS:  00007faae8231700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
+[  926.965354] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[  926.965360] CR2: 0000000000000000 CR3: 000000018daa6000 CR4: 00000000001426f0
+[  926.965367] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[  926.965374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[  926.965377] Call Trace:
+[  926.965381]  <IRQ>
+[  926.965385]  __lock_acquire+0x1564/0x4ec0
+[  926.965468]  lock_acquire+0x1ed/0x520
+[  926.965497]  _raw_spin_lock_irq+0x61/0x80
+[  926.965507]  __hrtimer_run_queues+0x488/0x10d0
+[  926.965572]  hrtimer_interrupt+0x313/0x780
+[  926.965577]  smp_apic_timer_interrupt+0x1a1/0x760
+[  926.965648]  apic_timer_interrupt+0xf/0x20
+[  926.965652]  </IRQ>
+[  926.965657] RIP: 0010:rcu_lockdep_current_cpu_online+0x189/0x2d0
+[  926.965673] Code: 49 c1 e8 03 43 80 3c 30 00 0f 85 c0 00 00 00 48 c7 c1 c0 0e 17 89 48 03 1c c1 48 8d 7b 20 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 b7 00 00 00 48 8d 7b 28 48 8b 43 20 49 89 f8 49 c1 e8 03 43
+[  926.965678] RSP: 0018:ffff8801892072f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
+[  926.965696] RAX: 1ffff1003b5c5b24 RBX: ffff8801dae2d900 RCX: ffffffff89170ec0
+[  926.965703] RDX: 0000000000040000 RSI: ffffffff83907258 RDI: ffff8801dae2d920
+[  926.965709] RBP: ffff880189207398 R08: 1ffffffff122e1d8 R09: ffffed003b5c4732
+[  926.965716] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffffffff895a1e00
+[  926.965722] R13: ffff880189207370 R14: dffffc0000000000 R15: ffffed0031240e66
+[  926.965757]  rcu_read_lock_sched_held+0x96/0x120
+[  926.965762]  vmx_handle_exit+0x1144/0x17f0
+[  926.965790]  vcpu_enter_guest+0x14a9/0x62e0
+[  926.965903]  kvm_arch_vcpu_ioctl_run+0x375/0x16e0
+[  926.965912]  kvm_vcpu_ioctl+0x72b/0x1150
+[  926.965971]  do_vfs_ioctl+0x1de/0x1720
+[  926.966014]  ksys_ioctl+0xa9/0xd0
+[  926.966019]  __x64_sys_ioctl+0x73/0xb0
+[  926.966023]  do_syscall_64+0x1b9/0x820
+[  926.966069]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  926.966073] RIP: 0033:0x457099
+[  926.966087] Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
+[  926.966092] RSP: 002b:00007faae8230c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[  926.966103] RAX: ffffffffffffffda RBX: 00007faae82316d4 RCX: 0000000000457099
+[  926.966109] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
+[  926.966116] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
+[  926.966122] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
+[  926.966129] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000
+[  926.976405] Kernel panic - not syncing: hung_task: blocked tasks
+[  927.811176] CPU: 1 PID: 984 Comm: khungtaskd Not tainted 4.19.0-rc2+ #6
+[  927.817935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  927.827293] Call Trace:
+[  927.829901]  dump_stack+0x1c4/0x2b4
+[  927.838828]  panic+0x238/0x4e7
+[  927.868112]  watchdog+0xb4f/0x1050
+[  927.937423]  kthread+0x35a/0x420
+[  927.949493]  ret_from_fork+0x3a/0x50
+[  927.953658] Dumping ftrace buffer:
+[  927.957370] ---------------------------------
diff --git a/pkg/report/testdata/linux/report/436 b/pkg/report/testdata/linux/report/436
new file mode 100644
index 000000000..28266a946
--- /dev/null
+++ b/pkg/report/testdata/linux/report/436
@@ -0,0 +1,135 @@
+TITLE: INFO: task hung in rtnl_lock
+TYPE: HANG
+
+[  768.680053][ T1064] INFO: task kworker/1:0:17 blocked for more than 143 seconds.
+[  768.687843][ T1064]       Not tainted 5.4.0-rc1+ #0
+[  768.693375][ T1064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  768.702359][ T1064] kworker/1:0     D26904    17      2 0x80004000
+[  768.708787][ T1064] Workqueue: ipv6_addrconf addrconf_verify_work
+[  768.720843][ T1064] Call Trace:
+[  768.724280][ T1064]  __schedule+0x94f/0x1e70
+[  768.745702][ T1064]  schedule+0xd9/0x260
+[  768.749775][ T1064]  schedule_preempt_disabled+0x13/0x20
+[  768.755621][ T1064]  __mutex_lock+0x7b0/0x13c0
+[  768.782873][ T1064]  mutex_lock_nested+0x16/0x20
+[  768.793027][ T1064]  rtnl_lock+0x17/0x20
+[  768.797104][ T1064]  addrconf_verify_work+0xe/0x20
+[  768.802453][ T1064]  process_one_work+0x9af/0x1740
+[  768.817861][ T1064]  worker_thread+0x98/0xe40
+[  768.822715][ T1064]  kthread+0x361/0x430
+[  768.838569][ T1064]  ret_from_fork+0x24/0x30
+[  768.843403][ T1064] 
+[  768.843403][ T1064] Showing all locks held in the system:
+[  768.851529][ T1064] 3 locks held by kworker/1:0/17:
+[  768.856814][ T1064]  #0: ffff8882160cc628 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x88b/0x1740
+[  768.868527][ T1064]  #1: ffff8880a9927dc0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8c1/0x1740
+[  768.878627][ T1064]  #2: ffffffff899981a0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  768.886970][ T1064] 1 lock held by khungtaskd/1064:
+[  768.892315][ T1064]  #0: ffffffff88faae00 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
+[  768.902038][ T1064] 1 lock held by rsyslogd/8660:
+[  768.906879][ T1064]  #0: ffff8880930cd620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
+[  768.915870][ T1064] 2 locks held by getty/8750:
+[  768.920854][ T1064]  #0: ffff8880a7acaf10 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  768.929807][ T1064]  #1: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  768.939777][ T1064] 2 locks held by getty/8751:
+[  768.944790][ T1064]  #0: ffff88808fa48bd0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  768.954074][ T1064]  #1: ffffc90005f4b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  768.963996][ T1064] 2 locks held by getty/8752:
+[  768.968667][ T1064]  #0: ffff88809189c250 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  768.978060][ T1064]  #1: ffffc90005f432e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  768.987963][ T1064] 2 locks held by getty/8753:
+[  768.993805][ T1064]  #0: ffff8880a7aca690 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  769.003151][ T1064]  #1: ffffc90005f312e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  769.013051][ T1064] 2 locks held by getty/8754:
+[  769.017719][ T1064]  #0: ffff88808fa49450 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  769.026997][ T1064]  #1: ffffc90005f472e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  769.036904][ T1064] 2 locks held by getty/8755:
+[  769.041878][ T1064]  #0: ffff8880a91673d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  769.051157][ T1064]  #1: ffffc90005f212e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  769.061025][ T1064] 2 locks held by getty/8756:
+[  769.065696][ T1064]  #0: ffff88809189d350 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  769.075286][ T1064]  #1: ffffc90005f192e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  769.085188][ T1064] 1 lock held by syz-executor687/8773:
+[  769.091899][ T1064] 
+[  769.094226][ T1064] =============================================
+[  769.094226][ T1064] 
+[  769.103001][ T1064] NMI backtrace for cpu 0
+[  769.107359][ T1064] CPU: 0 PID: 1064 Comm: khungtaskd Not tainted 5.4.0-rc1+ #0
+[  769.114807][ T1064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  769.124857][ T1064] Call Trace:
+[  769.128231][ T1064]  dump_stack+0x172/0x1f0
+[  769.132571][ T1064]  nmi_cpu_backtrace.cold+0x70/0xb2
+[  769.149653][ T1064]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[  769.155638][ T1064]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  769.161539][ T1064]  watchdog+0x9d0/0xef0
+[  769.165722][ T1064]  kthread+0x361/0x430
+[  769.181579][ T1064]  ret_from_fork+0x24/0x30
+[  769.186646][ T1064] Sending NMI from CPU 0 to CPUs 1:
+[  769.193421][    C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.372 msecs
+[  769.193895][ T1064] NMI backtrace for cpu 1
+[  769.193902][ T1064] CPU: 1 PID: 8773 Comm: syz-executor687 Not tainted 5.4.0-rc1+ #0
+[  769.193909][ T1064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  769.193913][ T1064] RIP: 0010:check_memory_region+0x1f/0x1a0
+[  769.193925][ T1064] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 0f 84 34 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 <41> 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00
+[  769.193929][ T1064] RSP: 0018:ffff88808665ed50 EFLAGS: 00000012
+[  769.193937][ T1064] RAX: ffff7fffffffffff RBX: ffff8880ae935ac0 RCX: ffffffff8160d054
+[  769.193943][ T1064] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880ae935ba0
+[  769.193948][ T1064] RBP: ffff88808665ed58 R08: ffff88808c458500 R09: ffffed1015d26b75
+[  769.193954][ T1064] R10: ffffed1015d26b74 R11: ffff8880ae935ba3 R12: ffff8880ae935ba0
+[  769.193959][ T1064] R13: 0000000000000000 R14: ffff88808c458500 R15: ffffffff85d66353
+[  769.193965][ T1064] FS:  0000000001cd3880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
+[  769.193970][ T1064] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[  769.193976][ T1064] CR2: 0000561e71f9b100 CR3: 00000000a43a3000 CR4: 00000000001406e0
+[  769.193981][ T1064] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[  769.193986][ T1064] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[  769.193989][ T1064] Call Trace:
+[  769.193993][ T1064]  __kasan_check_read+0x11/0x20
+[  769.193997][ T1064]  rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0
+[  769.194001][ T1064]  rcu_is_watching+0x10/0x30
+[  769.194005][ T1064]  is_bpf_text_address+0xe9/0x170
+[  769.194009][ T1064]  kernel_text_address+0x73/0xf0
+[  769.194012][ T1064]  __kernel_text_address+0xd/0x40
+[  769.194016][ T1064]  unwind_get_return_address+0x61/0xa0
+[  769.194024][ T1064]  arch_stack_walk+0x97/0xf0
+[  769.194028][ T1064]  stack_trace_save+0xac/0xe0
+[  769.194054][ T1064]  save_stack+0x23/0x90
+[  769.194179][ T1064]  __kasan_slab_free+0x102/0x150
+[  769.194186][ T1064]  kasan_slab_free+0xe/0x10
+[  769.194190][ T1064]  kmem_cache_free+0x86/0x320
+[  769.194193][ T1064]  kfree_skbmem+0xc5/0x150
+[  769.194197][ T1064]  kfree_skb+0x109/0x3c0
+[  769.194201][ T1064]  netlink_attachskb+0x253/0x7c0
+[  769.194216][ T1064]  netlink_unicast+0x1fc/0x710
+[  769.194228][ T1064]  rtnetlink_send+0xf0/0x110
+[  769.194231][ T1064]  tcf_action_add+0x243/0x370
+[  769.194247][ T1064]  tc_ctl_action+0x3b5/0x4bc
+[  769.194263][ T1064]  rtnetlink_rcv_msg+0x463/0xb00
+[  769.194283][ T1064]  netlink_rcv_skb+0x177/0x450
+[  769.194302][ T1064]  rtnetlink_rcv+0x1d/0x30
+[  769.194306][ T1064]  netlink_unicast+0x531/0x710
+[  769.194326][ T1064]  netlink_sendmsg+0x8a5/0xd60
+[  769.194355][ T1064]  sock_sendmsg+0xd7/0x130
+[  769.194358][ T1064]  ___sys_sendmsg+0x803/0x920
+[  769.194413][ T1064]  __sys_sendmsg+0x105/0x1d0
+[  769.194441][ T1064]  __x64_sys_sendmsg+0x78/0xb0
+[  769.194444][ T1064]  do_syscall_64+0xfa/0x760
+[  769.194449][ T1064]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  769.194452][ T1064] RIP: 0033:0x440939
+[  769.194463][ T1064] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
+[  769.194468][ T1064] RSP: 002b:00007ffc22a6bbd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
+[  769.194477][ T1064] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440939
+[  769.194483][ T1064] RDX: 0000000020000010 RSI: 0000000020001480 RDI: 0000000000000003
+[  769.194488][ T1064] RBP: 00000000006cb018 R08: 0000000000000002 R09: 00000000004002c8
+[  769.194494][ T1064] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004021c0
+[  769.194499][ T1064] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000
+[  769.201449][ T1064] Kernel panic - not syncing: hung_task: blocked tasks
+[  770.010696][ T1064] CPU: 0 PID: 1064 Comm: khungtaskd Not tainted 5.4.0-rc1+ #0
+[  770.018145][ T1064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  770.028194][ T1064] Call Trace:
+[  770.031491][ T1064]  dump_stack+0x172/0x1f0
+[  770.035823][ T1064]  panic+0x2dc/0x755
+[  770.079795][ T1064]  watchdog+0x9e1/0xef0
+[  770.083972][ T1064]  kthread+0x361/0x430
+[  770.099829][ T1064]  ret_from_fork+0x24/0x30
+[  770.105859][ T1064] Kernel Offset: disabled
+[  770.110640][ T1064] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/437 b/pkg/report/testdata/linux/report/437
new file mode 100644
index 000000000..f8dc64975
--- /dev/null
+++ b/pkg/report/testdata/linux/report/437
@@ -0,0 +1,145 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[ 1395.402634][ T1057] INFO: task kworker/u4:8:11933 blocked for more than 143 seconds.
+[ 1395.411524][ T1057]       Not tainted 5.3.0-rc7+ #0
+[ 1395.416767][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1395.425645][ T1057] kworker/u4:8    D24184 11933      2 0x80004000
+[ 1395.432175][ T1057] Workqueue: netns cleanup_net
+[ 1395.437402][ T1057] Call Trace:
+[ 1395.440815][ T1057]  __schedule+0x755/0x1580
+[ 1395.473457][ T1057]  schedule+0xd9/0x260
+[ 1395.477721][ T1057]  synchronize_rcu_expedited+0x544/0x5b0
+[ 1395.530730][ T1057]  synchronize_net+0x3b/0x60
+[ 1395.535651][ T1057]  nfnetlink_net_exit_batch+0x99/0x160
+[ 1395.546616][ T1057]  ops_exit_list.isra.0+0xfc/0x150
+[ 1395.551743][ T1057]  cleanup_net+0x4e2/0xa60
+[ 1395.571775][ T1057]  process_one_work+0x9af/0x1740
+[ 1395.587596][ T1057]  worker_thread+0x98/0xe40
+[ 1395.597533][ T1057]  kthread+0x361/0x430
+[ 1395.614136][ T1057]  ret_from_fork+0x24/0x30
+[ 1395.619168][ T1057] INFO: task syz-executor.2:4491 blocked for more than 143 seconds.
+[ 1395.627501][ T1057]       Not tainted 5.3.0-rc7+ #0
+[ 1395.632757][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1395.641543][ T1057] syz-executor.2  D29936  4491  20093 0x00000004
+[ 1395.648530][ T1057] Call Trace:
+[ 1395.652239][ T1057]  __schedule+0x755/0x1580
+[ 1395.672744][ T1057]  schedule+0xd9/0x260
+[ 1395.677073][ T1057]  rwsem_down_write_slowpath+0x708/0xf60
+[ 1395.709619][ T1057]  down_write+0x13c/0x150
+[ 1395.728470][ T1057]  register_netdevice_notifier+0x7e/0x630
+[ 1395.755382][ T1057]  raw_init+0x299/0x340
+[ 1395.766053][ T1057]  can_create+0x288/0x4b0
+[ 1395.770420][ T1057]  __sock_create+0x3d8/0x730
+[ 1395.775082][ T1057]  __sys_socket+0x103/0x220
+[ 1395.797158][ T1057]  __x64_sys_socket+0x73/0xb0
+[ 1395.801942][ T1057]  do_syscall_64+0xfd/0x6a0
+[ 1395.806514][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1395.812723][ T1057] RIP: 0033:0x459879
+[ 1395.816620][ T1057] Code: 30 48 c7 44 24 38 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 e8 b0 67 ff ff 48 8b 44 24 50 48 8b 4c 24 <58> 48 89 01 48 8b 6c 24 60 48 83 c4 68 c3 e8 14 06 fd ff 0f 0b e8
+[ 1395.836916][ T1057] RSP: 002b:00007fda59837c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
+[ 1395.845503][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
+[ 1395.853690][ T1057] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d
+[ 1395.862157][ T1057] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1395.870861][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fda598386d4
+[ 1395.878994][ T1057] R13: 00000000004c84da R14: 00000000004df0b8 R15: 00000000ffffffff
+[ 1395.887376][ T1057] INFO: task syz-executor.2:4493 blocked for more than 143 seconds.
+[ 1395.895490][ T1057]       Not tainted 5.3.0-rc7+ #0
+[ 1395.900676][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1395.909494][ T1057] syz-executor.2  D26744  4493  20093 0x00000004
+[ 1395.915958][ T1057] Call Trace:
+[ 1395.919334][ T1057]  __schedule+0x755/0x1580
+[ 1395.934366][ T1057]  schedule+0xd9/0x260
+[ 1395.938459][ T1057]  rwsem_down_write_slowpath+0x708/0xf60
+[ 1395.976573][ T1057]  down_write+0x13c/0x150
+[ 1395.995440][ T1057]  register_netdevice_notifier+0x7e/0x630
+[ 1396.022813][ T1057]  raw_init+0x299/0x340
+[ 1396.032178][ T1057]  can_create+0x288/0x4b0
+[ 1396.036675][ T1057]  __sock_create+0x3d8/0x730
+[ 1396.041419][ T1057]  __sys_socket+0x103/0x220
+[ 1396.063195][ T1057]  __x64_sys_socket+0x73/0xb0
+[ 1396.068295][ T1057]  do_syscall_64+0xfd/0x6a0
+[ 1396.072850][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1396.078830][ T1057] RIP: 0033:0x459879
+[ 1396.082765][ T1057] Code: 30 48 c7 44 24 38 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 e8 b0 67 ff ff 48 8b 44 24 50 48 8b 4c 24 <58> 48 89 01 48 8b 6c 24 60 48 83 c4 68 c3 e8 14 06 fd ff 0f 0b e8
+[ 1396.102510][ T1057] RSP: 002b:00007fda59816c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
+[ 1396.110999][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
+[ 1396.119141][ T1057] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d
+[ 1396.127453][ T1057] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
+[ 1396.135706][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fda598176d4
+[ 1396.143810][ T1057] R13: 00000000004c84da R14: 00000000004df0b8 R15: 00000000ffffffff
+[ 1396.151804][ T1057] INFO: task syz-executor.1:4513 blocked for more than 144 seconds.
+[ 1396.159830][ T1057]       Not tainted 5.3.0-rc7+ #0
+[ 1396.165025][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1396.173740][ T1057] syz-executor.1  D29936  4513  13608 0x00000004
+[ 1396.180179][ T1057] Call Trace:
+[ 1396.183899][ T1057]  __schedule+0x755/0x1580
+[ 1396.199244][ T1057]  schedule+0xd9/0x260
+[ 1396.203389][ T1057]  rwsem_down_write_slowpath+0x708/0xf60
+[ 1396.247991][ T1057]  down_write+0x13c/0x150
+[ 1396.266462][ T1057]  register_netdevice_notifier+0x7e/0x630
+[ 1396.293014][ T1057]  raw_init+0x299/0x340
+[ 1396.302178][ T1057]  can_create+0x288/0x4b0
+[ 1396.306730][ T1057]  __sock_create+0x3d8/0x730
+[ 1396.311502][ T1057]  __sys_socket+0x103/0x220
+[ 1396.333436][ T1057]  __x64_sys_socket+0x73/0xb0
+[ 1396.338209][ T1057]  do_syscall_64+0xfd/0x6a0
+[ 1396.343167][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1396.349364][ T1057] RIP: 0033:0x459879
+[ 1396.353528][ T1057] Code: 30 48 c7 44 24 38 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 e8 b0 67 ff ff 48 8b 44 24 50 48 8b 4c 24 <58> 48 89 01 48 8b 6c 24 60 48 83 c4 68 c3 e8 14 06 fd ff 0f 0b e8
+[ 1396.373237][ T1057] RSP: 002b:00007fec8f6d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
+[ 1396.381651][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
+[ 1396.389875][ T1057] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d
+[ 1396.397913][ T1057] RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
+[ 1396.406040][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fec8f6d16d4
+[ 1396.414069][ T1057] R13: 00000000004c84da R14: 00000000004df0b8 R15: 00000000ffffffff
+[ 1396.422170][ T1057] INFO: task syz-executor.1:4514 blocked for more than 144 seconds.
+[ 1396.430286][ T1057]       Not tainted 5.3.0-rc7+ #0
+[ 1396.435343][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1396.444340][ T1057] syz-executor.1  D29936  4514  13608 0x00000004
+[ 1396.450778][ T1057] Call Trace:
+[ 1396.454232][ T1057]  __schedule+0x755/0x1580
+[ 1396.469167][ T1057]  schedule+0xd9/0x260
+[ 1396.473293][ T1057]  rwsem_down_write_slowpath+0x708/0xf60
+[ 1396.512187][ T1057]  down_write+0x13c/0x150
+[ 1396.531255][ T1057]  register_netdevice_notifier+0x7e/0x630
+[ 1396.558298][ T1057]  raw_init+0x299/0x340
+[ 1396.567558][ T1057]  can_create+0x288/0x4b0
+[ 1396.572098][ T1057]  __sock_create+0x3d8/0x730
+[ 1396.576879][ T1057]  __sys_socket+0x103/0x220
+[ 1396.599008][ T1057]  __x64_sys_socket+0x73/0xb0
+[ 1396.603803][ T1057]  do_syscall_64+0xfd/0x6a0
+[ 1396.608316][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1396.614560][ T1057] RIP: 0033:0x459879
+[ 1396.618584][ T1057] Code: 30 48 c7 44 24 38 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 e8 b0 67 ff ff 48 8b 44 24 50 48 8b 4c 24 <58> 48 89 01 48 8b 6c 24 60 48 83 c4 68 c3 e8 14 06 fd ff 0f 0b e8
+[ 1396.638423][ T1057] RSP: 002b:00007fec8f6afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
+[ 1396.646900][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
+[ 1396.654993][ T1057] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d
+[ 1396.663129][ T1057] RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
+[ 1396.671130][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fec8f6b06d4
+[ 1396.679200][ T1057] R13: 00000000004c84da R14: 00000000004df0b8 R15: 00000000ffffffff
+[ 1396.687935][ T1057] INFO: lockdep is turned off.
+[ 1396.692811][ T1057] NMI backtrace for cpu 1
+[ 1396.697146][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0
+[ 1396.704587][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1396.714644][ T1057] Call Trace:
+[ 1396.717928][ T1057]  dump_stack+0x172/0x1f0
+[ 1396.722246][ T1057]  nmi_cpu_backtrace.cold+0x70/0xb2
+[ 1396.739776][ T1057]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[ 1396.746026][ T1057]  arch_trigger_cpumask_backtrace+0x14/0x20
+[ 1396.752100][ T1057]  watchdog+0x9d0/0xef0
+[ 1396.756487][ T1057]  kthread+0x361/0x430
+[ 1396.772903][ T1057]  ret_from_fork+0x24/0x30
+[ 1396.777470][ T1057] Sending NMI from CPU 1 to CPUs 0:
+[ 1396.782873][    C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10
+[ 1396.783842][ T1057] Kernel panic - not syncing: hung_task: blocked tasks
+[ 1396.798359][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0
+[ 1396.807556][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1396.817600][ T1057] Call Trace:
+[ 1396.820881][ T1057]  dump_stack+0x172/0x1f0
+[ 1396.825340][ T1057]  panic+0x2dc/0x755
+[ 1396.864234][ T1057]  watchdog+0x9e1/0xef0
+[ 1396.868574][ T1057]  kthread+0x361/0x430
+[ 1396.885002][ T1057]  ret_from_fork+0x24/0x30
+[ 1396.891743][ T1057] Kernel Offset: disabled
+[ 1396.896261][ T1057] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/438 b/pkg/report/testdata/linux/report/438
new file mode 100644
index 000000000..b231cda8a
--- /dev/null
+++ b/pkg/report/testdata/linux/report/438
@@ -0,0 +1,158 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  327.308891][ T1057] INFO: task kworker/u4:6:10032 blocked for more than 143 seconds.
+[  327.316819][ T1057]       Not tainted 5.3.0-rc7+ #0
+[  327.323293][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  327.332025][ T1057] kworker/u4:6    D28320 10032      2 0x80004000
+[  327.338470][ T1057] Workqueue: netns cleanup_net
+[  327.344651][ T1057] Call Trace:
+[  327.347971][ T1057]  __schedule+0x755/0x1580
+[  327.381093][ T1057]  schedule+0xd9/0x260
+[  327.385145][ T1057]  synchronize_rcu_expedited+0x544/0x5b0
+[  327.438039][ T1057]  synchronize_net+0x3b/0x60
+[  327.443898][ T1057]  rollback_registered_many+0x57a/0xdd0
+[  327.471473][ T1057]  unregister_netdevice_many.part.0+0x1b/0x1f0
+[  327.477614][ T1057]  unregister_netdevice_many+0x3b/0x50
+[  327.484383][ T1057]  sit_exit_batch_net+0x560/0x750
+[  327.500919][ T1057]  ops_exit_list.isra.0+0xfc/0x150
+[  327.506012][ T1057]  cleanup_net+0x4e2/0xa60
+[  327.526161][ T1057]  process_one_work+0x9af/0x1740
+[  327.542653][ T1057]  worker_thread+0x98/0xe40
+[  327.547143][ T1057]  kthread+0x361/0x430
+[  327.564072][ T1057]  ret_from_fork+0x24/0x30
+[  327.568484][ T1057] INFO: task syz-executor.5:10905 blocked for more than 143 seconds.
+[  327.576610][ T1057]       Not tainted 5.3.0-rc7+ #0
+[  327.581660][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  327.590335][ T1057] syz-executor.5  D27056 10905   9789 0x20020004
+[  327.596659][ T1057] Call Trace:
+[  327.599954][ T1057]  __schedule+0x755/0x1580
+[  327.623759][ T1057]  schedule+0xd9/0x260
+[  327.627802][ T1057]  schedule_preempt_disabled+0x13/0x20
+[  327.633293][ T1057]  __mutex_lock+0x7b0/0x13c0
+[  327.681906][ T1057]  mutex_lock_nested+0x16/0x20
+[  327.691727][ T1057]  rtnl_lock+0x17/0x20
+[  327.695823][ T1057]  addrconf_set_dstaddr+0xa4/0x460
+[  327.737643][ T1057]  inet6_ioctl+0x161/0x1c0
+[  327.742119][ T1057]  sock_do_ioctl+0xd8/0x2f0
+[  327.761628][ T1057]  compat_sock_ioctl+0x15f9/0x2240
+[  327.802508][ T1057]  __ia32_compat_sys_ioctl+0x195/0x620
+[  327.807954][ T1057]  do_fast_syscall_32+0x27b/0xdb3
+[  327.813008][ T1057]  entry_SYSENTER_compat+0x70/0x7f
+[  327.818105][ T1057] RIP: 0023:0xf7ffca29
+[  327.822187][ T1057] Code: Bad RIP value.
+[  327.826239][ T1057] RSP: 002b:00000000f5df80cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
+[  327.834670][ T1057] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000008918
+[  327.842646][ T1057] RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000
+[  327.850705][ T1057] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
+[  327.858663][ T1057] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
+[  327.866652][ T1057] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[  327.874666][ T1057] INFO: task syz-executor.5:10909 blocked for more than 143 seconds.
+[  327.882742][ T1057]       Not tainted 5.3.0-rc7+ #0
+[  327.887745][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  327.896424][ T1057] syz-executor.5  D26880 10909   9789 0x20020004
+[  327.902884][ T1057] Call Trace:
+[  327.906169][ T1057]  __schedule+0x755/0x1580
+[  327.930312][ T1057]  schedule+0xd9/0x260
+[  327.934367][ T1057]  schedule_preempt_disabled+0x13/0x20
+[  327.939980][ T1057]  __mutex_lock+0x7b0/0x13c0
+[  328.005917][ T1057]  mutex_lock_nested+0x16/0x20
+[  328.015610][ T1057]  rtnl_lock+0x17/0x20
+[  328.019715][ T1057]  addrconf_set_dstaddr+0xa4/0x460
+[  328.073485][ T1057]  inet6_ioctl+0x161/0x1c0
+[  328.077905][ T1057]  sock_do_ioctl+0xd8/0x2f0
+[  328.097440][ T1057]  compat_sock_ioctl+0x15f9/0x2240
+[  328.138022][ T1057]  __ia32_compat_sys_ioctl+0x195/0x620
+[  328.143493][ T1057]  do_fast_syscall_32+0x27b/0xdb3
+[  328.148529][ T1057]  entry_SYSENTER_compat+0x70/0x7f
+[  328.153657][ T1057] RIP: 0023:0xf7ffca29
+[  328.157718][ T1057] Code: Bad RIP value.
+[  328.161786][ T1057] RSP: 002b:00000000f5dd70cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
+[  328.170211][ T1057] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000008918
+[  328.178160][ T1057] RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000
+[  328.186136][ T1057] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
+[  328.194472][ T1057] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
+[  328.202461][ T1057] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[  328.210448][ T1057] INFO: task syz-executor.2:10916 blocked for more than 144 seconds.
+[  328.219830][ T1057]       Not tainted 5.3.0-rc7+ #0
+[  328.224833][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  328.233508][ T1057] syz-executor.2  D28616 10916   9778 0x20020004
+[  328.239866][ T1057] Call Trace:
+[  328.243153][ T1057]  __schedule+0x755/0x1580
+[  328.266958][ T1057]  schedule+0xd9/0x260
+[  328.271090][ T1057]  schedule_preempt_disabled+0x13/0x20
+[  328.276537][ T1057]  __mutex_lock+0x7b0/0x13c0
+[  328.318172][ T1057]  mutex_lock_nested+0x16/0x20
+[  328.328120][ T1057]  rtnetlink_rcv_msg+0x40a/0xb00
+[  328.349062][ T1057]  netlink_rcv_skb+0x177/0x450
+[  328.369167][ T1057]  rtnetlink_rcv+0x1d/0x30
+[  328.373580][ T1057]  netlink_unicast+0x531/0x710
+[  328.399827][ T1057]  netlink_sendmsg+0x8a5/0xd60
+[  328.437231][ T1057]  sock_sendmsg+0xd7/0x130
+[  328.441656][ T1057]  ___sys_sendmsg+0x803/0x920
+[  328.484390][ T1057]  __sys_sendmsg+0x105/0x1d0
+[  328.511110][ T1057]  __ia32_compat_sys_sendmsg+0x7a/0xb0
+[  328.516564][ T1057]  do_fast_syscall_32+0x27b/0xdb3
+[  328.521601][ T1057]  entry_SYSENTER_compat+0x70/0x7f
+[  328.526701][ T1057] RIP: 0023:0xf7fe1a29
+[  328.530817][ T1057] Code: Bad RIP value.
+[  328.534879][ T1057] RSP: 002b:00000000f5ddd0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
+[  328.543312][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000080
+[  328.551284][ T1057] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
+[  328.559276][ T1057] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
+[  328.567238][ T1057] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
+[  328.575389][ T1057] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[  328.583566][ T1057] INFO: task syz-executor.2:10958 blocked for more than 144 seconds.
+[  328.591653][ T1057]       Not tainted 5.3.0-rc7+ #0
+[  328.596680][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  328.605352][ T1057] syz-executor.2  D28792 10958   9778 0x20020004
+[  328.611705][ T1057] Call Trace:
+[  328.614988][ T1057]  __schedule+0x755/0x1580
+[  328.638853][ T1057]  schedule+0xd9/0x260
+[  328.642913][ T1057]  schedule_preempt_disabled+0x13/0x20
+[  328.648343][ T1057]  __mutex_lock+0x7b0/0x13c0
+[  328.689967][ T1057]  mutex_lock_nested+0x16/0x20
+[  328.699684][ T1057]  rtnetlink_rcv_msg+0x40a/0xb00
+[  328.720799][ T1057]  netlink_rcv_skb+0x177/0x450
+[  328.740895][ T1057]  rtnetlink_rcv+0x1d/0x30
+[  328.745298][ T1057]  netlink_unicast+0x531/0x710
+[  328.771547][ T1057]  netlink_sendmsg+0x8a5/0xd60
+[  328.808925][ T1057]  sock_sendmsg+0xd7/0x130
+[  328.813327][ T1057]  ___sys_sendmsg+0x803/0x920
+[  328.856528][ T1057]  __sys_sendmsg+0x105/0x1d0
+[  328.883164][ T1057]  __ia32_compat_sys_sendmsg+0x7a/0xb0
+[  328.888614][ T1057]  do_fast_syscall_32+0x27b/0xdb3
+[  328.893644][ T1057]  entry_SYSENTER_compat+0x70/0x7f
+[  328.898772][ T1057] RIP: 0023:0xf7fe1a29
+[  328.902831][ T1057] Code: Bad RIP value.
+[  328.906869][ T1057] RSP: 002b:00000000f5d9b0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
+[  328.915297][ T1057] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000080
+[  328.923281][ T1057] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
+[  328.931260][ T1057] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
+[  328.939231][ T1057] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
+[  328.947177][ T1057] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[  328.955169][ T1057] INFO: lockdep is turned off.
+[  328.959927][ T1057] NMI backtrace for cpu 0
+[  328.964229][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0
+[  328.971653][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  328.981679][ T1057] Call Trace:
+[  328.984986][ T1057]  dump_stack+0x172/0x1f0
+[  328.989293][ T1057]  nmi_cpu_backtrace.cold+0x70/0xb2
+[  329.006306][ T1057]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[  329.012258][ T1057]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  329.018122][ T1057]  watchdog+0x9d0/0xef0
+[  329.022255][ T1057]  kthread+0x361/0x430
+[  329.038033][ T1057]  ret_from_fork+0x24/0x30
+[  329.042527][ T1057] Sending NMI from CPU 0 to CPUs 1:
+[  329.047750][    C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10
+[  329.049048][ T1057] Kernel panic - not syncing: hung_task: blocked tasks
+[  329.062806][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0
+[  329.070228][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  329.080253][ T1057] Call Trace:
+[  329.083516][ T1057]  dump_stack+0x172/0x1f0
+[  329.087818][ T1057]  panic+0x2dc/0x755
+[  329.131539][ T1057]  watchdog+0x9e1/0xef0
+[  329.135680][ T1057]  kthread+0x361/0x430
+[  329.151481][ T1057]  ret_from_fork+0x24/0x30
+[  329.157111][ T1057] Kernel Offset: disabled
+[  329.161441][ T1057] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/439 b/pkg/report/testdata/linux/report/439
new file mode 100644
index 000000000..5e41b6339
--- /dev/null
+++ b/pkg/report/testdata/linux/report/439
@@ -0,0 +1,79 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  348.321211][ T1056] INFO: task syz-executor.2:9976 blocked for more than 143 seconds.
+[  348.329682][ T1056]       Not tainted 5.3.0-rc6+ #147
+[  348.335482][ T1056] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  348.344623][ T1056] syz-executor.2  D25560  9976   9905 0x00004004
+[  348.351333][ T1056] Call Trace:
+[  348.354916][ T1056]  __schedule+0x755/0x1580
+[  348.375394][ T1056]  schedule+0xd9/0x260
+[  348.379651][ T1056]  synchronize_rcu_expedited+0x544/0x5b0
+[  348.451454][ T1056]  bdi_unregister+0x167/0x5b0
+[  348.478128][ T1056]  bdi_put+0x15e/0x190
+[  348.482313][ T1056]  generic_shutdown_super+0x2b0/0x370
+[  348.488024][ T1056]  kill_anon_super+0x3e/0x60
+[  348.493072][ T1056]  fuse_kill_sb_anon+0x1e/0x30
+[  348.498539][ T1056]  deactivate_locked_super+0x95/0x100
+[  348.504260][ T1056]  deactivate_super+0x1b2/0x1d0
+[  348.536682][ T1056]  cleanup_mnt+0x351/0x4b0
+[  348.551705][ T1056]  __cleanup_mnt+0x16/0x20
+[  348.556288][ T1056]  task_work_run+0x145/0x1c0
+[  348.561245][ T1056]  exit_to_usermode_loop+0x316/0x380
+[  348.566831][ T1056]  do_syscall_64+0x5a9/0x6a0
+[  348.571653][ T1056]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  348.577798][ T1056] RIP: 0033:0x459879
+[  348.581822][ T1056] Code: 30 48 c7 44 24 38 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 e8 b0 67 ff ff 48 8b 44 24 50 48 8b 4c 24 <58> 48 89 01 48 8b 6c 24 60 48 83 c4 68 c3 e8 14 06 fd ff 0f 0b e8
+[  348.603860][ T1056] RSP: 002b:00007f55778a4c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
+[  348.613007][ T1056] RAX: ffffffffffffffea RBX: 0000000000000005 RCX: 0000000000459879
+[  348.621416][ T1056] RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000
+[  348.629760][ T1056] RBP: 000000000075bf20 R08: 00000000200001c0 R09: 0000000000000000
+[  348.651558][ T1056] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55778a56d4
+[  348.659855][ T1056] R13: 00000000004c5e8b R14: 00000000004da9d8 R15: 00000000ffffffff
+[  348.684479][ T1056] INFO: lockdep is turned off.
+[  348.700316][ T1056] NMI backtrace for cpu 0
+[  348.705322][ T1056] CPU: 0 PID: 1056 Comm: khungtaskd Not tainted 5.3.0-rc6+ #147
+[  348.713316][ T1056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  348.723474][ T1056] Call Trace:
+[  348.726838][ T1056]  dump_stack+0x172/0x1f0
+[  348.731515][ T1056]  nmi_cpu_backtrace.cold+0x70/0xb2
+[  348.749826][ T1056]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[  348.755943][ T1056]  arch_trigger_cpumask_backtrace+0x14/0x20
+[  348.762479][ T1056]  watchdog+0x9d0/0xef0
+[  348.766832][ T1056]  kthread+0x361/0x430
+[  348.785271][ T1056]  ret_from_fork+0x24/0x30
+[  348.789848][ T1056] Sending NMI from CPU 0 to CPUs 1:
+[  348.795419][    C1] NMI backtrace for cpu 1
+[  348.795428][    C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc6+ #147
+[  348.795432][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  348.795434][    C1] RIP: 0010:reschedule_interrupt+0x0/0x20
+[  348.795445][    C1] Code: 66 2e 0f 1f 84 00 00 00 00 00 68 03 ff ff ff e8 b6 f0 ff ff e8 c1 23 00 00 e9 ab f1 ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 <68> 02 ff ff ff e8 96 f0 ff ff e8 e1 1e 00 00 e9 8b f1 ff ff 66 90
+[  348.795448][    C1] RSP: 0018:ffff8880a98dfd38 EFLAGS: 00000086
+[  348.795453][    C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5de
+[  348.795457][    C1] RDX: dffffc0000000000 RSI: ffffffff8177f03e RDI: ffffffff873db36c
+[  348.795460][    C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69
+[  348.795463][    C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000
+[  348.795466][    C1] R13: ffffffff89a57cf8 R14: 0000000000000000 R15: 0000000000000001
+[  348.795470][    C1] FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
+[  348.795473][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[  348.795476][    C1] CR2: ffffffffff600400 CR3: 0000000090e40000 CR4: 00000000001406e0
+[  348.795480][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[  348.795483][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[  348.795485][    C1] Call Trace:
+[  348.795491][    C1]  arch_cpu_idle+0xa/0x10
+[  348.795493][    C1]  default_idle_call+0x84/0xb0
+[  348.795495][    C1]  do_idle+0x413/0x760
+[  348.795500][    C1]  cpu_startup_entry+0x1b/0x20
+[  348.795502][    C1]  start_secondary+0x315/0x430
+[  348.795507][    C1]  secondary_startup_64+0xa4/0xb0
+[  348.796672][ T1056] Kernel panic - not syncing: hung_task: blocked tasks
+[  348.989545][ T1056] CPU: 0 PID: 1056 Comm: khungtaskd Not tainted 5.3.0-rc6+ #147
+[  348.997469][ T1056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  349.007812][ T1056] Call Trace:
+[  349.011195][ T1056]  dump_stack+0x172/0x1f0
+[  349.015522][ T1056]  panic+0x2dc/0x755
+[  349.062252][ T1056]  watchdog+0x9e1/0xef0
+[  349.066642][ T1056]  kthread+0x361/0x430
+[  349.082864][ T1056]  ret_from_fork+0x24/0x30
+[  349.088901][ T1056] Kernel Offset: disabled
+[  349.093412][ T1056] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/440 b/pkg/report/testdata/linux/report/440
new file mode 100644
index 000000000..de3bdef8e
--- /dev/null
+++ b/pkg/report/testdata/linux/report/440
@@ -0,0 +1,263 @@
+TITLE: INFO: task hung in rtnl_lock
+TYPE: HANG
+
+[ 1120.085107][ T1053] INFO: task kworker/u4:2:24 blocked for more than 143 seconds.
+[ 1120.093002][ T1053]       Not tainted 5.2.0+ #97
+[ 1120.102117][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1120.110940][ T1053] kworker/u4:2    D24184    24      2 0x80004000
+[ 1120.121587][ T1053] Workqueue: netns cleanup_net
+[ 1120.126453][ T1053] Call Trace:
+[ 1120.130034][ T1053]  __schedule+0x755/0x1580
+[ 1120.170056][ T1053]  schedule+0xa8/0x270
+[ 1120.174233][ T1053]  schedule_preempt_disabled+0x13/0x20
+[ 1120.180500][ T1053]  __mutex_lock+0x751/0x1340
+[ 1120.224170][ T1053]  mutex_lock_nested+0x16/0x20
+[ 1120.234485][ T1053]  rtnl_lock+0x17/0x20
+[ 1120.238686][ T1053]  tipc_net_stop+0x2fa/0x320
+[ 1120.243359][ T1053]  tipc_exit_net+0x16/0x40
+[ 1120.253662][ T1053]  ops_exit_list.isra.0+0xaa/0x150
+[ 1120.258920][ T1053]  cleanup_net+0x4e2/0xa70
+[ 1120.268343][ T1053]  process_one_work+0x9af/0x1740
+[ 1120.283447][ T1053]  worker_thread+0x98/0xe40
+[ 1120.288051][ T1053]  kthread+0x361/0x430
+[ 1120.304089][ T1053]  ret_from_fork+0x24/0x30
+[ 1120.309062][ T1053] INFO: task syz-executor.2:13855 blocked for more than 143 seconds.
+[ 1120.317268][ T1053]       Not tainted 5.2.0+ #97
+[ 1120.322070][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1120.331044][ T1053] syz-executor.2  D24320 13855      1 0x80004002
+[ 1120.337543][ T1053] Call Trace:
+[ 1120.340927][ T1053]  __schedule+0x755/0x1580
+[ 1120.361374][ T1053]  schedule+0xa8/0x270
+[ 1120.365543][ T1053]  schedule_preempt_disabled+0x13/0x20
+[ 1120.371017][ T1053]  __mutex_lock+0x751/0x1340
+[ 1120.412279][ T1053]  mutex_lock_nested+0x16/0x20
+[ 1120.422158][ T1053]  rtnl_lock+0x17/0x20
+[ 1120.426487][ T1053]  netdev_run_todo+0x4d4/0x7b0
+[ 1120.436193][ T1053]  rtnl_unlock+0xe/0x10
+[ 1120.440454][ T1053]  tun_chr_close+0xfc/0x180
+[ 1120.445073][ T1053]  __fput+0x2ff/0x890
+[ 1120.453965][ T1053]  ____fput+0x16/0x20
+[ 1120.458034][ T1053]  task_work_run+0x145/0x1c0
+[ 1120.462642][ T1053]  do_exit+0x92f/0x2ea0
+[ 1120.490480][ T1053]  do_group_exit+0x135/0x360
+[ 1120.495214][ T1053]  __x64_sys_exit_group+0x44/0x50
+[ 1120.500250][ T1053]  do_syscall_64+0xfd/0x6a0
+[ 1120.504842][ T1053]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1120.510747][ T1053] RIP: 0033:0x459829
+[ 1120.514963][ T1053] Code: Bad RIP value.
+[ 1120.519043][ T1053] RSP: 002b:00007ffec7957b18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
+[ 1120.527533][ T1053] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 0000000000459829
+[ 1120.535607][ T1053] RDX: 0000000000413430 RSI: 0000000000a74ef0 RDI: 0000000000000043
+[ 1120.543831][ T1053] RBP: 00000000004bf017 R08: 000000000000000c R09: 00000000000ee31c
+[ 1120.552245][ T1053] R10: 0000555556a08940 R11: 0000000000000246 R12: 00000000ffffffff
+[ 1120.560408][ T1053] R13: 00007ffec7957c60 R14: 00000000000ee2c8 R15: 00007ffec7957c70
+[ 1120.569058][ T1053] INFO: task syz-executor.1:1147 blocked for more than 143 seconds.
+[ 1120.577252][ T1053]       Not tainted 5.2.0+ #97
+[ 1120.582017][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1120.590772][ T1053] syz-executor.1  D24320  1147      1 0x80004002
+[ 1120.597406][ T1053] Call Trace:
+[ 1120.600955][ T1053]  __schedule+0x755/0x1580
+[ 1120.617076][ T1053]  schedule+0xa8/0x270
+[ 1120.630073][ T1053]  synchronize_rcu_expedited+0x544/0x5b0
+[ 1120.668515][ T1053]  synchronize_net+0x3b/0x60
+[ 1120.673152][ T1053]  __tun_detach+0x3f5/0x1040
+[ 1120.677975][ T1053]  tun_chr_close+0xe0/0x180
+[ 1120.682584][ T1053]  __fput+0x2ff/0x890
+[ 1120.691650][ T1053]  ____fput+0x16/0x20
+[ 1120.695830][ T1053]  task_work_run+0x145/0x1c0
+[ 1120.700433][ T1053]  do_exit+0x92f/0x2ea0
+[ 1120.727096][ T1053]  do_group_exit+0x135/0x360
+[ 1120.731722][ T1053]  __x64_sys_exit_group+0x44/0x50
+[ 1120.737731][ T1053]  do_syscall_64+0xfd/0x6a0
+[ 1120.742258][ T1053]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1120.748237][ T1053] RIP: 0033:0x459829
+[ 1120.752364][ T1053] Code: Bad RIP value.
+[ 1120.756695][ T1053] RSP: 002b:00007ffe8bbd9168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
+[ 1120.765171][ T1053] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 0000000000459829
+[ 1120.773206][ T1053] RDX: 0000000000413430 RSI: 0000000000a74ef0 RDI: 0000000000000043
+[ 1120.781277][ T1053] RBP: 00000000004bf017 R08: 000000000000000c R09: 00000000000ee31c
+[ 1120.789636][ T1053] R10: 000055555611b940 R11: 0000000000000246 R12: 00000000ffffffff
+[ 1120.797915][ T1053] R13: 00007ffe8bbd92b0 R14: 00000000000ee2c9 R15: 00007ffe8bbd92c0
+[ 1120.806471][ T1053] INFO: task syz-executor.0:20090 blocked for more than 144 seconds.
+[ 1120.814915][ T1053]       Not tainted 5.2.0+ #97
+[ 1120.819839][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1120.828725][ T1053] syz-executor.0  D28704 20090   3752 0x00000004
+[ 1120.835591][ T1053] Call Trace:
+[ 1120.838889][ T1053]  __schedule+0x755/0x1580
+[ 1120.858442][ T1053]  schedule+0xa8/0x270
+[ 1120.862804][ T1053]  schedule_preempt_disabled+0x13/0x20
+[ 1120.869342][ T1053]  __mutex_lock+0x751/0x1340
+[ 1120.893763][ T1053]  mutex_lock_nested+0x16/0x20
+[ 1120.903735][ T1053]  rtnl_lock+0x17/0x20
+[ 1120.907884][ T1053]  sock_do_ioctl+0x24e/0x2f0
+[ 1120.935885][ T1053]  sock_ioctl+0x3ed/0x790
+[ 1120.950129][ T1053]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1120.990191][ T1053]  ksys_ioctl+0xab/0xd0
+[ 1120.994350][ T1053]  __x64_sys_ioctl+0x73/0xb0
+[ 1120.999952][ T1053]  do_syscall_64+0xfd/0x6a0
+[ 1121.004620][ T1053]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1121.010762][ T1053] RIP: 0033:0x459829
+[ 1121.014671][ T1053] Code: Bad RIP value.
+[ 1121.018914][ T1053] RSP: 002b:00007f2c31d90c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1121.027467][ T1053] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
+[ 1121.035550][ T1053] RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000003
+[ 1121.043641][ T1053] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1121.052106][ T1053] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2c31d916d4
+[ 1121.060732][ T1053] R13: 00000000004c0c29 R14: 00000000004d3c20 R15: 00000000ffffffff
+[ 1121.068958][ T1053] INFO: task syz-executor.3:20104 blocked for more than 144 seconds.
+[ 1121.077735][ T1053]       Not tainted 5.2.0+ #97
+[ 1121.082505][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1121.091466][ T1053] syz-executor.3  D27584 20104  16534 0x00000004
+[ 1121.097905][ T1053] Call Trace:
+[ 1121.101206][ T1053]  __schedule+0x755/0x1580
+[ 1121.120501][ T1053]  schedule+0xa8/0x270
+[ 1121.124555][ T1053]  schedule_preempt_disabled+0x13/0x20
+[ 1121.130729][ T1053]  __mutex_lock+0x751/0x1340
+[ 1121.155952][ T1053]  mutex_lock_nested+0x16/0x20
+[ 1121.165937][ T1053]  rtnl_lock+0x17/0x20
+[ 1121.170033][ T1053]  sock_do_ioctl+0x24e/0x2f0
+[ 1121.198473][ T1053]  sock_ioctl+0x3ed/0x790
+[ 1121.212601][ T1053]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1121.253005][ T1053]  ksys_ioctl+0xab/0xd0
+[ 1121.257936][ T1053]  __x64_sys_ioctl+0x73/0xb0
+[ 1121.262544][ T1053]  do_syscall_64+0xfd/0x6a0
+[ 1121.267254][ T1053]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1121.273459][ T1053] RIP: 0033:0x459829
+[ 1121.277856][ T1053] Code: Bad RIP value.
+[ 1121.282065][ T1053] RSP: 002b:00007f315200cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1121.290751][ T1053] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
+[ 1121.298888][ T1053] RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000004
+[ 1121.307183][ T1053] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1121.315337][ T1053] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f315200d6d4
+[ 1121.323882][ T1053] R13: 00000000004c0c29 R14: 00000000004d3c20 R15: 00000000ffffffff
+[ 1121.332167][ T1053] INFO: task syz-executor.5:20132 blocked for more than 144 seconds.
+[ 1121.340296][ T1053]       Not tainted 5.2.0+ #97
+[ 1121.345254][ T1053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 1121.353945][ T1053] syz-executor.5  D29712 20132  12006 0x00000004
+[ 1121.360401][ T1053] Call Trace:
+[ 1121.364168][ T1053]  __schedule+0x755/0x1580
+[ 1121.383622][ T1053]  schedule+0xa8/0x270
+[ 1121.388406][ T1053]  schedule_preempt_disabled+0x13/0x20
+[ 1121.393867][ T1053]  __mutex_lock+0x751/0x1340
+[ 1121.418979][ T1053]  mutex_lock_nested+0x16/0x20
+[ 1121.428843][ T1053]  rtnl_lock+0x17/0x20
+[ 1121.433240][ T1053]  sock_do_ioctl+0x24e/0x2f0
+[ 1121.461519][ T1053]  sock_ioctl+0x3ed/0x790
+[ 1121.475863][ T1053]  do_vfs_ioctl+0xdb6/0x13e0
+[ 1121.517150][ T1053]  ksys_ioctl+0xab/0xd0
+[ 1121.521422][ T1053]  __x64_sys_ioctl+0x73/0xb0
+[ 1121.526302][ T1053]  do_syscall_64+0xfd/0x6a0
+[ 1121.530827][ T1053]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[ 1121.536832][ T1053] RIP: 0033:0x459829
+[ 1121.540747][ T1053] Code: Bad RIP value.
+[ 1121.544863][ T1053] RSP: 002b:00007efdcbf7ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[ 1121.554163][ T1053] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
+[ 1121.562455][ T1053] RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000003
+[ 1121.570551][ T1053] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[ 1121.587235][ T1053] R10: 0000000000000000 R11: 0000000000000246 R12: 00007efdcbf7f6d4
+[ 1121.595270][ T1053] R13: 00000000004c0c29 R14: 00000000004d3c20 R15: 00000000ffffffff
+[ 1121.603604][ T1053] 
+[ 1121.603604][ T1053] Showing all locks held in the system:
+[ 1121.612362][ T1053] 3 locks held by kworker/0:0/5:
+[ 1121.617375][ T1053]  #0: 00000000ca2a6787 ((wq_completion)events){+.+.}, at: process_one_work+0x88b/0x1740
+[ 1121.627267][ T1053]  #1: 000000007322d568 (deferred_process_work){+.+.}, at: process_one_work+0x8c1/0x1740
+[ 1121.637367][ T1053]  #2: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.646520][ T1053] 4 locks held by kworker/u4:2/24:
+[ 1121.651644][ T1053]  #0: 00000000b8d372cb ((wq_completion)netns){+.+.}, at: process_one_work+0x88b/0x1740
+[ 1121.661452][ T1053]  #1: 000000004782a238 (net_cleanup_work){+.+.}, at: process_one_work+0x8c1/0x1740
+[ 1121.671852][ T1053]  #2: 00000000a28d9920 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0xa70
+[ 1121.680796][ T1053]  #3: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.688938][ T1053] 1 lock held by khungtaskd/1053:
+[ 1121.694207][ T1053]  #0: 0000000054249aed (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
+[ 1121.703911][ T1053] 3 locks held by kworker/1:2/2857:
+[ 1121.709273][ T1053]  #0: 00000000bc8d780e ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x88b/0x1740
+[ 1121.719885][ T1053]  #1: 00000000b0bf8297 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8c1/0x1740
+[ 1121.729969][ T1053]  #2: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.739277][ T1053] 1 lock held by rsyslogd/9033:
+[ 1121.744175][ T1053]  #0: 00000000f196c93b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
+[ 1121.752999][ T1053] 2 locks held by getty/9123:
+[ 1121.757911][ T1053]  #0: 00000000e0b1e502 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.767341][ T1053]  #1: 0000000048566469 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.778192][ T1053] 2 locks held by getty/9124:
+[ 1121.783345][ T1053]  #0: 0000000037b7e548 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.792596][ T1053]  #1: 00000000ef96a409 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.802385][ T1053] 2 locks held by getty/9125:
+[ 1121.807399][ T1053]  #0: 00000000425bfa1f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.817102][ T1053]  #1: 000000002772175c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.827676][ T1053] 2 locks held by getty/9126:
+[ 1121.832546][ T1053]  #0: 000000006258c8ab (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.841777][ T1053]  #1: 00000000db5792f3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.851568][ T1053] 2 locks held by getty/9127:
+[ 1121.856505][ T1053]  #0: 00000000404d7cde (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.866293][ T1053]  #1: 000000004e7d21a3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.876526][ T1053] 2 locks held by getty/9128:
+[ 1121.881394][ T1053]  #0: 00000000e9525678 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.890842][ T1053]  #1: 00000000b3f75441 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.900976][ T1053] 2 locks held by getty/9129:
+[ 1121.906923][ T1053]  #0: 0000000029bd9625 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[ 1121.916247][ T1053]  #1: 00000000e766e31d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[ 1121.926250][ T1053] 2 locks held by kworker/u4:8/9999:
+[ 1121.931910][ T1053]  #0: 00000000a6c03799 (&rq->lock){-.-.}, at: __schedule+0x1f5/0x1580
+[ 1121.940499][ T1053]  #1: 0000000054249aed (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0
+[ 1121.950081][ T1053] 1 lock held by syz-executor.2/13855:
+[ 1121.955808][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.963976][ T1053] 1 lock held by syz-executor.1/1147:
+[ 1121.969428][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.977803][ T1053] 1 lock held by syz-executor.0/20090:
+[ 1121.983260][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1121.991475][ T1053] 1 lock held by syz-executor.3/20104:
+[ 1121.997172][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1122.005404][ T1053] 1 lock held by syz-executor.5/20132:
+[ 1122.011199][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1122.019724][ T1053] 1 lock held by syz-executor.5/20135:
+[ 1122.025517][ T1053]  #0: 000000009930efbd (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[ 1122.034246][ T1053] 
+[ 1122.038072][ T1053] =============================================
+[ 1122.038072][ T1053] 
+[ 1122.047720][ T1053] NMI backtrace for cpu 1
+[ 1122.053721][ T1053] CPU: 1 PID: 1053 Comm: khungtaskd Not tainted 5.2.0+ #97
+[ 1122.062308][ T1053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1122.074645][ T1053] Call Trace:
+[ 1122.078184][ T1053]  dump_stack+0x172/0x1f0
+[ 1122.082779][ T1053]  nmi_cpu_backtrace.cold+0x70/0xb2
+[ 1122.100440][ T1053]  nmi_trigger_cpumask_backtrace+0x23b/0x28b
+[ 1122.106746][ T1053]  arch_trigger_cpumask_backtrace+0x14/0x20
+[ 1122.112836][ T1053]  watchdog+0x9d0/0xef0
+[ 1122.117560][ T1053]  kthread+0x361/0x430
+[ 1122.135103][ T1053]  ret_from_fork+0x24/0x30
+[ 1122.139897][ T1053] Sending NMI from CPU 1 to CPUs 0:
+[ 1122.146060][    C0] NMI backtrace for cpu 0
+[ 1122.146067][    C0] CPU: 0 PID: 9999 Comm: kworker/u4:8 Not tainted 5.2.0+ #97
+[ 1122.146073][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1122.146077][    C0] Workqueue: bat_events batadv_nc_worker
+[ 1122.146085][    C0] RIP: 0010:__lock_acquire+0x65f/0x4c30
+[ 1122.146096][    C0] Code: 77 48 8b b5 60 ff ff ff 48 8d 04 80 4c 8d 74 c6 d8 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 21 48 89 fa 48 c1 ea 03 0f b6 04 02 <48> 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 47 17 00 00 49 8d 7a 21
+[ 1122.146101][    C0] RSP: 0018:ffff888068aefb38 EFLAGS: 00000802
+[ 1122.146109][    C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81588694
+[ 1122.146114][    C0] RDX: 1ffff11012630183 RSI: ffff888093180bd0 RDI: ffff888093180c19
+[ 1122.146120][    C0] RBP: ffff888068aefc50 R08: 1ffffffff14a7740 R09: fffffbfff14a7741
+[ 1122.146125][    C0] R10: ffff888093180c20 R11: ffff888093180340 R12: 0000000000000029
+[ 1122.146130][    C0] R13: 4d24e336586895d7 R14: ffff888093180bf8 R15: 0000000000000000
+[ 1122.146143][    C0] FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
+[ 1122.146148][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[ 1122.146154][    C0] CR2: 000000c4213d5800 CR3: 0000000095df9000 CR4: 00000000001406f0
+[ 1122.146159][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[ 1122.146165][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[ 1122.146168][    C0] Call Trace:
+[ 1122.146175][    C0]  lock_acquire+0x190/0x410
+[ 1122.146183][    C0]  batadv_nc_worker+0x117/0x760
+[ 1122.146193][    C0]  process_one_work+0x9af/0x1740
+[ 1122.146205][    C0]  worker_thread+0x98/0xe40
+[ 1122.146209][    C0]  kthread+0x361/0x430
+[ 1122.146221][    C0]  ret_from_fork+0x24/0x30
+[ 1122.146611][ T1053] Kernel panic - not syncing: hung_task: blocked tasks
+[ 1122.359476][ T1053] CPU: 1 PID: 1053 Comm: khungtaskd Not tainted 5.2.0+ #97
+[ 1122.366887][ T1053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 1122.376957][ T1053] Call Trace:
+[ 1122.380298][ T1053]  dump_stack+0x172/0x1f0
+[ 1122.384681][ T1053]  panic+0x2dc/0x755
+[ 1122.423857][ T1053]  watchdog+0x9e1/0xef0
+[ 1122.428055][ T1053]  kthread+0x361/0x430
+[ 1122.444125][ T1053]  ret_from_fork+0x24/0x30
+[ 1122.450078][ T1053] Kernel Offset: disabled
+[ 1122.454674][ T1053] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/441 b/pkg/report/testdata/linux/report/441
new file mode 100644
index 000000000..c17ea606f
--- /dev/null
+++ b/pkg/report/testdata/linux/report/441
@@ -0,0 +1,1165 @@
+TITLE: INFO: task hung in rtnl_lock
+TYPE: HANG
+
+[ 2293.019020] INFO: task syz-executor.1:5269 blocked for more than 140 seconds.
+[ 2293.026599]       Not tainted 4.15.0 #0
+[ 2293.030630] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[ 2293.038603] syz-executor.1  D10912  5269   3856 0xb0020002 2141275110779
+[ 2293.045586] Call Trace:
+[ 2293.048190]  [<ffffffff8147436f>] context_switch+0x60f/0xa60
+[ 2293.054041]  [<ffffffff8100095a>] __schedule+0x5aa/0x1da0
+[ 2293.065602]  [<ffffffff810021df>] schedule+0x8f/0x1b0
+[ 2293.071614]  [<ffffffff81002a80>] schedule_preempt_disabled+0x10/0x20
+[ 2293.078192]  [<ffffffff810075ad>] __mutex_lock+0x82d/0x1430
+[ 2293.110642]  [<ffffffff810081c6>] mutex_lock_nested+0x16/0x20
+[ 2293.122940]  [<ffffffff83a7b4b7>] rtnl_lock+0x17/0x20
+[ 2293.128134]  [<ffffffff8401aad8>] ipv6_sock_ac_close+0x108/0x380
+[ 2293.141749]  [<ffffffff8401313b>] inet6_release+0x4b/0x80
+[ 2293.147312]  [<ffffffff83997aa3>] __sock_release+0xd3/0x2b0
+[ 2293.159202]  [<ffffffff83997c9b>] sock_close+0x1b/0x30
+[ 2293.164486]  [<ffffffff81acb0a9>] __fput+0x2b9/0x790
+[ 2293.169648]  [<ffffffff81acb606>] ____fput+0x16/0x20
+[ 2293.174765]  [<ffffffff8144457d>] task_work_run+0x13d/0x1c0
+[ 2293.180559]  [<ffffffff813db9f1>] do_exit+0x9f1/0x2fb0
+[ 2293.204036]  [<ffffffff813de155>] do_group_exit+0x135/0x370
+[ 2293.209806]  [<ffffffff8140e61b>] get_signal+0x70b/0x1810
+[ 2293.215388]  [<ffffffff812da770>] do_signal+0x90/0x3f0
+[ 2293.246332]  [<ffffffff8101a9bf>] exit_to_usermode_loop+0x2cf/0x360
+[ 2293.252877]  [<ffffffff8101ddd5>] do_fast_syscall_32+0xb55/0xe1c
+[ 2293.265828]  [<ffffffff84401ad0>] entry_SYSENTER_compat+0x90/0xa2
+[ 2293.272527] RIP: 0023:0xf7fddc69
+[ 2293.275984] RSP: 002b:00000000f5dd912c EFLAGS: 00000286 ORIG_RAX: 00000000000000f0
+[ 2293.283751] RAX: fffffffffffffe00 RBX: 000000000816af88 RCX: 0000000000000080
+[ 2293.291257] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000816af8c
+[ 2293.298516] RBP: 00000000f5dd9228 R08: 0000000000000000 R09: 0000000000000000
+[ 2293.306003] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
+[ 2293.313301] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[ 2293.320622] 
+[ 2293.320622] Showing all locks held in the system:
+[ 2293.327408] 2 locks held by khungtaskd/736:
+[ 2293.331778]  #0:  (rcu_read_lock){....}, at: [<00000000234f2b12>] watchdog+0x147/0xc60
+[ 2293.339910]  #1:  (tasklist_lock){.+.+}, at: [<00000000d8a75bbd>] debug_show_all_locks+0x7f/0x230
+[ 2293.349140] 2 locks held by getty/3820:
+[ 2293.353105]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.361815]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.371163] 2 locks held by getty/3821:
+[ 2293.375138]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.383880]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.393222] 2 locks held by getty/3822:
+[ 2293.397182]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.405899]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.415570] 2 locks held by getty/3823:
+[ 2293.419560]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.428256]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.437670] 2 locks held by getty/3824:
+[ 2293.442149]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.451007]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.460361] 2 locks held by getty/3825:
+[ 2293.464329]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.473066]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.482581] 2 locks held by getty/3826:
+[ 2293.486545]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000011186ac6>] ldsem_down_read+0x33/0x40
+[ 2293.495315]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000046d11496>] n_tty_read+0x232/0x1b70
+[ 2293.504823] 2 locks held by syz-executor.1/5269:
+[ 2293.509622]  #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c74202b6>] __sock_release+0x89/0x2b0
+[ 2293.519339]  #1:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.527088] 3 locks held by kworker/1:31/7015:
+[ 2293.531753]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.541679]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.553755]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.569131] 2 locks held by syz-executor.5/8061:
+[ 2293.573878]  #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c74202b6>] __sock_release+0x89/0x2b0
+[ 2293.583597]  #1:  (rcu_sched_state.exp_mutex){+.+.}, at: [<0000000061913326>] _synchronize_rcu_expedited.constprop.0+0x63f/0x1050
+[ 2293.595472] 1 lock held by syz-executor.0/8849:
+[ 2293.600164]  #0:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.607908] 1 lock held by syz-executor.0/8868:
+[ 2293.612631]  #0:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.621802] 4 locks held by kworker/u4:0/23815:
+[ 2293.626474]  #0:  ((wq_completion)"%s""netns"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.636547]  #1:  (net_cleanup_work){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.645864]  #2:  (pernet_ops_rwsem){++++}, at: [<0000000071033d78>] cleanup_net+0x9d/0xa20
+[ 2293.654431]  #3:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.662320] 1 lock held by syz-executor.2/32044:
+[ 2293.667357]  #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c74202b6>] __sock_release+0x89/0x2b0
+[ 2293.677204] 3 locks held by kworker/1:5/18912:
+[ 2293.681832]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.691620]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.704016]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.711897] 3 locks held by kworker/0:0/8300:
+[ 2293.716388]  #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.727996]  #1:  ((addr_chk_work).work){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.738216]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.746029] 3 locks held by kworker/1:0/2215:
+[ 2293.750558]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.760337]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.772402]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.780208] 3 locks held by kworker/0:2/12617:
+[ 2293.784791]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.794568]  #1:  ((linkwatch_work).work){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.804168]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.811955] 3 locks held by kworker/1:1/18128:
+[ 2293.816630]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2293.826685]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2293.839531]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2293.847275] 1 lock held by syz-executor.5/20254:
+[ 2293.852066]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.860718] 2 locks held by syz-executor.5/20281:
+[ 2293.865553]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.875917]  #1:  (rcu_sched_state.exp_mutex){+.+.}, at: [<00000000e789371b>] _synchronize_rcu_expedited.constprop.0+0xdeb/0x1050
+[ 2293.889307] 1 lock held by syz-executor.0/20298:
+[ 2293.894054]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.902882] 1 lock held by syz-executor.1/20318:
+[ 2293.907644]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.916298] 1 lock held by syz-executor.1/20321:
+[ 2293.921078]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.929735] 1 lock held by syz-executor.1/20328:
+[ 2293.934486]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.943282] 1 lock held by syz-executor.1/20331:
+[ 2293.948035]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.956717] 1 lock held by syz-executor.1/20332:
+[ 2293.961557]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.970809] 1 lock held by syz-executor.1/20335:
+[ 2293.976369]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.985211] 1 lock held by syz-executor.1/20338:
+[ 2293.990001]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2293.998620] 3 locks held by kworker/1:2/20343:
+[ 2294.003685]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.013475]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.025502]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.033284] 3 locks held by kworker/1:3/20344:
+[ 2294.038469]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.048240]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.060322]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.070177] 3 locks held by kworker/1:4/20345:
+[ 2294.074879]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.084655]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.096685]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.104462] 3 locks held by kworker/1:6/20346:
+[ 2294.109068]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.119624]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.131652]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.140029] 3 locks held by kworker/1:7/20347:
+[ 2294.144608]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.154384]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.166686]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.177109] 3 locks held by kworker/1:8/20348:
+[ 2294.181707]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.191476]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.203503]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.211293] 3 locks held by kworker/1:9/20349:
+[ 2294.215869]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.225620]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.237649]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.245481] 3 locks held by kworker/1:10/20350:
+[ 2294.250174]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.259951]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.273447]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.282141] 3 locks held by kworker/1:11/20351:
+[ 2294.287255]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.297096]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.309490]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.317254] 3 locks held by kworker/1:12/20352:
+[ 2294.321953]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.331769]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.343970]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.351734] 3 locks held by kworker/1:13/20353:
+[ 2294.356398]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.366355]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.380375]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.388215] 3 locks held by kworker/1:14/20354:
+[ 2294.392920]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.402733]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.415603]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.423997] 3 locks held by kworker/1:15/20355:
+[ 2294.428654]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.438423]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.450454]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.458982] 3 locks held by kworker/1:16/20356:
+[ 2294.463644]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.474765]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.488159]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.495929] 3 locks held by kworker/1:17/20357:
+[ 2294.500653]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.510673]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.522706]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.530494] 3 locks held by kworker/1:18/20358:
+[ 2294.535159]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.544932]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.556964]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.564768] 3 locks held by kworker/1:19/20359:
+[ 2294.569462]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.579226]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.591337]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.599123] 3 locks held by kworker/1:20/20360:
+[ 2294.603794]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.613581]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.625615]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.633380] 3 locks held by kworker/1:21/20361:
+[ 2294.638070]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.647819]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.659836]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.667581] 3 locks held by kworker/1:22/20362:
+[ 2294.672469]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.682318]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.694346]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.702110] 3 locks held by kworker/1:23/20363:
+[ 2294.706781]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.716552]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.728586]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.736364] 3 locks held by kworker/1:24/20364:
+[ 2294.741052]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.750817]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.762836]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.770698] 3 locks held by kworker/1:25/20365:
+[ 2294.775459]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.785755]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.797794]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.805608] 3 locks held by kworker/1:26/20366:
+[ 2294.810304]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.820099]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.832137]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.839914] 3 locks held by kworker/1:27/20367:
+[ 2294.844573]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.854330]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.866358]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.874141] 3 locks held by kworker/1:28/20368:
+[ 2294.878796]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.888563]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.900592]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.908336] 3 locks held by kworker/1:29/20369:
+[ 2294.913053]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.922829]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.934855]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.942629] 3 locks held by kworker/1:30/20370:
+[ 2294.947370]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.957123]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2294.969160]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2294.981100] 3 locks held by kworker/1:32/20371:
+[ 2294.985756]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2294.995532]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.007566]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.015357] 3 locks held by kworker/1:33/20372:
+[ 2295.020041]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.029807]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.041847]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.049630] 3 locks held by kworker/1:34/20373:
+[ 2295.054291]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.064069]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.076097]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.083878] 3 locks held by kworker/1:35/20374:
+[ 2295.088533]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.098309]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.110329]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.118061] 3 locks held by kworker/1:36/20375:
+[ 2295.122784]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.132566]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.144600]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.152373] 3 locks held by kworker/1:37/20376:
+[ 2295.157036]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.166823]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.178854]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.186579] 3 locks held by kworker/1:38/20377:
+[ 2295.191279]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.201089]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.213124]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.220912] 3 locks held by kworker/1:39/20378:
+[ 2295.225581]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.235352]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.247385]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.255283] 3 locks held by kworker/1:40/20379:
+[ 2295.260092]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.269900]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.281943]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.289749] 3 locks held by kworker/1:41/20380:
+[ 2295.294411]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.304197]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.316232]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.324017] 3 locks held by kworker/1:42/20381:
+[ 2295.328674]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.338575]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.350611]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.358338] 3 locks held by kworker/1:43/20382:
+[ 2295.363041]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.372804]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.384832]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.392599] 3 locks held by kworker/1:44/20383:
+[ 2295.397258]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.407069]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.419126]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.426951] 3 locks held by kworker/1:45/20384:
+[ 2295.431661]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.441526]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.453722]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.461511] 3 locks held by kworker/1:46/20385:
+[ 2295.466168]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.475993]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.488025]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.495809] 3 locks held by kworker/1:47/20386:
+[ 2295.500494]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.510273]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.522295]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.530064] 3 locks held by kworker/1:48/20387:
+[ 2295.534724]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.545043]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.557075]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.564855] 3 locks held by kworker/1:49/20388:
+[ 2295.569532]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.579299]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.591330]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.599120] 3 locks held by kworker/1:50/20389:
+[ 2295.603777]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.613546]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.625575]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.633326] 3 locks held by kworker/1:51/20390:
+[ 2295.637983]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.647749]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.659783]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.667515] 3 locks held by kworker/1:52/20391:
+[ 2295.672650]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.684437]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.696496]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.704302] 3 locks held by kworker/1:53/20392:
+[ 2295.709009]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.718738]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.730755]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.738489] 3 locks held by kworker/1:54/20393:
+[ 2295.743189]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.753141]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.765178]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.774447] 3 locks held by kworker/1:55/20394:
+[ 2295.779744]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.789516]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.801592]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.809376] 3 locks held by kworker/1:56/20395:
+[ 2295.814646]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.824876]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.836928]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.844750] 3 locks held by kworker/1:57/20396:
+[ 2295.849446]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.859222]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.871277]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.879045] 3 locks held by kworker/1:58/20397:
+[ 2295.883699]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.893475]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.905508]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.913354] 3 locks held by kworker/1:59/20398:
+[ 2295.918015]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.927797]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.939821]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.947536] 3 locks held by kworker/1:60/20399:
+[ 2295.952225]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.961997]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2295.974043]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2295.981808] 3 locks held by kworker/1:61/20400:
+[ 2295.986480]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2295.996237]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.008259]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.016034] 3 locks held by kworker/1:62/20401:
+[ 2296.020719]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.030469]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.042493]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.050285] 3 locks held by kworker/1:63/20402:
+[ 2296.054945]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.064695]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.076821]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.084600] 3 locks held by kworker/1:64/20403:
+[ 2296.089282]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.099047]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.111072]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.118799] 3 locks held by kworker/1:65/20404:
+[ 2296.123500]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.133346]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.145378]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.153157] 3 locks held by kworker/1:66/20405:
+[ 2296.157818]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.167609]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.179632]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.187372] 3 locks held by kworker/1:67/20406:
+[ 2296.192093]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.201882]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.213904]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.221674] 3 locks held by kworker/1:68/20407:
+[ 2296.226342]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.236623]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.248647]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.256435] 3 locks held by kworker/1:69/20408:
+[ 2296.261126]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.270882]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.283043]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.290838] 3 locks held by kworker/1:70/20409:
+[ 2296.295495]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.305252]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.317716]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.325495] 3 locks held by kworker/1:71/20410:
+[ 2296.330175]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.339940]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.351960]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.359720] 3 locks held by kworker/1:72/20411:
+[ 2296.364374]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.374128]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.386158]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.393955] 3 locks held by kworker/1:73/20412:
+[ 2296.398618]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.408409]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.420468]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.428203] 3 locks held by kworker/1:74/20413:
+[ 2296.432929]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.442742]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.454830]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.462611] 3 locks held by kworker/1:75/20414:
+[ 2296.467276]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.477065]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.489105]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.496841] 3 locks held by kworker/1:76/20415:
+[ 2296.501596]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.511371]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.523406]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.531188] 3 locks held by kworker/1:77/20416:
+[ 2296.535848]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.545632]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.557691]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.565473] 3 locks held by kworker/1:78/20417:
+[ 2296.570155]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.579921]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.591951]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.599722] 3 locks held by kworker/1:79/20418:
+[ 2296.604383]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.614164]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.626544]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.634324] 3 locks held by kworker/1:80/20419:
+[ 2296.639002]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.648857]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.660884]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.668627] 3 locks held by kworker/1:81/20420:
+[ 2296.673321]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.683092]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.695140]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.702905] 3 locks held by kworker/1:82/20421:
+[ 2296.707585]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.720326]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.732365]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.740750] 3 locks held by kworker/1:83/20422:
+[ 2296.745416]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.755204]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.767240]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.775013] 3 locks held by kworker/1:84/20423:
+[ 2296.779701]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.789472]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.801507]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.809289] 3 locks held by kworker/1:85/20424:
+[ 2296.813943]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.823790]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.835815]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.843565] 3 locks held by kworker/1:86/20425:
+[ 2296.848224]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.858025]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.870067]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.877804] 3 locks held by kworker/1:87/20426:
+[ 2296.882511]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.892297]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.904335]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.912102] 3 locks held by kworker/1:88/20427:
+[ 2296.916755]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.926594]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.938616]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.946402] 3 locks held by kworker/1:89/20428:
+[ 2296.951091]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.960858]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2296.972883]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2296.980683] 3 locks held by kworker/1:90/20429:
+[ 2296.985340]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2296.995100]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.007129]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.014910] 3 locks held by kworker/1:91/20430:
+[ 2297.019604]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.029387]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.041408]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.049174] 3 locks held by kworker/1:92/20431:
+[ 2297.053832]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.063602]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.075613]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.083366] 3 locks held by kworker/1:93/20432:
+[ 2297.088024]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.097801]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.109818]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.117546] 3 locks held by kworker/1:94/20433:
+[ 2297.122253]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.132011]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.144028]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.151789] 3 locks held by kworker/1:95/20434:
+[ 2297.156454]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.166197]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.178221]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.185999] 3 locks held by kworker/1:96/20435:
+[ 2297.190682]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.200442]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.212464]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.220236] 3 locks held by kworker/1:97/20436:
+[ 2297.224892]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.234730]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.250332]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.258112] 3 locks held by kworker/1:98/20437:
+[ 2297.262862]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.272636]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.284677]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.292518] 3 locks held by kworker/1:99/20438:
+[ 2297.297174]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.306927]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.318940]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.326676] 3 locks held by kworker/1:100/20439:
+[ 2297.331465]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.341231]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.353254]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.361038] 3 locks held by kworker/1:101/20440:
+[ 2297.365785]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.375555]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.387591]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.395401] 3 locks held by kworker/1:102/20441:
+[ 2297.400221]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.410025]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.422097]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.429891] 3 locks held by kworker/1:103/20442:
+[ 2297.434681]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.444504]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.456545]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.464341] 3 locks held by kworker/1:104/20443:
+[ 2297.469170]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.478941]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.490998]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.498736] 3 locks held by kworker/1:105/20444:
+[ 2297.503542]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.513362]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.525568]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.533329] 3 locks held by kworker/1:106/20445:
+[ 2297.538084]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.548839]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.560873]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.568597] 3 locks held by kworker/1:107/20446:
+[ 2297.573378]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.583150]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.595190]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.602955] 3 locks held by kworker/1:108/20447:
+[ 2297.607704]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.617461]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.629483]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.637217] 3 locks held by kworker/1:109/20448:
+[ 2297.641996]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.651840]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.663885]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.671646] 3 locks held by kworker/1:110/20449:
+[ 2297.676389]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.686155]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.698183]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.705958] 3 locks held by kworker/1:111/20450:
+[ 2297.710734]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.720487]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.734616]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.742411] 3 locks held by kworker/1:112/20451:
+[ 2297.747158]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.756944]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.768981]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.776711] 3 locks held by kworker/1:113/20452:
+[ 2297.781505]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.791306]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.803336]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.811138] 3 locks held by kworker/1:114/20453:
+[ 2297.815891]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.825709]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.837753]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.845539] 3 locks held by kworker/1:115/20454:
+[ 2297.850316]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.860097]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.872142]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.879948] 3 locks held by kworker/1:116/20455:
+[ 2297.884698]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.894514]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.906559]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.914366] 3 locks held by kworker/1:117/20456:
+[ 2297.919151]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.928941]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.940977]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.948739] 3 locks held by kworker/1:118/20457:
+[ 2297.953550]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.963322]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2297.975354]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2297.983135] 3 locks held by kworker/1:119/20458:
+[ 2297.987916]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2297.997704]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.009740]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.017466] 3 locks held by kworker/1:120/20459:
+[ 2298.022337]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.032144]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.044169]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.051933] 3 locks held by kworker/1:121/20460:
+[ 2298.056678]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.066457]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.078484]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.086263] 3 locks held by kworker/1:122/20461:
+[ 2298.091052]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.100844]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.112868]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.120642] 3 locks held by kworker/1:123/20462:
+[ 2298.125388]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.135425]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.147469]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.155267] 3 locks held by kworker/1:124/20463:
+[ 2298.160043]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.169829]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.181855]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.189642] 3 locks held by kworker/1:125/20464:
+[ 2298.194392]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.204173]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.216226]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.224068] 3 locks held by kworker/1:126/20465:
+[ 2298.228862]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.238625]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.250647]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.258380] 3 locks held by kworker/1:127/20466:
+[ 2298.263217]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.273003]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.285040]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.299520] 3 locks held by kworker/1:128/20467:
+[ 2298.304263]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.314058]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.326101]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.333905] 3 locks held by kworker/1:129/20468:
+[ 2298.338735]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.348495]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.360527]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.368254] 3 locks held by kworker/1:130/20469:
+[ 2298.373033]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.382804]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.394859]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.402630] 3 locks held by kworker/1:131/20470:
+[ 2298.407376]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.417163]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.429221]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.436969] 3 locks held by kworker/1:132/20471:
+[ 2298.441814]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.451585]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.463628]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.471419] 3 locks held by kworker/1:133/20472:
+[ 2298.476166]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.485969]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.498002]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.505786] 3 locks held by kworker/1:134/20473:
+[ 2298.510559]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.520322]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.532370]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.540151] 3 locks held by kworker/1:135/20474:
+[ 2298.544897]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.554687]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.566716]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.574492] 3 locks held by kworker/1:136/20475:
+[ 2298.579268]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.589036]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.601056]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.608780] 3 locks held by kworker/1:137/20476:
+[ 2298.613562]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.623329]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.635457]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.643222] 3 locks held by kworker/1:138/20477:
+[ 2298.647959]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.657736]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.669768]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.677495] 3 locks held by kworker/1:139/20478:
+[ 2298.682298]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.692068]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.704100]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.711881] 3 locks held by kworker/1:140/20479:
+[ 2298.716620]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.726393]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.743728]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.751509] 3 locks held by kworker/1:141/20480:
+[ 2298.756263]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.766024]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.778058]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.785851] 3 locks held by kworker/1:142/20481:
+[ 2298.790633]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.800405]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.812434]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.820235] 3 locks held by kworker/1:143/20482:
+[ 2298.825865]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.835646]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.847692]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.855474] 3 locks held by kworker/1:144/20483:
+[ 2298.860242]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.870007]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.882034]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.890243] 3 locks held by kworker/1:145/20484:
+[ 2298.894988]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.904769]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.916896]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.924686] 3 locks held by kworker/1:146/20485:
+[ 2298.929459]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.940196]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.952242]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.960205] 3 locks held by kworker/1:147/20486:
+[ 2298.964954]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2298.974779]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2298.986813]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2298.994605] 3 locks held by kworker/1:148/20487:
+[ 2298.999473]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.009240]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.021380]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.029155] 3 locks held by kworker/1:149/20488:
+[ 2299.033930]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.043712]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.055735]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.063489] 3 locks held by kworker/1:150/20489:
+[ 2299.068237]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.078013]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.090054]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.097789] 3 locks held by kworker/1:151/20490:
+[ 2299.102581]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.112351]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.124389]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.132154] 3 locks held by kworker/1:152/20491:
+[ 2299.136900]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.146689]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.158727]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.166517] 3 locks held by kworker/1:153/20492:
+[ 2299.171289]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.181040]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.193063]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.204922] 3 locks held by kworker/1:154/20493:
+[ 2299.209695]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.219452]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.231496]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.239274] 3 locks held by kworker/1:155/20494:
+[ 2299.244022]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.253803]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.265827]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.273623] 3 locks held by kworker/1:156/20495:
+[ 2299.278365]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.288116]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.300138]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.307865] 3 locks held by kworker/1:157/20496:
+[ 2299.312643]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.322408]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.334435]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.342224] 3 locks held by kworker/1:158/20497:
+[ 2299.346966]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.356719]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.368742]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.376517] 3 locks held by kworker/1:159/20498:
+[ 2299.381286]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.391049]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.403186]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.410991] 3 locks held by kworker/1:160/20499:
+[ 2299.415783]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.425606]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.437656]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.445464] 3 locks held by kworker/1:161/20500:
+[ 2299.450240]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.460026]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.472058]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.479834] 3 locks held by kworker/1:162/20501:
+[ 2299.484574]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.494348]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.506395]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.514184] 3 locks held by kworker/1:163/20502:
+[ 2299.518974]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.528704]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.540728]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.548506] 3 locks held by kworker/1:164/20503:
+[ 2299.553308]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.563108]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.575149]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.582931] 3 locks held by kworker/1:165/20504:
+[ 2299.587671]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.597436]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.609486]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.619435] 3 locks held by kworker/1:166/20505:
+[ 2299.624184]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.633954]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.645998]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.653776] 3 locks held by kworker/1:167/20506:
+[ 2299.658519]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.668295]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.680331]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.688068] 3 locks held by kworker/1:168/20507:
+[ 2299.692855]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.702638]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.714679]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.722474] 3 locks held by kworker/1:169/20508:
+[ 2299.727218]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.736988]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.749014]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.756747] 3 locks held by kworker/1:170/20509:
+[ 2299.761539]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.771329]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.783455]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.791250] 3 locks held by kworker/1:171/20510:
+[ 2299.796006]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.805806]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.821138]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.828919] 3 locks held by kworker/1:172/20511:
+[ 2299.833662]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.843436]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.855468]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.863255] 3 locks held by kworker/1:173/20512:
+[ 2299.868005]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.877872]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.889922]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.897664] 3 locks held by kworker/1:174/20513:
+[ 2299.902463]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.912256]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.924308]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.932083] 3 locks held by kworker/1:175/20514:
+[ 2299.936825]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.946685]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.958721]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2299.966596] 3 locks held by kworker/1:176/20515:
+[ 2299.971379]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2299.981150]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2299.993189]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.000967] 3 locks held by kworker/1:177/20516:
+[ 2300.005712]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.015485]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.027518]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.035314] 3 locks held by kworker/1:178/20517:
+[ 2300.040087]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.049855]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.061878]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.069650] 3 locks held by kworker/1:179/20518:
+[ 2300.074397]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.084178]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.096201]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.103992] 3 locks held by kworker/1:180/20519:
+[ 2300.108732]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.118483]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.130499]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.138229] 3 locks held by kworker/1:181/20520:
+[ 2300.143030]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.152794]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.164825]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.172604] 3 locks held by kworker/1:182/20521:
+[ 2300.177348]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.187123]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.199150]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.206874] 3 locks held by kworker/1:183/20522:
+[ 2300.211656]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.221424]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.233447]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.241228] 3 locks held by kworker/1:184/20523:
+[ 2300.245981]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.255870]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.267895]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.275686] 3 locks held by kworker/1:185/20524:
+[ 2300.280459]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.290253]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.302295]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.310089] 3 locks held by kworker/1:186/20525:
+[ 2300.314839]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.324792]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.337255]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.345063] 3 locks held by kworker/1:187/20526:
+[ 2300.349841]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.359606]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.371620]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.379390] 3 locks held by kworker/1:188/20527:
+[ 2300.384139]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.393923]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.405959]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.413734] 3 locks held by kworker/1:189/20528:
+[ 2300.418479]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.428241]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.444703]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.452451] 3 locks held by kworker/1:190/20529:
+[ 2300.457203]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.466987]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.479032]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.487420] 3 locks held by kworker/1:191/20530:
+[ 2300.492214]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.502008]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.514045]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.521816] 3 locks held by kworker/1:192/20531:
+[ 2300.526553]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.536566]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.548587]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.556357] 3 locks held by kworker/1:193/20532:
+[ 2300.561131]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.570882]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.582887]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.590660] 3 locks held by kworker/1:194/20533:
+[ 2300.595419]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.605170]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.617191]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.624977] 3 locks held by kworker/1:195/20534:
+[ 2300.629743]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.639499]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.652135]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.659909] 3 locks held by kworker/1:196/20535:
+[ 2300.664748]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.674518]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.686544]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.694431] 3 locks held by kworker/1:197/20536:
+[ 2300.699206]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.708974]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.721003]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.728733] 3 locks held by kworker/1:198/20537:
+[ 2300.733534]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.743296]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.755302]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.763051] 3 locks held by kworker/1:199/20538:
+[ 2300.774104]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.783891]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.796102]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.803895] 3 locks held by kworker/1:200/20539:
+[ 2300.809038]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.818784]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.830859]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.838693] 3 locks held by kworker/1:201/20540:
+[ 2300.843502]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.853267]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.865360]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.874574] 3 locks held by kworker/1:202/20541:
+[ 2300.879632]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.889938]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.901972]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.909753] 3 locks held by kworker/1:203/20542:
+[ 2300.914505]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.924289]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.936346]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.944123] 3 locks held by kworker/1:204/20543:
+[ 2300.948899]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.958618]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2300.970727]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2300.978743] 3 locks held by kworker/1:205/20544:
+[ 2300.983540]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2300.993318]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.005352]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.013134] 3 locks held by kworker/1:206/20545:
+[ 2301.017877]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.027633]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.039675]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.047432] 3 locks held by kworker/1:207/20546:
+[ 2301.052224]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.061995]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.075527]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.083935] 3 locks held by kworker/1:208/20547:
+[ 2301.088681]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.098481]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.110536]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.118267] 3 locks held by kworker/1:209/20548:
+[ 2301.123049]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.132822]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.145007]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.152885] 3 locks held by kworker/1:210/20549:
+[ 2301.157634]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.167978]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.180828]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.188561] 3 locks held by kworker/1:211/20550:
+[ 2301.193340]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.203224]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.221801]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.229606] 3 locks held by kworker/1:212/20551:
+[ 2301.234353]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.244208]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.256264]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.264396] 3 locks held by kworker/1:213/20552:
+[ 2301.270169]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.280759]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.292815]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.300786] 3 locks held by kworker/1:214/20553:
+[ 2301.305793]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.315568]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.327609]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.335404] 3 locks held by kworker/1:215/20554:
+[ 2301.340176]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.349949]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.362335]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.371189] 3 locks held by kworker/1:216/20555:
+[ 2301.376733]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.386694]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.398733]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.406516] 3 locks held by kworker/1:217/20556:
+[ 2301.411307]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.421161]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.433227]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.445029] 3 locks held by kworker/1:218/20557:
+[ 2301.449825]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.459645]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.472146]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.480099] 3 locks held by kworker/1:219/20558:
+[ 2301.484844]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.494614]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.506824]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.514611] 3 locks held by kworker/1:220/20559:
+[ 2301.519392]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.529160]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.541194]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.548973] 3 locks held by kworker/1:221/20560:
+[ 2301.553717]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.563494]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.577138]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.585081] 3 locks held by kworker/1:222/20561:
+[ 2301.590113]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.599863]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.611899]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.619657] 3 locks held by kworker/1:223/20562:
+[ 2301.624413]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.634270]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.646390]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.654175] 3 locks held by kworker/1:224/20563:
+[ 2301.658958]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.670465]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.682866]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.690639] 3 locks held by kworker/1:225/20564:
+[ 2301.695388]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.705182]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.717219]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.725008] 3 locks held by kworker/1:226/20565:
+[ 2301.729773]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.739533]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.751551]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.759500] 3 locks held by kworker/1:227/20566:
+[ 2301.764341]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.774212]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.786599]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.794382] 3 locks held by kworker/1:228/20567:
+[ 2301.799172]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.808922]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.821055]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.828776] 3 locks held by kworker/1:229/20568:
+[ 2301.833560]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.843323]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.855355]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.863120] 3 locks held by kworker/1:230/20569:
+[ 2301.868233]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.878171]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.890271]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.898013] 3 locks held by kworker/1:231/20570:
+[ 2301.902811]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.912572]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.924687]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.932885] 3 locks held by kworker/1:232/20571:
+[ 2301.937630]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.947402]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.959443]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2301.967358] 3 locks held by kworker/1:233/20572:
+[ 2301.972143]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2301.985516]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2301.997655]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.005433] 3 locks held by kworker/1:234/20573:
+[ 2302.010217]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.019978]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.031996]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.039763] 3 locks held by kworker/1:235/20574:
+[ 2302.044521]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.054264]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.066295]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.074167] 3 locks held by kworker/1:236/20575:
+[ 2302.079212]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.088973]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.101099]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.108866] 3 locks held by kworker/1:237/20576:
+[ 2302.113633]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.123390]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.135433]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.143191] 3 locks held by kworker/1:238/20577:
+[ 2302.147935]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.157774]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.170235]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.178506] 3 locks held by kworker/1:239/20578:
+[ 2302.183302]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.193180]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.205267]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.213036] 3 locks held by kworker/1:240/20579:
+[ 2302.217778]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.227533]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.239556]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.247298] 3 locks held by kworker/1:241/20580:
+[ 2302.252138]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.261924]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.276499]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.284276] 3 locks held by kworker/1:242/20581:
+[ 2302.289049]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.298779]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.310838]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.318570] 3 locks held by kworker/1:243/20582:
+[ 2302.323361]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.333151]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.345267]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.353153] 3 locks held by kworker/1:244/20583:
+[ 2302.357904]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.367680]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.379716]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.387538] 3 locks held by kworker/1:245/20584:
+[ 2302.392325]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.402088]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.414206]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.421966] 3 locks held by kworker/1:246/20585:
+[ 2302.426722]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.436540]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.448589]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.456369] 3 locks held by kworker/1:247/20586:
+[ 2302.461157]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.470916]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.482958]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.490734] 3 locks held by kworker/1:248/20587:
+[ 2302.495484]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.505249]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.517274]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.525161] 3 locks held by kworker/1:249/20588:
+[ 2302.529936]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.539718]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.551887]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.559716] 3 locks held by kworker/1:250/20589:
+[ 2302.564469]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.574254]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.586291]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.594086] 3 locks held by kworker/1:251/20590:
+[ 2302.598861]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.608584]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.620606]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.628359] 3 locks held by kworker/1:252/20591:
+[ 2302.633167]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.642958]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.655013]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.662901] 3 locks held by kworker/1:253/20592:
+[ 2302.667647]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.677514]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.689549]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.697282] 3 locks held by kworker/1:254/20593:
+[ 2302.702077]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.711859]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.723908]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.731682] 3 locks held by kworker/1:255/20594:
+[ 2302.736445]  #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.747420]  #1:  ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.760286]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.768142] 3 locks held by kworker/1:256/20595:
+[ 2302.773412]  #0:  ((wq_completion)"events"){+.+.}, at: [<000000004bdf8431>] process_one_work+0x78e/0x1650
+[ 2302.783394]  #1:  ((work_completion)(&(&dev->link_speed_work)->work)){+.+.}, at: [<00000000d216df56>] process_one_work+0x7c6/0x1650
+[ 2302.795491]  #2:  (rtnl_mutex){+.+.}, at: [<00000000e655fd2b>] rtnl_lock+0x17/0x20
+[ 2302.803311] 1 lock held by syz-executor.2/20599:
+[ 2302.808085]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.816732] 1 lock held by syz-executor.2/20602:
+[ 2302.821515]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.830171] 1 lock held by syz-executor.2/20605:
+[ 2302.834922]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.843638] 1 lock held by syz-executor.2/20606:
+[ 2302.848386]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.861111] 1 lock held by syz-executor.2/20607:
+[ 2302.866230]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.874969] 1 lock held by syz-executor.2/20608:
+[ 2302.879759]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.888894] 1 lock held by syz-executor.2/20609:
+[ 2302.893640]  #0:  (rtnl_mutex){+.+.}, at: [<0000000032a7b79f>] rtnetlink_rcv_msg+0x424/0xc10
+[ 2302.902272] 
+[ 2302.903896] =============================================
+[ 2302.903896] 
+[ 2302.910960] NMI backtrace for cpu 1
+[ 2302.914594] CPU: 1 PID: 736 Comm: khungtaskd Not tainted 4.15.0 #0
+[ 2302.920916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[ 2302.930264] Call Trace:
+[ 2302.932847]  [<ffffffff842731e2>] dump_stack+0x14d/0x20b
+[ 2302.944951]  [<ffffffff8427f9b7>] nmi_cpu_backtrace.cold+0x19/0x98
+[ 2302.958134]  [<ffffffff8427f98a>] nmi_trigger_cpumask_backtrace+0x16a/0x17e
+[ 2302.965294]  [<ffffffff8136f7c4>] arch_trigger_cpumask_backtrace+0x14/0x20
+[ 2302.973174]  [<ffffffff816cfc7d>] watchdog+0x7bd/0xc60
+[ 2302.978548]  [<ffffffff8144c478>] kthread+0x348/0x420
+[ 2302.997497]  [<ffffffff84400273>] ret_from_fork+0x63/0x70
+[ 2303.003138] Sending NMI from CPU 1 to CPUs 0:
diff --git a/pkg/report/testdata/linux/report/442 b/pkg/report/testdata/linux/report/442
new file mode 100644
index 000000000..fda922d9f
--- /dev/null
+++ b/pkg/report/testdata/linux/report/442
@@ -0,0 +1,205 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  716.122185] INFO: task syz-executor.0:16519 blocked for more than 140 seconds.
+[  716.129726]       Not tainted 4.15.0+ #0
+[  716.133779] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  716.141808] syz-executor.0  D11768 16519   3871 0x00000004 548862555260
+[  716.148613] Call Trace:
+[  716.151216]  [<ffffffff8147421f>] context_switch+0x60f/0xa60
+[  716.157078]  [<ffffffff8100095a>] __schedule+0x5aa/0x1da0
+[  716.175467]  [<ffffffff810021df>] schedule+0x8f/0x1b0
+[  716.180696]  [<ffffffff810114e5>] schedule_timeout+0x885/0xee0
+[  716.211892]  [<ffffffff81005cbc>] wait_for_completion+0x29c/0x440
+[  716.238024]  [<ffffffff815a7be2>] __wait_rcu_gp+0x242/0x300
+[  716.243768]  [<ffffffff815bb94f>] synchronize_sched.part.0+0xcf/0xe0
+[  716.276012]  [<ffffffff815bb9ce>] synchronize_sched+0x6e/0xf0
+[  716.281968]  [<ffffffff83a0caad>] synchronize_net+0x4d/0x60
+[  716.287705]  [<ffffffff841943b8>] packet_release+0x978/0xc30
+[  716.311492]  [<ffffffff8398e7c3>] __sock_release+0xd3/0x2b0
+[  716.323245]  [<ffffffff8398e9bb>] sock_close+0x1b/0x30
+[  716.328583]  [<ffffffff81ac97a9>] __fput+0x2b9/0x790
+[  716.333696]  [<ffffffff81ac9d06>] ____fput+0x16/0x20
+[  716.339261]  [<ffffffff8144441d>] task_work_run+0x13d/0x1c0
+[  716.344982]  [<ffffffff8101ae34>] exit_to_usermode_loop+0x304/0x360
+[  716.351418]  [<ffffffff8101cd41>] do_syscall_64+0x5a1/0x770
+[  716.363849]  [<ffffffff84400091>] entry_SYSCALL_64_after_hwframe+0x42/0xb7
+[  716.370884] RIP: 0033:0x4135d1
+[  716.374069] RSP: 002b:00007ffcf697a620 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
+[  716.381801] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004135d1
+[  716.389097] RDX: 0000000000000000 RSI: 000000000000130f RDI: 0000000000000004
+[  716.396367] RBP: 0000000000000001 R08: 00000000aef53312 R09: ffffffffffffffff
+[  716.403673] R10: 00007ffcf697a700 R11: 0000000000000293 R12: 000000000075c9a0
+[  716.410964] R13: 000000000075c9a0 R14: 00000000007618c0 R15: 000000000075bf2c
+[  716.418270] 
+[  716.418270] Showing all locks held in the system:
+[  716.424617] 2 locks held by khungtaskd/733:
+[  716.428984]  #0:  (rcu_read_lock){....}, at: [<00000000725da021>] watchdog+0x147/0xc60
+[  716.437437]  #1:  (tasklist_lock){.+.+}, at: [<00000000587bedf5>] debug_show_all_locks+0x7f/0x230
+[  716.446543] 2 locks held by getty/3831:
+[  716.450542]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.459252]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.468574] 2 locks held by getty/3832:
+[  716.472534]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.481246]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.490567] 2 locks held by getty/3833:
+[  716.494527]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.503234]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.512577] 2 locks held by getty/3834:
+[  716.516541]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.525298]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.534621] 2 locks held by getty/3835:
+[  716.538615]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.547325]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.556624] 2 locks held by getty/3836:
+[  716.560612]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.569325]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.578653] 2 locks held by getty/3837:
+[  716.582618]  #0:  (&tty->ldisc_sem){++++}, at: [<0000000045bcf4ae>] ldsem_down_read+0x33/0x40
+[  716.591327]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<000000003ee65353>] n_tty_read+0x232/0x1b70
+[  716.600778] 1 lock held by syz-executor.0/16519:
+[  716.605525]  #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000e476fb3e>] __sock_release+0x89/0x2b0
+[  716.615199] 1 lock held by syz-executor.1/16564:
+[  716.619973]  #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000e476fb3e>] __sock_release+0x89/0x2b0
+[  716.629642] 
+[  716.631258] =============================================
+[  716.631258] 
+[  716.638295] NMI backtrace for cpu 0
+[  716.641919] CPU: 0 PID: 733 Comm: khungtaskd Not tainted 4.15.0+ #0
+[  716.648311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  716.657657] Call Trace:
+[  716.660249]  [<ffffffff84268022>] dump_stack+0x14d/0x20b
+[  716.672199]  [<ffffffff842745a7>] nmi_cpu_backtrace.cold+0x19/0x98
+[  716.685291]  [<ffffffff8427457a>] nmi_trigger_cpumask_backtrace+0x16a/0x17e
+[  716.692391]  [<ffffffff8136ee14>] arch_trigger_cpumask_backtrace+0x14/0x20
+[  716.699401]  [<ffffffff816d043d>] watchdog+0x7bd/0xc60
+[  716.704683]  [<ffffffff8144c318>] kthread+0x348/0x420
+[  716.723548]  [<ffffffff84400266>] ret_from_fork+0x56/0x70
+[  716.729168] Sending NMI from CPU 0 to CPUs 1:
+[  716.733670] NMI backtrace for cpu 1
+[  716.733680] CPU: 1 PID: 16526 Comm: syz-executor.0 Not tainted 4.15.0+ #0
+[  716.733685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  716.733699] RIP: 0010:lock_acquire+0x15a/0x330
+[  716.733703] RSP: 0018:ffff8801a1d1f1c0 EFLAGS: 00000246
+[  716.733710] RAX: 0000000000000007 RBX: ffff8801bdcd8080 RCX: 0000000000000000
+[  716.733715] RDX: 0000000000000000 RSI: ffff8801bdcd8a48 RDI: 0000000000000246
+[  716.733720] RBP: ffff8801a1d1f208 R08: 0000000000011fdd R09: 0000000000000000
+[  716.733725] R10: ffff8801bdcd8a48 R11: 0000000000000001 R12: ffff8801c932e0e0
+[  716.733729] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
+[  716.733736] FS:  00007f7756ce0700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
+[  716.733741] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[  716.733746] CR2: 00007f1029819140 CR3: 000000017682e004 CR4: 00000000001626f0
+[  716.733754] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[  716.733758] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+[  716.733760] Call Trace:
+[  716.733787]  [<ffffffff81006e74>] __mutex_lock+0xf4/0x1430
+[  716.733874]  [<ffffffff810081c6>] mutex_lock_nested+0x16/0x20
+[  716.733893]  [<ffffffff83ba8841>] tc_new_tfilter+0x6e1/0x1c70
+[  716.734001]  [<ffffffff83a7d1f5>] rtnetlink_rcv_msg+0x935/0xc10
+[  716.734035]  [<ffffffff83ca56ca>] netlink_rcv_skb+0x17a/0x460
+[  716.734076]  [<ffffffff83a7625d>] rtnetlink_rcv+0x1d/0x30
+[  716.734086]  [<ffffffff83ca3a86>] netlink_unicast+0x536/0x720
+[  716.734130]  [<ffffffff83ca450a>] netlink_sendmsg+0x89a/0xd50
+[  716.734176]  [<ffffffff83995cae>] sock_sendmsg+0x12e/0x170
+[  716.734186]  [<ffffffff83997602>] ___sys_sendmsg+0x3e2/0x960
+[  716.734277]  [<ffffffff8399b803>] __sys_sendmmsg+0x1c3/0x4e0
+[  716.734389]  [<ffffffff8399bb52>] SyS_sendmmsg+0x32/0x40
+[  716.734409]  [<ffffffff8101ccc8>] do_syscall_64+0x528/0x770
+[  716.734433]  [<ffffffff84400091>] entry_SYSCALL_64_after_hwframe+0x42/0xb7
+[  716.734440] RIP: 0033:0x459799
+[  716.734444] RSP: 002b:00007f7756cdfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
+[  716.734451] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459799
+[  716.734456] RDX: 04924924924926c0 RSI: 0000000020000140 RDI: 0000000000000006
+[  716.734460] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
+[  716.734465] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7756ce06d4
+[  716.734470] R13: 00000000004c7435 R14: 00000000004de170 R15: 00000000ffffffff
+[  716.734474] Code: ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 01 00 00 c7 83 94 09 00 00 00 00 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 
+[  716.734474] IP: 0xffffffff81556fba:
+[  716.734598] 6fb8  0180820f 8b4c0000 8944c84d 4c006af2 006ae789 44d88945 8944f989 1075ffee
+[  716.734614] 6fd8  49d075ff 4909e9c1 4101f183 e801e183 ffffaa84 0000b848 fc000000 4865dfff
+[  716.734630] 6ff8  00251c8b 480001e1 0994bb8d 83480000 894820c4 eac148fa 14b60f03 f8894802
+[  716.734646] 7018  8307e083 d03803c0 d284087c 01b7850f 83c70000 00000994 00000000 c87d8b48
+[  716.734661] 7038  1f0f9d57 48000044 5bd8658d 5d415c41 5f415e41 8b65c35d ac10db05 48c0897e
+[  716.734677] 7058  8105a30f 0f047a2e ffff5983 5d8944ff 05ff65b8 7eac7020 110d8b48 480477f8
+[  716.734693] 7078  e8c04d89 00050c80 c04d8b48 8b44c085 0d74b85d aaf23d80 0f000477 0000eb84
+[  716.734708] 7098  c9854800 0090840f b8480000 00000000 dffffc00 48ca8948 c148cb89 3c8003ea
+[  716.734724] 70b8  850f0002 0000012b 44018b48 48c05d89 48087b8d 000000be fffc0000 fa8948df
+[  716.734741] 
+[  716.734741] BX: 0xffff8801bdcd8000:
+[  716.734743] 8000  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.734758] 8020  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.734773] 8040  d3c8fb00 ffff8801 c38e4232 00007f09 00000000 00000000 00000000 62696c2f
+[  716.734788] 8060  3638782f 2d34365f 756e696c 6e672d78 696c2f75 732e6362 00362e6f 00000000
+[  716.734804] 8080  8000000c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.734819] 80a0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.734838] 80c0  a1d1c000 ffff8801 00000002 00404140 00000000 00000000 00000000 00000000
+[  716.734853] 80e0  00000001 00000001 00000002 00000000 0000a200 00000001 d799e180 ffff8801
+[  716.734870] 
+[  716.734870] SI: 0xffff8801bdcd89c8:
+[  716.734871] 89c8  84400a6b ffffffff 846004c3 ffffffff 00030465 00030463 00000001 00000001
+[  716.734887] 89e8  813e756a ffffffff 84600602 ffffffff 0003045b 00030464 00000001 00000000
+[  716.734902] 8a08  f326e2f3 bb2ba18d 00000002 00000001 00000000 00000000 83a71a87 ffffffff
+[  716.734917] 8a28  85c11540 ffffffff 00000000 00000000 002000c1 00000000 00000000 00000000
+[  716.734932] 8a48  13f16a10 77c49f94 83ba8841 ffffffff c932e0e0 ffff8801 00000000 00000000
+[  716.734948] 8a68  00200502 00000000 00000000 00000000 d42a1325 a39a4e42 82194f31 ffffffff
+[  716.734963] 8a88  8b1fef40 ffffffff 00000000 00000000 00620002 00000000 00000000 00000000
+[  716.734979] 8aa8  d42a1325 a39a4e42 82194f31 ffffffff 8b1fef40 ffffffff 00000000 00000000
+[  716.734995] 
+[  716.734995] BP: 0xffff8801a1d1f188:
+[  716.734997] f188  00000000 00000000 a1d1f208 ffff8801 81556fec ffffffff 00000000 00000000
+[  716.735012] f1a8  83ba8841 ffffffff 00000000 00000000 00000246 00000000 848d4ec0 ffffffff
+[  716.735028] f1c8  00000001 00000000 00000246 00000000 00000000 00000000 00000000 dffffc00
+[  716.735043] f1e8  00000000 00000000 00000000 00000000 83ba8841 ffffffff c932e080 ffff8801
+[  716.735058] f208  a1d1f3a0 ffff8801 81006e74 ffffffff 83ba8841 ffffffff bdcd8a10 ffff8801
+[  716.735074] f228  00000002 ffffffff 41b58ab3 00000000 85107962 ffffffff 81556660 ffffffff
+[  716.735089] f248  00000002 00000000 00000001 00000000 83ba8841 ffffffff c932e0e0 ffff8801
+[  716.735105] f268  343a3e50 1ffff100 00000000 00000000 343a3e52 1ffff100 41b58ab3 00000000
+[  716.735121] 
+[  716.735121] R10: 0xffff8801bdcd89c8:
+[  716.735123] 89c8  84400a6b ffffffff 846004c3 ffffffff 00030465 00030463 00000001 00000001
+[  716.735138] 89e8  813e756a ffffffff 84600602 ffffffff 0003045b 00030464 00000001 00000000
+[  716.735154] 8a08  f326e2f3 bb2ba18d 00000002 00000001 00000000 00000000 83a71a87 ffffffff
+[  716.735169] 8a28  85c11540 ffffffff 00000000 00000000 002000c1 00000000 00000000 00000000
+[  716.735184] 8a48  13f16a10 77c49f94 83ba8841 ffffffff c932e0e0 ffff8801 00000000 00000000
+[  716.735200] 8a68  00200502 00000000 00000000 00000000 d42a1325 a39a4e42 82194f31 ffffffff
+[  716.735215] 8a88  8b1fef40 ffffffff 00000000 00000000 00620002 00000000 00000000 00000000
+[  716.735230] 8aa8  d42a1325 a39a4e42 82194f31 ffffffff 8b1fef40 ffffffff 00000000 00000000
+[  716.735247] 
+[  716.735247] R12: 0xffff8801c932e060:
+[  716.735249] e060  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.735263] e080  00000000 00000000 00000000 dead4ead ffffffff 00000000 ffffffff ffffffff
+[  716.735279] e0a0  85f9e760 ffffffff 00000000 00000000 00000000 00000000 848d4e00 ffffffff
+[  716.735294] e0c0  00000000 00000000 c932e0c8 ffff8801 c932e0c8 ffff8801 c932e080 ffff8801
+[  716.735310] e0e0  8bb33420 ffffffff 88bcfc50 ffffffff 00000000 00000000 84e32600 ffffffff
+[  716.735325] e100  00000000 00000000 c56196c0 ffff8801 c56196c0 ffff8801 c5619640 ffff8801
+[  716.735341] e120  00000000 00000002 00000000 00000101 00000000 00000000 00000000 00000000
+[  716.735356] e140  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+[  716.735372] 
+[  716.735372] SP: 0xffff8801a1d1f140:
+[  716.735374] f140  bdcd8a10 ffff8801 bdcd8a18 ffff8801 00000246 00000000 22c78f00 6c37ac32
+[  716.735390] f160  bdcd8080 ffff8801 bdcd8080 ffff8801 c932e0e0 ffff8801 00000000 00000000
+[  716.735405] f180  00000000 00000000 00000000 00000000 a1d1f208 ffff8801 81556fec ffffffff
+[  716.735420] f1a0  00000000 00000000 83ba8841 ffffffff 00000000 00000000 00000246 00000000
+[  716.735435] f1c0  848d4ec0 ffffffff 00000001 00000000 00000246 00000000 00000000 00000000
+[  716.735450] f1e0  00000000 dffffc00 00000000 00000000 00000000 00000000 83ba8841 ffffffff
+[  716.735466] f200  c932e080 ffff8801 a1d1f3a0 ffff8801 81006e74 ffffffff 83ba8841 ffffffff
+[  716.735481] f220  bdcd8a10 ffff8801 00000002 ffffffff 41b58ab3 00000000 85107962 ffffffff
+[  716.735692] Kernel panic - not syncing: hung_task: blocked tasks
+[  716.735702] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.831 msecs
+[  717.805254] CPU: 0 PID: 733 Comm: khungtaskd Not tainted 4.15.0+ #0
+[  717.811653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  717.820996] Call Trace:
+[  717.823597]  [<ffffffff84268022>] dump_stack+0x14d/0x20b
+[  717.829052]  [<ffffffff813ccfd4>] __panic+0x1c3/0x45d
+[  717.834246]  [<ffffffff813cd339>] panic_saved_regs+0xcb/0xcb
+[  717.884627]  [<ffffffff816d0453>] watchdog+0x7d3/0xc60
+[  717.889922]  [<ffffffff8144c318>] kthread+0x348/0x420
+[  717.908785]  [<ffffffff84400266>] ret_from_fork+0x56/0x70
+[  717.915370] Kernel command line: oops=panic panic=10 io_delay=0xed libata.allow_tpm=1 nmi_watchdog=panic tco_start=1 quiet svm.nested=0 slab_nomerge acpi_enforce_resources=lax eagerfpu=on intel_iommu=optin scsi_mod.force_queue_depth=1,512:0 BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 workqueue.watchdog_thresh=140 io_delay=0xed libata.allow_tpm=1 tco_start=1 svm.nested=0 kvm-intel.nested=1 slab_nomerge acpi_enforce_resources=lax eagerfpu=on intel_iommu=optin scsi_mod.force_queue_depth=1,512:0 resched_latency_warn_ms=0
+[  717.970589] Kernel Offset: disabled
+[  717.974202] Microcode: 0x1
+[  717.977032] Task Info: processes: 134, tasks: 145, running: 26, iowait: 0
+[  717.983935] Uptime(seconds): 717.98
+[  717.987551] Linux syzkaller 4.15.0+ #0 SMP now x86_64 (none)
+[  717.993331] netdump-meta: 1|gti=46613caa56245d937d125fc7648f143698172f71
+[  718.000326] Rebooting in 86400 seconds..
diff --git a/pkg/report/testdata/linux/report/443 b/pkg/report/testdata/linux/report/443
new file mode 100644
index 000000000..2416de54d
--- /dev/null
+++ b/pkg/report/testdata/linux/report/443
@@ -0,0 +1,161 @@
+TITLE: INFO: task hung in rtnl_lock
+TYPE: HANG
+
+[  702.091171] INFO: task syz-executor.4:15720 blocked for more than 140 seconds.
+[  702.098581]       Not tainted 4.4.196+ #0
+[  702.138127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  702.180820] syz-executor.4  D ffff8801bc073040 27144 15720   2030 0x00000004
+[  702.188314]  ffff8801bc073040 ffff8800b9488d40 ffff8801bbad4840 ffff8801db61dd40
+[  702.267645]  ffff8801db61dd58 ffff8801bba979a0 ffffffff82a33b03 0000000000000246
+[  702.346846]  ffffffff832dc7a0 ffff8801bc073040 0000000000000000 00ff8801bc073818
+[  702.425892] Call Trace:
+[  702.471280]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  702.476501]  [<ffffffff82a358a5>] schedule_preempt_disabled+0x15/0x20
+[  702.519883]  [<ffffffff82a39184>] mutex_lock_nested+0x3f4/0x1480
+[  702.703168]  [<ffffffff822d37bc>] rtnl_lock+0x1c/0x20
+[  702.708393]  [<ffffffff8284ef58>] ipv6_route_ioctl+0x1f8/0x2b0
+[  702.801113]  [<ffffffff827ff2a0>] inet6_ioctl+0x110/0x1c0
+[  702.806685]  [<ffffffff8223859f>] sock_do_ioctl+0x6f/0xb0
+[  702.849029]  [<ffffffff82238831>] sock_ioctl+0x251/0x3d0
+[  702.897775]  [<ffffffff8156c6c1>] do_vfs_ioctl+0xa41/0xfe0
+[  703.037558]  [<ffffffff8156ccf4>] SyS_ioctl+0x94/0xc0
+[  703.079597]  [<ffffffff82a491cf>] tracesys_phase2+0x90/0x95
+[  703.121903] 1 lock held by syz-executor.4/15720:
+[  703.126701]  #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff822d37bc>] rtnl_lock+0x1c/0x20
+[  703.205848]   task                        PC stack   pid father
+[  703.247701] kworker/0:1     D ffff8801d9358040 26968    30      2 0x00000000
+[  703.326179] Workqueue: events proc_cleanup_work
+[  703.368060]  ffff8801d9358040 0000000000000000 ffff8800b9fc6040 ffff8801db61dd40
+[  703.448261]  ffff8801db61dd58 ffff8801d9377858 ffffffff82a33b03 ffffffff00000000
+[  703.527910]  0000000000120018[  703.530883] net_ratelimit: 7720 callbacks suppressed
+[  704.018316]  1ffff1003b26ef08 ffff8800b9fc6040 00ff8801d93778c8
+[  704.097007] Call Trace:
+[  704.142253]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  704.147472]  [<ffffffff82a46628>] schedule_timeout+0x3c8/0x690
+[  704.332399]  [<ffffffff82a37e71>] wait_for_completion+0x201/0x2d0
+[  704.388784]  [<ffffffff8123ee1c>] __wait_rcu_gp+0x14c/0x1d0
+[  704.431545]  [<ffffffff81244293>] synchronize_sched.part.0+0x83/0xa0
+[  704.532530]  [<ffffffff812486a8>] synchronize_sched+0xa8/0x130
+[  704.538535]  [<ffffffff8159530c>] kern_unmount+0x5c/0xd0
+[  704.580535]  [<ffffffff816891ec>] pid_ns_release_proc+0x3c/0x50
+[  704.624111]  [<ffffffff812e259e>] proc_cleanup_work+0x1e/0x30
+[  704.630028]  [<ffffffff8115ee3b>] process_one_work+0x7cb/0x15a0
+[  704.722882]  [<ffffffff81160141>] worker_thread+0x531/0x1010
+[  704.777708]  [<ffffffff8116e42d>] kthread+0x27d/0x310
+[  705.018397]  [<ffffffff82a494be>] ret_from_fork+0x4e/0x80
+[  705.068308] kworker/0:2     D ffff8800b9fc6040 27400   433      2 0x00000000
+[  705.146350] Workqueue: events proc_cleanup_work
+[  705.188269]  ffff8800b9fc6040 0000000000000000 ffff8800a7c5c840 ffff8801db61dd40
+[  705.267575]  ffff8801db61dd58 ffff8800b9f27858 ffffffff82a33b03 ffffffff00000000
+[  705.348023]  0000000000120018 1ffff100173e4f08 ffff8800a7c5c840 00ff8800b9f278c8
+[  705.428313] Call Trace:
+[  705.467276] <Same stack as pid 30>
+[  705.506547] kworker/0:3     D ffff8801c6a93040 29592  2098      2 0x00000000
+[  705.549561] Workqueue: events proc_cleanup_work
+[  705.591176]  ffff8801c6a93040 0000000000000000 ffff8801bba86040 ffff8801db61dd40
+[  705.599224]  ffff8801db61dd58 ffff8801c605f858 ffffffff82a33b03 ffffffff00000000
+[  705.679278]  0000000000120018 1ffff10038c0bf08 ffff8801bba86040 00ff8801c605f8c8
+[  705.759116] Call Trace:
+[  705.797838] <Same stack as pid 30>
+[  705.837532] syz-executor.4  D ffff8801c3eec840 29320  4989   2030 0x00000002
+[  705.916670]  ffff8801c3eec840 0000000000000000 ffff8801d9c36040 ffff8801db61dd40
+[  705.960191]  ffff8801db61dd58 ffff8801c2a87770 ffffffff82a33b03 0000000000000246
+[  706.076952]  ffffffff832dc7a0 ffff8801c3eec840 0000000000000000 00ff8801c3eed018
+[  706.156407] Call Trace:
+[  706.201971]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  706.207219]  [<ffffffff82a358a5>] schedule_preempt_disabled+0x15/0x20
+[  706.251027]  [<ffffffff82a39184>] mutex_lock_nested+0x3f4/0x1480
+[  706.437235]  [<ffffffff81380478>] perf_trace_destroy+0x28/0x100
+[  706.480333]  [<ffffffff813b59c6>] tp_perf_event_destroy+0x16/0x20
+[  706.529630]  [<ffffffff813d1dbe>] _free_event+0x25e/0xd70
+[  706.572324]  [<ffffffff813d2b37>] put_event+0x267/0x390
+[  706.664382]  [<ffffffff813d2cb7>] perf_release+0x37/0x50
+[  706.669856]  [<ffffffff815351ce>] __fput+0x24e/0x7a0
+[  706.712164]  [<ffffffff815357ab>] ____fput+0x1b/0x20
+[  706.717307]  [<ffffffff81169707>] task_work_run+0x207/0x2b0
+[  706.759744]  [<ffffffff811155b2>] do_exit+0x8d2/0x29c0
+[  706.851813]  [<ffffffff81117826>] do_group_exit+0x116/0x330
+[  706.857576]  [<ffffffff81139d06>] get_signal+0x396/0x1ca0
+[  706.901069]  [<ffffffff8100b532>] do_signal+0x92/0x17c0
+[  707.087594]  [<ffffffff81002950>] exit_to_usermode_loop+0xc0/0x150
+[  707.130741]  [<ffffffff8100541a>] syscall_return_slowpath+0x21a/0x260
+[  707.137434]  [<ffffffff82a491f9>] int_ret_from_sys_call+0x25/0xa3
+[  707.180335] syz-executor.4  D ffff8801c3fa0040 29080  5725   2030 0x00000002
+[  707.258728]  ffff8801c3fa0040 0000000000000000 ffff8801da3d1840 ffff8801db61dd40
+[  707.339410]  ffff8801db61dd58 ffff8800bb72f770 ffffffff82a33b03 0000000000000246
+[  707.419611]  ffffffff832dc7a0 ffff8801c3fa0040 0000000000000000 00ff8801c3fa0818
+[  707.500215] Call Trace:
+[  707.539066] <Same stack as pid 4989>
+[  707.578789] syz-executor.2  D ffff8801c1303040 29112  6109   2029 0x00000002
+[  707.657675]  ffff8801c1303040 0000000000000000 ffff8801c2171840 ffff8801db71dd40
+[  707.738339]  ffff8801db71dd58 ffff8800b961f810 ffffffff82a33b03 0000000000000246
+[  707.817373]  ffffffff832dc7a0 ffff8801c1303040 0000000000000000 00ff8801c1303818
+[  707.898139] Call Trace:
+[  707.979988]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  708.022301]  [<ffffffff82a358a5>] schedule_preempt_disabled+0x15/0x20
+[  708.028926]  [<ffffffff82a39184>] mutex_lock_nested+0x3f4/0x1480
+[  708.162451]  [<ffffffff822d37bc>] rtnl_lock+0x1c/0x20
+[  708.167665]  [<ffffffff820838fe>] tun_chr_close+0x3e/0x60
+[  708.210017]  [<ffffffff815351ce>] __fput+0x24e/0x7a0
+[  708.252037]  [<ffffffff815357ab>] ____fput+0x1b/0x20
+[  708.257169]  [<ffffffff81169707>] task_work_run+0x207/0x2b0
+[  708.299552]  [<ffffffff811155b2>] do_exit+0x8d2/0x29c0
+[  708.391636]  [<ffffffff81117826>] do_group_exit+0x116/0x330
+[  708.397376]  [<ffffffff81139d06>] get_signal+0x396/0x1ca0
+[  708.439563]  [<ffffffff8100b532>] do_signal+0x92/0x17c0
+[  709.009167]  [<ffffffff81002950>] exit_to_usermode_loop+0xc0/0x150
+[  709.052114]  [<ffffffff8100541a>] syscall_return_slowpath+0x21a/0x260
+[  709.058730]  [<ffffffff82a491f9>] int_ret_from_sys_call+0x25/0xa3
+[  709.101959] syz-executor.4  D ffff8801c2173040 28520  7596   2030 0x00000002
+[  709.109484]  ffff8801c2173040 0000000000000000 ffff8801da3d1840 ffff8801db61dd40
+[  709.189245]  ffff8801db61dd58 ffff8801c12bf598 ffffffff82a33b03 ffffffff00000000
+[  709.269153]  1ffff10038257eaf ffff8801c12bf880 ffff8801c12bf600 00ffffff811ffa48
+[  709.349148] Call Trace:
+[  709.429955]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  709.472028]  [<ffffffff82a46628>] schedule_timeout+0x3c8/0x690
+[  709.620056]  [<ffffffff82a37e71>] wait_for_completion+0x201/0x2d0
+[  709.751089]  [<ffffffff8123ee1c>] __wait_rcu_gp+0x14c/0x1d0
+[  709.756832]  [<ffffffff81244293>] synchronize_sched.part.0+0x83/0xa0
+[  709.894299]  [<ffffffff812486a8>] synchronize_sched+0xa8/0x130
+[  709.900333]  [<ffffffff8137f8b5>] perf_trace_event_unreg.isra.0+0xb5/0x1e0
+[  709.944353]  [<ffffffff81380511>] perf_trace_destroy+0xc1/0x100
+[  709.950448]  [<ffffffff813b59c6>] tp_perf_event_destroy+0x16/0x20
+[  709.999890]  [<ffffffff813d1dbe>] _free_event+0x25e/0xd70
+[  710.049297]  [<ffffffff813d2b37>] put_event+0x267/0x390
+[  710.141579]  [<ffffffff813d2cb7>] perf_release+0x37/0x50
+[  710.147065]  [<ffffffff815351ce>] __fput+0x24e/0x7a0
+[  710.188676]  [<ffffffff815357ab>] ____fput+0x1b/0x20
+[  710.230857]  [<ffffffff81169707>] task_work_run+0x207/0x2b0
+[  710.236611]  [<ffffffff811155b2>] do_exit+0x8d2/0x29c0
+[  710.328349]  [<ffffffff81117826>] do_group_exit+0x116/0x330
+[  710.371187]  [<ffffffff81139d06>] get_signal+0x396/0x1ca0
+[  710.376760]  [<ffffffff8100b532>] do_signal+0x92/0x17c0
+[  710.560018]  [<ffffffff81002950>] exit_to_usermode_loop+0xc0/0x150
+[  710.603248]  [<ffffffff8100541a>] syscall_return_slowpath+0x21a/0x260
+[  710.610560]  [<ffffffff82a491f9>] int_ret_from_sys_call+0x25/0xa3
+[  710.692234] syz-executor.0  D ffff8801c138b040 29160  9727   2032 0x00000002
+[  710.700026]  ffff8801c138b040 0000000000000000 ffff8801c2a41840 ffff8801db71dd40
+[  710.780194]  ffff8801db71dd58 ffff8800a7f7f7a0 ffffffff82a33b03 0000000000000246
+[  710.860167]  ffffffff832dc7a0 ffff8801c138b040 0000000000000001 00ff8801c138b818
+[  710.939597] Call Trace:
+[  711.020737]  [<ffffffff82a350bb>] schedule+0x9b/0x1c0
+[  711.025969]  [<ffffffff82a358a5>] schedule_preempt_disabled+0x15/0x20
+[  711.069526]  [<ffffffff82a39184>] mutex_lock_nested+0x3f4/0x1480
+[  711.167967]  [<ffffffff822d37bc>] rtnl_lock+0x1c/0x20
+[  711.209783]  [<ffffffff828972c5>] ipv6_sock_mc_close+0xb5/0xf0
+[  711.252724]  [<ffffffff827fefe8>] inet6_release+0x48/0x80
+[  711.258291]  [<ffffffff8223822a>] __sock_release+0xda/0x2c0
+[  711.307304]  [<ffffffff82238430>] sock_close+0x20/0x30
+[  711.349441]  [<ffffffff815351ce>] __fput+0x24e/0x7a0
+[  711.391570]  [<ffffffff815357ab>] ____fput+0x1b/0x20
+[  711.396712]  [<ffffffff81169707>] task_work_run+0x207/0x2b0
+[  711.439503]  [<ffffffff811155b2>] do_exit+0x8d2/0x29c0
+[  711.530713]  [<ffffffff81117826>] do_group_exit+0x116/0x330
+[  711.536464]  [<ffffffff81139d06>] get_signal+0x396/0x1ca0
+[  711.579118]  [<ffffffff8100b532>] do_signal+0x92/0x17c0
+[  711.727280]  [<ffffffff81002950>] exit_to_usermode_loop+0xc0/0x150
+[  711.770433]  [<ffffffff8100541a>] syscall_return_slowpath+0x21a/0x260
+[  711.817120]  [<ffffffff82a491f9>] int_ret_from_sys_call+0x25/0xa3
+[  711.860511] syz-executor.0  D ffff8800a7f88040 29400  9733   2032 0x00000002
+[  711.939081]  ffff8800a7f88040 0000000000000000 ffff8801c3d93040 ffff8801db71dd40
+[  712.018817]  ffff8801db71dd58 ffff8800a6f877a0 ffffffff82a33b03 0000000000000246
diff --git a/pkg/report/testdata/linux/report/444 b/pkg/report/testdata/linux/report/444
new file mode 100644
index 000000000..6ad790f8b
--- /dev/null
+++ b/pkg/report/testdata/linux/report/444
@@ -0,0 +1,23 @@
+TITLE: INFO: task hung in rtnl_lock
+TYPE: HANG
+
+[  715.843349] INFO: task kworker/u4:0:5 blocked for more than 140 seconds.
+[  715.850238]       Not tainted 4.15.0 #0
+[  715.855356] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  715.863375] kworker/u4:0    D 8064     5      2 0x90000000 437968653576
+[  715.870148] Workqueue: netns cleanup_net
+[  715.874223] Call Trace:
+[  715.876816]  [<ffffffff8147436f>] context_switch+0x60f/0xa60
+[  715.882617]  [<ffffffff8100095a>] __schedule+0x5aa/0x1da0
+[  715.894058]  [<ffffffff810021df>] schedule+0x8f/0x1b0
+[  715.899248]  [<ffffffff81002a80>] schedule_preempt_disabled+0x10/0x20
+[  715.905933]  [<ffffffff810075ad>] __mutex_lock+0x82d/0x1430
+[  715.960323]  [<ffffffff810081c6>] mutex_lock_nested+0x16/0x20
+[  715.972316]  [<ffffffff83a7b4b7>] rtnl_lock+0x17/0x20
+[  715.977535]  [<ffffffff83bd0c35>] nat_exit_net+0x25/0x380
+[  715.989126]  [<ffffffff839fbbc5>] ops_exit_list.isra.0+0x105/0x160
+[  715.995473]  [<ffffffff839fd438>] cleanup_net+0x4d8/0xa20
+[  716.012922]  [<ffffffff814338f6>] process_one_work+0x886/0x1650
+[  716.043399]  [<ffffffff81434d13>] worker_thread+0x653/0x1150
+[  716.049197]  [<ffffffff8144c478>] kthread+0x348/0x420
+[  716.067875]  [<ffffffff84400273>] ret_from_fork+0x63/0x70
diff --git a/pkg/report/testdata/linux/report/445 b/pkg/report/testdata/linux/report/445
new file mode 100644
index 000000000..92aa1a598
--- /dev/null
+++ b/pkg/report/testdata/linux/report/445
@@ -0,0 +1,176 @@
+TITLE: INFO: task hung in synchronize_rcu
+TYPE: HANG
+
+[  341.326285][ T1070] INFO: task kworker/u4:0:7 blocked for more than 143 seconds.
+[  341.334129][ T1070]       Not tainted 5.4.0-rc1+ #0
+[  341.339263][ T1070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  341.348009][ T1070] kworker/u4:0    D24128     7      2 0x80004000
+[  341.354425][ T1070] Workqueue: netns cleanup_net
+[  341.359309][ T1070] Call Trace:
+[  341.362623][ T1070]  __schedule+0x94f/0x1e70
+[  341.388635][ T1070]  schedule+0xd9/0x260
+[  341.392727][ T1070]  synchronize_rcu_expedited+0x57f/0x5f0
+[  341.430800][ T1070]  synchronize_net+0x3b/0x60
+[  341.435406][ T1070]  rollback_registered_many+0x66e/0x10d0
+[  341.456923][ T1070]  unregister_netdevice_many.part.0+0x1b/0x1f0
+[  341.463085][ T1070]  unregister_netdevice_many+0x3b/0x50
+[  341.468639][ T1070]  vti6_exit_batch_net+0x467/0x690
+[  341.484291][ T1070]  ops_exit_list.isra.0+0xfc/0x150
+[  341.489541][ T1070]  cleanup_net+0x4e2/0xa60
+[  341.515822][ T1070]  process_one_work+0x9af/0x1740
+[  341.531189][ T1070]  worker_thread+0x98/0xe40
+[  341.535684][ T1070]  kthread+0x361/0x430
+[  341.551682][ T1070]  ret_from_fork+0x24/0x30
+[  341.556517][ T1070] INFO: task syz-executor.2:11340 blocked for more than 143 seconds.
+[  341.564599][ T1070]       Not tainted 5.4.0-rc1+ #0
+[  341.569944][ T1070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  341.578678][ T1070] syz-executor.2  D26840 11340   9045 0x00000004
+[  341.585308][ T1070] Call Trace:
+[  341.589021][ T1070]  __schedule+0x94f/0x1e70
+[  341.608410][ T1070]  schedule+0xd9/0x260
+[  341.612503][ T1070]  schedule_preempt_disabled+0x13/0x20
+[  341.618048][ T1070]  __mutex_lock+0x7b0/0x13c0
+[  341.655109][ T1070]  mutex_lock_nested+0x16/0x20
+[  341.669351][ T1070]  rtnl_lock+0x17/0x20
+[  341.673800][ T1070]  dev_ioctl+0x1a4/0xc60
+[  341.678151][ T1070]  sock_do_ioctl+0x1b7/0x2f0
+[  341.700868][ T1070]  sock_ioctl+0x3ed/0x780
+[  341.714803][ T1070]  do_vfs_ioctl+0xdb6/0x13e0
+[  341.755193][ T1070]  ksys_ioctl+0xab/0xd0
+[  341.759416][ T1070]  __x64_sys_ioctl+0x73/0xb0
+[  341.764020][ T1070]  do_syscall_64+0xfa/0x760
+[  341.768703][ T1070]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  341.774727][ T1070] RIP: 0033:0x459a59
+[  341.778705][ T1070] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
+[  341.798496][ T1070] RSP: 002b:00007f2916a67c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[  341.807774][ T1070] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[  341.816119][ T1070] RDX: 0000000020000440 RSI: 0000000000008914 RDI: 0000000000000008
+[  341.824111][ T1070] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
+[  341.832203][ T1070] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2916a686d4
+[  341.840257][ T1070] R13: 00000000004cdab8 R14: 00000000004d7280 R15: 00000000ffffffff
+[  341.848302][ T1070] INFO: task syz-executor.2:11346 blocked for more than 143 seconds.
+[  341.856427][ T1070]       Not tainted 5.4.0-rc1+ #0
+[  341.861441][ T1070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  341.870141][ T1070] syz-executor.2  D29712 11346   9045 0x00004004
+[  341.876516][ T1070] Call Trace:
+[  341.879795][ T1070]  __schedule+0x94f/0x1e70
+[  341.899171][ T1070]  schedule+0xd9/0x260
+[  341.903255][ T1070]  schedule_preempt_disabled+0x13/0x20
+[  341.908785][ T1070]  __mutex_lock+0x7b0/0x13c0
+[  341.939521][ T1070]  mutex_lock_nested+0x16/0x20
+[  341.953849][ T1070]  rtnl_lock+0x17/0x20
+[  341.958012][ T1070]  dev_ioctl+0x1a4/0xc60
+[  341.962335][ T1070]  sock_do_ioctl+0x1b7/0x2f0
+[  341.984685][ T1070]  sock_ioctl+0x3ed/0x780
+[  341.998692][ T1070]  do_vfs_ioctl+0xdb6/0x13e0
+[  342.038975][ T1070]  ksys_ioctl+0xab/0xd0
+[  342.043130][ T1070]  __x64_sys_ioctl+0x73/0xb0
+[  342.047792][ T1070]  do_syscall_64+0xfa/0x760
+[  342.052299][ T1070]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  342.058261][ T1070] RIP: 0033:0x459a59
+[  342.062242][ T1070] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
+[  342.081924][ T1070] RSP: 002b:00007f2916a46c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[  342.090416][ T1070] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[  342.098476][ T1070] RDX: 0000000020000a00 RSI: 0000000000008914 RDI: 0000000000000008
+[  342.106641][ T1070] RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
+[  342.114727][ T1070] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2916a476d4
+[  342.122790][ T1070] R13: 00000000004cdab8 R14: 00000000004d7280 R15: 00000000ffffffff
+[  342.130878][ T1070] INFO: task syz-executor.2:11358 blocked for more than 144 seconds.
+[  342.139017][ T1070]       Not tainted 5.4.0-rc1+ #0
+[  342.144032][ T1070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  342.153041][ T1070] syz-executor.2  D29712 11358   9045 0x00004004
+[  342.159601][ T1070] Call Trace:
+[  342.163011][ T1070]  __schedule+0x94f/0x1e70
+[  342.182445][ T1070]  schedule+0xd9/0x260
+[  342.186768][ T1070]  schedule_preempt_disabled+0x13/0x20
+[  342.192260][ T1070]  __mutex_lock+0x7b0/0x13c0
+[  342.229368][ T1070]  mutex_lock_nested+0x16/0x20
+[  342.243372][ T1070]  rtnl_lock+0x17/0x20
+[  342.247502][ T1070]  dev_ioctl+0x1a4/0xc60
+[  342.251743][ T1070]  sock_do_ioctl+0x1b7/0x2f0
+[  342.274080][ T1070]  sock_ioctl+0x3ed/0x780
+[  342.288068][ T1070]  do_vfs_ioctl+0xdb6/0x13e0
+[  342.328606][ T1070]  ksys_ioctl+0xab/0xd0
+[  342.332786][ T1070]  __x64_sys_ioctl+0x73/0xb0
+[  342.337455][ T1070]  do_syscall_64+0xfa/0x760
+[  342.341961][ T1070]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  342.347916][ T1070] RIP: 0033:0x459a59
+[  342.351831][ T1070] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <90> 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
+[  342.372839][ T1070] RSP: 002b:00007f2916a25c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+[  342.381736][ T1070] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59
+[  342.389858][ T1070] RDX: 0000000020000a00 RSI: 0000000000008914 RDI: 0000000000000008
+[  342.398065][ T1070] RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
+[  342.406233][ T1070] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2916a266d4
+[  342.414214][ T1070] R13: 00000000004cdab8 R14: 00000000004d7280 R15: 00000000ffffffff
+[  342.422298][ T1070] INFO: task syz-executor.5:11347 blocked for more than 144 seconds.
+[  342.430465][ T1070]       Not tainted 5.4.0-rc1+ #0
+[  342.435826][ T1070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  342.444575][ T1070] syz-executor.5  D27808 11347      1 0x00000004
+[  342.451109][ T1070] Call Trace:
+[  342.454395][ T1070]  __schedule+0x94f/0x1e70
+[  342.474047][ T1070]  schedule+0xd9/0x260
+[  342.478174][ T1070]  schedule_preempt_disabled+0x13/0x20
+[  342.483639][ T1070]  __mutex_lock+0x7b0/0x13c0
+[  342.525811][ T1070]  mutex_lock_nested+0x16/0x20
+[  342.535721][ T1070]  rtnetlink_rcv_msg+0x40a/0xb00
+[  342.561330][ T1070]  netlink_rcv_skb+0x177/0x450
+[  342.586580][ T1070]  rtnetlink_rcv+0x1d/0x30
+[  342.591008][ T1070]  netlink_unicast+0x531/0x710
+[  342.618357][ T1070]  netlink_sendmsg+0x8a5/0xd60
+[  342.656622][ T1070]  sock_sendmsg+0xd7/0x130
+[  342.661184][ T1070]  __sys_sendto+0x262/0x380
+[  342.715080][ T1070]  __x64_sys_sendto+0xe1/0x1a0
+[  342.719887][ T1070]  do_syscall_64+0xfa/0x760
+[  342.724392][ T1070]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
+[  342.730506][ T1070] RIP: 0033:0x4138a3
+[  342.734517][ T1070] Code: f7 f6 4c 89 ea 4c 8d 68 ff 49 0f af f5 48 03 73 08 48 c1 ee 03 4c 89 f8 e9 3a fd ff ff 4d 89 e6 e9 21 fd ff ff 49 89 d3 49 89 <c5> 48 89 c8 4c 89 c1 e9 f3 fc ff ff 4d 8d 71 07 49 c1 ee 03 4d 8d
+[  342.754435][ T1070] RSP: 002b:00007ffc9c9a0e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
+[  342.762947][ T1070] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004138a3
+[  342.770981][ T1070] RDX: 0000000000000028 RSI: 0000000000a70070 RDI: 0000000000000003
+[  342.779037][ T1070] RBP: 00007ffc9c9a0ef0 R08: 00007ffc9c9a0e90 R09: 000000000000000c
+[  342.787100][ T1070] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
+[  342.795397][ T1070] R13: 00007ffc9c9a11f8 R14: 0000000000000000 R15: 0000000000000000
+[  342.803965][ T1070] 
+[  342.803965][ T1070] Showing all locks held in the system:
+[  342.811958][ T1070] 4 locks held by kworker/u4:0/7:
+[  342.817029][ T1070]  #0: ffff8880a999be68 ((wq_completion)netns){+.+.}, at: process_one_work+0x88b/0x1740
+[  342.826986][ T1070]  #1: ffff8880a9897dc0 (net_cleanup_work){+.+.}, at: process_one_work+0x8c1/0x1740
+[  342.836499][ T1070]  #2: ffffffff89997088 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0xa60
+[  342.845276][ T1070]  #3: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  342.853538][ T1070] 1 lock held by khungtaskd/1070:
+[  342.858617][ T1070]  #0: ffffffff88faaf80 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
+[  342.868133][ T1070] 2 locks held by getty/8997:
+[  342.872799][ T1070]  #0: ffff88809c5a8b90 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.881777][ T1070]  #1: ffffc90005f1d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  342.891418][ T1070] 2 locks held by getty/8998:
+[  342.896124][ T1070]  #0: ffff88809b74aad0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.905082][ T1070]  #1: ffffc90005f412e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  342.914822][ T1070] 2 locks held by getty/8999:
+[  342.919556][ T1070]  #0: ffff88809c561350 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.928599][ T1070]  #1: ffffc90005f212e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  342.938274][ T1070] 2 locks held by getty/9000:
+[  342.942965][ T1070]  #0: ffff88808e085250 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.951976][ T1070]  #1: ffffc90005f292e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  342.961798][ T1070] 2 locks held by getty/9001:
+[  342.966533][ T1070]  #0: ffff888087bad390 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.975504][ T1070]  #1: ffffc90005f352e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  342.985387][ T1070] 2 locks held by getty/9002:
+[  342.990256][ T1070]  #0: ffff88809b74a250 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  342.999580][ T1070]  #1: ffffc90005f3d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  343.009376][ T1070] 2 locks held by getty/9003:
+[  343.014179][ T1070]  #0: ffff88808c518110 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
+[  343.023207][ T1070]  #1: ffffc90005f112e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10
+[  343.033016][ T1070] 3 locks held by kworker/1:4/9051:
+[  343.038406][ T1070]  #0: ffff88809c8eabe8 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x88b/0x1740
+[  343.048919][ T1070]  #1: ffff888070f37dc0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8c1/0x1740
+[  343.058826][ T1070]  #2: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  343.067030][ T1070] 1 lock held by syz-executor.2/11340:
+[  343.072492][ T1070]  #0: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  343.080648][ T1070] 1 lock held by syz-executor.2/11346:
+[  343.086307][ T1070]  #0: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  343.094312][ T1070] 1 lock held by syz-executor.2/11358:
+[  343.100194][ T1070]  #0: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20
+[  343.108528][ T1070] 1 lock held by syz-executor.5/11347:
+[  343.113991][ T1070]  #0: ffffffff899a4320 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00
+[  343.122991][ T1070] 
+[  343.125330][ T1070] =============================================
diff --git a/pkg/report/testdata/linux/report/72 b/pkg/report/testdata/linux/report/72
index b7df9b1ac..f54f138db 100644
--- a/pkg/report/testdata/linux/report/72
+++ b/pkg/report/testdata/linux/report/72
@@ -1,4 +1,4 @@
-TITLE: INFO: task hung in ieee80211_unregister_hw
+TITLE: INFO: task hung in rtnl_lock
 TYPE: HANG
 
 [  981.809015] INFO: task kworker/0:1:764 blocked for more than 120 seconds.