pkg/report: add few tests where we mis-detect title/guilty file

3 files changed, 432 insertions, 0 deletions

diff --git a/pkg/report/testdata/linux/guilty/26 b/pkg/report/testdata/linux/guilty/26
new file mode 100644
index 000000000..5301d3e66
--- /dev/null
+++ b/pkg/report/testdata/linux/guilty/26
@@ -0,0 +1,94 @@
+# TODO: this must be attributed to net/xfrm/xfrm_policy.c.
+FILE: kernel/time/tick-sched.c
+
+Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
+INFO: rcu_sched detected stalls on CPUs/tasks:
+        (detected by 0, t=125007 jiffies, g=66299, c=66298, q=40)
+All QSes seen, last rcu_sched kthread activity 125014 (4294991138-4294866124), jiffies_till_next_fqs=3, root ->qsmask 0x0
+syz-executor5   R  running task    22056 22277   3688 0x00000008
+Call Trace:
+ <IRQ>
+ sched_show_task+0x4a3/0x5e0 kernel/sched/core.c:5198
+ print_other_cpu_stall+0x996/0x1090 kernel/rcu/tree.c:1564
+ check_cpu_stall.isra.61+0x6e6/0x15b0 kernel/rcu/tree.c:1682
+ __rcu_pending kernel/rcu/tree.c:3440 [inline]
+ rcu_pending kernel/rcu/tree.c:3502 [inline]
+ rcu_check_callbacks+0x256/0xd00 kernel/rcu/tree.c:2842
+ update_process_times+0x30/0x60 kernel/time/timer.c:1630
+ tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
+ tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1166
+ __run_hrtimer kernel/time/hrtimer.c:1211 [inline]
+ __hrtimer_run_queues+0x358/0xe20 kernel/time/hrtimer.c:1275
+ hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1309
+ local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
+ smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
+ apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:904
+RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50
+RSP: 0018:ffff8801db206738 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff11
+RAX: ffffed003a2965e3 RBX: ffff8801d14b2e40 RCX: ffffffff84c25899
+RDX: 0000000000000100 RSI: ffff8801c5f47f29 RDI: 00000000000079c8
+RBP: ffff8801db2067c8 R08: ffffed0038bea003 R09: ffffed0038bea003
+R10: 000000000000000b R11: ffffed0038bea002 R12: ffff8801c5f40580
+R13: ffff8801db206aa0 R14: 00000000000079d0 R15: dffffc0000000000
+ __xfrm_decode_session+0x68/0x110 net/xfrm/xfrm_policy.c:2358
+ __xfrm_policy_check+0x18c/0x2350 net/xfrm/xfrm_policy.c:2393
+ __xfrm_policy_check2 include/net/xfrm.h:1170 [inline]
+ xfrm_policy_check include/net/xfrm.h:1175 [inline]
+ xfrm6_policy_check include/net/xfrm.h:1185 [inline]
+ rawv6_rcv+0x8f6/0x1200 net/ipv6/raw.c:424
+ ipv6_raw_deliver net/ipv6/raw.c:224 [inline]
+ raw6_local_deliver+0x819/0xa80 net/ipv6/raw.c:240
+ ip6_input_finish+0x3c7/0x17a0 net/ipv6/ip6_input.c:246
+ NF_HOOK include/linux/netfilter.h:250 [inline]
+ ip6_input+0xe9/0x560 net/ipv6/ip6_input.c:327
+ dst_input include/net/dst.h:449 [inline]
+ ip6_rcv_finish+0x1a9/0x7a0 net/ipv6/ip6_input.c:71
+ NF_HOOK include/linux/netfilter.h:250 [inline]
+ ipv6_rcv+0xf37/0x1fa0 net/ipv6/ip6_input.c:208
+ __netif_receive_skb_core+0x1a41/0x3460 net/core/dev.c:4499
+ __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4564
+ process_backlog+0x203/0x740 net/core/dev.c:5244
+ napi_poll net/core/dev.c:5642 [inline]
+ net_rx_action+0x792/0x1910 net/core/dev.c:5708
+ __do_softirq+0x2d7/0xb85 kernel/softirq.c:285
+ do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1115
+ </IRQ>
+ do_softirq.part.21+0x14d/0x190 kernel/softirq.c:329
+ do_softirq kernel/softirq.c:177 [inline]
+ __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:182
+ local_bh_enable include/linux/bottom_half.h:32 [inline]
+ rcu_read_unlock_bh include/linux/rcupdate.h:727 [inline]
+ ip6_finish_output2+0xba0/0x23a0 net/ipv6/ip6_output.c:121
+ ip6_fragment+0x25f2/0x3470 net/ipv6/ip6_output.c:739
+ ip6_finish_output+0x6bb/0xaf0 net/ipv6/ip6_output.c:152
+ NF_HOOK_COND include/linux/netfilter.h:239 [inline]
+ ip6_output+0x1eb/0x840 net/ipv6/ip6_output.c:171
+ dst_output include/net/dst.h:443 [inline]
+ ip6_local_out+0x95/0x160 net/ipv6/output_core.c:176
+ ip6_send_skb+0xa1/0x330 net/ipv6/ip6_output.c:1674
+ ip6_push_pending_frames+0xb3/0xe0 net/ipv6/ip6_output.c:1694
+ rawv6_push_pending_frames net/ipv6/raw.c:616 [inline]
+ rawv6_sendmsg+0x2ee9/0x3e70 net/ipv6/raw.c:935
+ inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764
+ sock_sendmsg_nosec net/socket.c:628 [inline]
+ sock_sendmsg+0xca/0x110 net/socket.c:638
+ SYSC_sendto+0x361/0x5c0 net/socket.c:1719
+ SyS_sendto+0x40/0x50 net/socket.c:1687
+ entry_SYSCALL_64_fastpath+0x23/0x9a
+RIP: 0033:0x452ac9
+RSP: 002b:00007f042a550c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
+RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
+RDX: 0000000000000000 RSI: 0000000020aa7000 RDI: 0000000000000013
+RBP: 00000000000004b6 R08: 00000000201e0000 R09: 000000000000001c
+R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f51b0
+R13: 00000000ffffffff R14: 00007f042a5516d4 R15: 0000000000000000
+rcu_sched kthread starved for 126236 jiffies! g66299 c66298 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
+rcu_sched       R  running task    23456     8      2 0x80000000
+Call Trace:
+ context_switch kernel/sched/core.c:2799 [inline]
+ __schedule+0x8eb/0x2060 kernel/sched/core.c:3375
+ schedule+0xf5/0x430 kernel/sched/core.c:3434
+ schedule_timeout+0x118/0x230 kernel/time/timer.c:1795
+ rcu_gp_kthread+0x9e5/0x1930 kernel/rcu/tree.c:2314
+ kthread+0x33c/0x400 kernel/kthread.c:238
+ ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:515
diff --git a/pkg/report/testdata/linux/guilty/27 b/pkg/report/testdata/linux/guilty/27
new file mode 100644
index 000000000..63d999ce3
--- /dev/null
+++ b/pkg/report/testdata/linux/guilty/27
@@ -0,0 +1,57 @@
+# TODO: this must be attributed to sound/core/oss/mulaw.c.
+FILE: kernel/time/tick-sched.c
+
+INFO: rcu_sched detected stalls on CPUs/tasks:
+        (detected by 0, t=125002 jiffies, g=15654, c=15653, q=133)
+All QSes seen, last rcu_sched kthread activity 125002 (4294863411-4294738409), jiffies_till_next_fqs=3, root ->qsmask 0x0
+syz-executor1   R  running task    24936 11943   3739 0x0000000c
+Call Trace:
+ <IRQ>
+ sched_show_task+0x4a3/0x5e0 kernel/sched/core.c:5198
+ print_other_cpu_stall+0x996/0x1090 kernel/rcu/tree.c:1564
+ check_cpu_stall.isra.61+0x6e6/0x15b0 kernel/rcu/tree.c:1682
+ __rcu_pending kernel/rcu/tree.c:3440 [inline]
+ rcu_pending kernel/rcu/tree.c:3502 [inline]
+ rcu_check_callbacks+0x256/0xd00 kernel/rcu/tree.c:2842
+ update_process_times+0x30/0x60 kernel/time/timer.c:1628
+ tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
+ tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1194
+ __run_hrtimer kernel/time/hrtimer.c:1211 [inline]
+ __hrtimer_run_queues+0x358/0xe20 kernel/time/hrtimer.c:1275
+ hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1309
+ local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
+ smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
+ apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:920
+ </IRQ>
+RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:30 [inline]
+RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline]
+RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline]
+RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline]
+RIP: 0010:check_memory_region+0x38/0x190 mm/kasan/kasan.c:267
+RSP: 0000:ffff8801bd2ff868 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff11
+RAX: ffff7fffffffffff RBX: ffffc9000160020b RCX: ffffffff841fceaf
+RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffffc9000160020a
+RBP: ffff8801bd2ff878 R08: ffffc9000160020a R09: dffffc0000000000
+R10: 0000000000000001 R11: ffffed0037a5ff2e R12: ffffc9000160020a
+R13: ffff8801bd2ff970 R14: dffffc0000000000 R15: ffffc9000160020a
+ memcpy+0x37/0x50 mm/kasan/kasan.c:303
+ memcpy include/linux/string.h:344 [inline]
+ cvt_s16_to_native sound/core/oss/mulaw.c:164 [inline]
+ mulaw_decode+0x52f/0x770 sound/core/oss/mulaw.c:195
+ mulaw_transfer+0x222/0x270 sound/core/oss/mulaw.c:273
+ snd_pcm_plug_write_transfer+0x22d/0x420 sound/core/oss/pcm_plugin.c:611
+ snd_pcm_oss_write2+0x260/0x420 sound/core/oss/pcm_oss.c:1311
+ snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1372 [inline]
+ snd_pcm_oss_write+0x5fe/0x830 sound/core/oss/pcm_oss.c:2646
+ __vfs_write+0xef/0x970 fs/read_write.c:480
+ vfs_write+0x189/0x510 fs/read_write.c:544
+ SYSC_write fs/read_write.c:589 [inline]
+ SyS_write+0xef/0x220 fs/read_write.c:581
+ entry_SYSCALL_64_fastpath+0x23/0x9a
+RIP: 0033:0x452ac9
+RSP: 002b:00007fa354a13c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
+RAX: ffffffffffffffda RBX: cccccccccccccccd RCX: 0000000000452ac9
+RDX: 00000000fffffeb2 RSI: 0000000020083fc6 RDI: 0000000000000014
+RBP: 00000000000005b5 R08: 0000000000000000 R09: 0000000000000000
+R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6998
+R13: 00000000ffffffff R14: 00007fa354a146d4 R15: 0000000000000000
diff --git a/pkg/report/testdata/linux/report/145 b/pkg/report/testdata/linux/report/145
new file mode 100644
index 000000000..9f5cecbb2
--- /dev/null
+++ b/pkg/report/testdata/linux/report/145
@@ -0,0 +1,281 @@
+# TODO: this must be "INFO: rcu detected stall in __xfrm_decode_session"
+TITLE: INFO: rcu detected stall in do_softirq
+
+[  323.830017] INFO: rcu_sched detected stalls on CPUs/tasks:
+[  323.835676] 	(detected by 0, t=125007 jiffies, g=66299, c=66298, q=40)
+[  323.842315] All QSes seen, last rcu_sched kthread activity 125014 (4294991138-4294866124), jiffies_till_next_fqs=3, root ->qsmask 0x0
+[  323.854420] syz-executor5   R  running task    22056 22277   3688 0x00000008
+[  323.861597] Call Trace:
+[  323.864155]  <IRQ>
+[  323.866280]  sched_show_task+0x4a3/0x5e0
+[  323.870319]  ? can_nice.part.83+0x20/0x20
+[  323.874437]  ? vprintk_func+0x5e/0xc0
+[  323.878207]  ? printk+0xaa/0xca
+[  323.881459]  ? show_regs_print_info+0x18/0x18
+[  323.885931]  ? show_regs_print_info+0x18/0x18
+[  323.890409]  print_other_cpu_stall+0x996/0x1090
+[  323.895047]  ? print_irqtrace_events+0x270/0x270
+[  323.899771]  ? print_irqtrace_events+0x270/0x270
+[  323.904510]  ? rcu_stall_kick_kthreads.part.48+0x770/0x770
+[  323.910106]  ? check_noncircular+0x20/0x20
+[  323.914309]  ? print_irqtrace_events+0x270/0x270
+[  323.919041]  ? print_irqtrace_events+0x270/0x270
+[  323.923766]  ? __lock_acquire+0x664/0x3e00
+[  323.927980]  ? check_noncircular+0x20/0x20
+[  323.932190]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  323.937352]  ? __lock_acquire+0x664/0x3e00
+[  323.941558]  ? rcu_read_lock_sched_held+0x108/0x120
+[  323.946544]  ? update_cfs_rq_load_avg.part.69+0x23d/0x2d0
+[  323.952048]  ? attach_entity_load_avg+0x7a0/0x7a0
+[  323.956870]  check_cpu_stall.isra.61+0x6e6/0x15b0
+[  323.961682]  ? __lock_acquire+0x664/0x3e00
+[  323.965892]  ? rcu_lockdep_current_cpu_online+0x190/0x190
+[  323.971398]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  323.976563]  ? __lock_acquire+0x664/0x3e00
+[  323.980767]  ? __lock_acquire+0x664/0x3e00
+[  323.984984]  ? check_noncircular+0x20/0x20
+[  323.989196]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  323.994352]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  323.999518]  ? lock_downgrade+0x980/0x980
+[  324.003646]  ? trace_hardirqs_off+0xd/0x10
+[  324.007852]  ? check_noncircular+0x20/0x20
+[  324.012063]  ? check_noncircular+0x20/0x20
+[  324.016277]  ? cpuacct_account_field+0x1e4/0x3b0
+[  324.021015]  ? check_noncircular+0x20/0x20
+[  324.025220]  ? find_held_lock+0x35/0x1d0
+[  324.029251]  ? __acct_update_integrals+0x339/0x4d0
+[  324.034154]  ? __lock_is_held+0xb6/0x140
+[  324.038202]  rcu_check_callbacks+0x256/0xd00
+[  324.042585]  ? rcu_cpu_stall_reset+0x260/0x260
+[  324.047139]  ? trace_hardirqs_off+0xd/0x10
+[  324.051344]  ? raise_softirq+0x325/0x490
+[  324.055381]  ? raise_softirq_irqoff+0x320/0x320
+[  324.060042]  ? run_local_timers+0x18d/0x200
+[  324.064331]  ? timer_clear_idle+0x50/0x50
+[  324.068446]  ? account_process_tick+0xd4/0x3e0
+[  324.072999]  ? thread_group_cputime+0xef0/0xef0
+[  324.077641]  ? ktime_get_resolution_ns+0x300/0x300
+[  324.082553]  update_process_times+0x30/0x60
+[  324.086846]  tick_sched_handle+0x85/0x160
+[  324.090968]  tick_sched_timer+0x42/0x120
+[  324.094999]  __hrtimer_run_queues+0x358/0xe20
+[  324.099472]  ? tick_sched_do_timer+0xe0/0xe0
+[  324.103855]  ? hrtimer_fixup_init+0x70/0x70
+[  324.108155]  ? pvclock_read_flags+0x160/0x160
+[  324.112624]  ? lock_acquire+0x1d5/0x580
+[  324.116570]  ? kvm_clock_get_cycles+0x25/0x30
+[  324.121034]  ? ktime_get_update_offsets_now+0x34a/0x520
+[  324.126371]  ? do_timer+0x50/0x50
+[  324.129800]  ? do_raw_spin_trylock+0x190/0x190
+[  324.134365]  hrtimer_interrupt+0x1c2/0x5e0
+[  324.138588]  smp_apic_timer_interrupt+0x14a/0x700
+[  324.143401]  ? smp_call_function_single_interrupt+0x640/0x640
+[  324.149252]  ? smp_call_function_single_interrupt+0x640/0x640
+[  324.155108]  ? _raw_spin_unlock+0x22/0x30
+[  324.159231]  ? mark_held_locks+0xaf/0x100
+[  324.163349]  ? retint_kernel+0x10/0x10
+[  324.167210]  ? trace_hardirqs_off_thunk+0x1a/0x1c
+[  324.172031]  apic_timer_interrupt+0xa9/0xb0
+[  324.176323] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50
+[  324.181650] RSP: 0018:ffff8801db206738 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff11
+[  324.189325] RAX: ffffed003a2965e3 RBX: ffff8801d14b2e40 RCX: ffffffff84c25899
+[  324.196564] RDX: 0000000000000100 RSI: ffff8801c5f47f29 RDI: 00000000000079c8
+[  324.203803] RBP: ffff8801db2067c8 R08: ffffed0038bea003 R09: ffffed0038bea003
+[  324.211046] R10: 000000000000000b R11: ffffed0038bea002 R12: ffff8801c5f40580
+[  324.218304] R13: ffff8801db206aa0 R14: 00000000000079d0 R15: dffffc0000000000
+[  324.225565]  ? _decode_session6+0x519/0x1380
+[  324.229954]  ? _decode_session6+0x761/0x1380
+[  324.234345]  __xfrm_decode_session+0x68/0x110
+[  324.238814]  __xfrm_policy_check+0x18c/0x2350
+[  324.243279]  ? save_stack+0xa3/0xd0
+[  324.246876]  ? save_stack+0x43/0xd0
+[  324.250469]  ? kasan_kmalloc+0xad/0xe0
+[  324.254322]  ? kasan_slab_alloc+0x12/0x20
+[  324.258435]  ? kmem_cache_alloc+0x12e/0x760
+[  324.262723]  ? raw6_local_deliver+0x737/0xa80
+[  324.267185]  ? ip6_input_finish+0x3c7/0x17a0
+[  324.271564]  ? ipv6_rcv+0xf37/0x1fa0
+[  324.275249]  ? __netif_receive_skb_core+0x1a41/0x3460
+[  324.280418]  ? __xfrm_route_forward+0x670/0x670
+[  324.285054]  ? ip6_finish_output2+0xba0/0x23a0
+[  324.289605]  ? ip6_finish_output+0x6bb/0xaf0
+[  324.293980]  ? ip6_output+0x1eb/0x840
+[  324.297748]  ? ip6_local_out+0x95/0x160
+[  324.301692]  ? check_noncircular+0x20/0x20
+[  324.305895]  ? inet_sendmsg+0x11f/0x5e0
+[  324.309836]  ? sock_sendmsg+0xca/0x110
+[  324.313694]  ? SYSC_sendto+0x361/0x5c0
+[  324.317547]  ? SyS_sendto+0x40/0x50
+[  324.321142]  ? entry_SYSCALL_64_fastpath+0x23/0x9a
+[  324.326041]  ? SyS_sendto+0x40/0x50
+[  324.329636]  ? entry_SYSCALL_64_fastpath+0x23/0x9a
+[  324.334536]  ? free_obj_work+0x690/0x690
+[  324.338567]  ? debug_object_free+0x5a0/0x5a0
+[  324.342948]  ? memcpy+0x45/0x50
+[  324.346199]  ? __copy_skb_header+0x31f/0x540
+[  324.350576]  ? skb_may_tx_timestamp.part.62+0xc0/0xc0
+[  324.355736]  ? __lock_is_held+0xb6/0x140
+[  324.359775]  ? __skb_clone+0x2ac/0xa70
+[  324.363656]  rawv6_rcv+0x8f6/0x1200
+[  324.367262]  ? raw6_icmp_error+0x740/0x740
+[  324.371463]  ? __raw_v6_lookup+0x29f/0x390
+[  324.375676]  raw6_local_deliver+0x819/0xa80
+[  324.379977]  ? rawv6_rcv+0x1200/0x1200
+[  324.383833]  ? ip6_rcv_finish+0x7a0/0x7a0
+[  324.387950]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  324.393106]  ? lock_downgrade+0x980/0x980
+[  324.397227]  ? lock_release+0xa40/0xa40
+[  324.401174]  ? __lock_is_held+0xb6/0x140
+[  324.405216]  ip6_input_finish+0x3c7/0x17a0
+[  324.409418]  ? ip6_input+0x3b4/0x560
+[  324.413102]  ? lock_downgrade+0x980/0x980
+[  324.417231]  ? ip6_rcv_finish+0x7a0/0x7a0
+[  324.421351]  ? nf_hook_slow+0xd3/0x1a0
+[  324.425219]  ip6_input+0xe9/0x560
+[  324.428645]  ? ip6_input_finish+0x17a0/0x17a0
+[  324.433114]  ? find_held_lock+0x35/0x1d0
+[  324.437149]  ? ip6_rcv_finish+0x7a0/0x7a0
+[  324.441267]  ? ipv6_rcv+0x16cd/0x1fa0
+[  324.445039]  ip6_rcv_finish+0x1a9/0x7a0
+[  324.448985]  ? ip6_make_skb+0x580/0x580
+[  324.452931]  ? __lock_is_held+0xb6/0x140
+[  324.456967]  ? nf_hook_slow+0xd3/0x1a0
+[  324.460829]  ipv6_rcv+0xf37/0x1fa0
+[  324.464348]  ? ip6_input+0x560/0x560
+[  324.468032]  ? print_irqtrace_events+0x270/0x270
+[  324.472762]  ? rb_insert_color+0x1580/0x1580
+[  324.477144]  ? check_noncircular+0x20/0x20
+[  324.481344]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  324.486500]  ? __lock_acquire+0x664/0x3e00
+[  324.490717]  ? ip6_make_skb+0x580/0x580
+[  324.494665]  ? ip6_input+0x560/0x560
+[  324.498351]  __netif_receive_skb_core+0x1a41/0x3460
+[  324.503336]  ? find_held_lock+0x35/0x1d0
+[  324.507375]  ? nf_ingress+0x9f0/0x9f0
+[  324.511145]  ? lock_downgrade+0x980/0x980
+[  324.515285]  ? debug_check_no_locks_freed+0x3c0/0x3c0
+[  324.520456]  ? update_curr+0x47b/0xa60
+[  324.524323]  ? __lock_acquire+0x664/0x3e00
+[  324.528527]  ? numa_migrate_preferred+0x250/0x250
+[  324.533347]  ? _find_next_bit+0xee/0x120
+[  324.537386]  ? account_entity_enqueue+0x3c8/0x6e0
+[  324.542205]  ? check_noncircular+0x20/0x20
+[  324.546411]  ? check_noncircular+0x20/0x20
+[  324.550619]  ? enqueue_task_fair+0x3b7/0x2950
+[  324.555083]  ? find_held_lock+0x35/0x1d0
+[  324.559118]  ? check_preempt_wakeup+0xb20/0xb20
+[  324.563765]  ? find_held_lock+0x35/0x1d0
+[  324.567803]  ? lock_acquire+0x1d5/0x580
+[  324.571756]  ? process_backlog+0x45f/0x740
+[  324.575958]  ? lock_acquire+0x1d5/0x580
+[  324.579901]  ? process_backlog+0x1ab/0x740
+[  324.584111]  ? lock_release+0xa40/0xa40
+[  324.588071]  __netif_receive_skb+0x2c/0x1b0
+[  324.592361]  ? __netif_receive_skb+0x2c/0x1b0
+[  324.596827]  process_backlog+0x203/0x740
+[  324.600854]  ? mark_held_locks+0xaf/0x100
+[  324.604982]  net_rx_action+0x792/0x1910
+[  324.608940]  ? napi_complete_done+0x6c0/0x6c0
+[  324.613407]  ? trace_hardirqs_off+0xd/0x10
+[  324.617611]  ? _raw_spin_unlock_irqrestore+0xa6/0xba
+[  324.622684]  ? try_to_wake_up+0xf9/0x1600
+[  324.626801]  ? lock_downgrade+0x980/0x980
+[  324.630925]  ? migrate_swap_stop+0x970/0x970
+[  324.635304]  ? check_noncircular+0x20/0x20
+[  324.639512]  ? check_noncircular+0x20/0x20
+[  324.643721]  ? lock_acquire+0x1d5/0x580
+[  324.647665]  ? lock_acquire+0x1d5/0x580
+[  324.651610]  ? __hrtimer_run_queues+0x394/0xe20
+[  324.656247]  ? lock_downgrade+0x980/0x980
+[  324.660367]  ? lock_release+0xa40/0xa40
+[  324.664322]  ? find_held_lock+0x35/0x1d0
+[  324.668363]  ? clockevents_program_event+0x163/0x2e0
+[  324.673435]  ? lock_downgrade+0x980/0x980
+[  324.677564]  ? pvclock_read_flags+0x160/0x160
+[  324.682041]  ? check_noncircular+0x20/0x20
+[  324.686245]  ? print_irqtrace_events+0x270/0x270
+[  324.690972]  ? ktime_get_resolution_ns+0x300/0x300
+[  324.695866]  ? lock_downgrade+0x980/0x980
+[  324.699984]  ? check_noncircular+0x20/0x20
+[  324.704187]  ? do_timer+0x50/0x50
+[  324.707615]  ? __lock_is_held+0xb6/0x140
+[  324.711663]  __do_softirq+0x2d7/0xb85
+[  324.715432]  ? task_prio+0x40/0x40
+[  324.718949]  ? __irqentry_text_end+0x4/0x4
+[  324.723152]  ? irq_exit+0xbb/0x200
+[  324.726660]  ? smp_apic_timer_interrupt+0x16b/0x700
+[  324.731646]  ? smp_reschedule_interrupt+0xe6/0x670
+[  324.736543]  ? smp_call_function_single_interrupt+0x640/0x640
+[  324.742400]  ? _raw_spin_lock+0x32/0x40
+[  324.746356]  ? _raw_spin_unlock+0x22/0x30
+[  324.750474]  ? handle_edge_irq+0x2b4/0x7c0
+[  324.754681]  ? task_prio+0x40/0x40
+[  324.758199]  ? trace_hardirqs_off_thunk+0x1a/0x1c
+[  324.763025]  do_softirq_own_stack+0x2a/0x40
+[  324.767312]  </IRQ>
+[  324.769522]  do_softirq.part.21+0x14d/0x190
+[  324.773813]  ? ip6_finish_output2+0xb6d/0x23a0
+[  324.778364]  __local_bh_enable_ip+0x1ee/0x230
+[  324.782830]  ip6_finish_output2+0xba0/0x23a0
+[  324.787213]  ? print_irqtrace_events+0x270/0x270
+[  324.791951]  ? ip6_sk_dst_lookup_flow+0x7f0/0x7f0
+[  324.796764]  ? prandom_u32+0x24/0x30
+[  324.800447]  ? ip_idents_reserve+0x1e6/0x2a0
+[  324.804828]  ? ipv4_sysctl_rtcache_flush+0x70/0x70
+[  324.809732]  ? __lock_is_held+0xb6/0x140
+[  324.813774]  ? rcu_read_lock_sched_held+0x108/0x120
+[  324.818758]  ? ip6_copy_metadata+0x62a/0xad0
+[  324.823132]  ? __kmalloc_track_caller+0x46a/0x760
+[  324.827944]  ? dst_output+0x140/0x140
+[  324.831715]  ? memcpy+0x45/0x50
+[  324.834968]  ip6_fragment+0x25f2/0x3470
+[  324.838912]  ? ip6_fragment+0x25f2/0x3470
+[  324.843043]  ? ip6_sk_dst_lookup_flow+0x7f0/0x7f0
+[  324.847864]  ? ip6_forward+0x33d0/0x33d0
+[  324.851902]  ? ip6_mtu+0x1c7/0x4d0
+[  324.855410]  ? ip6_dst_ifdown+0x3d0/0x3d0
+[  324.859537]  ip6_finish_output+0x6bb/0xaf0
+[  324.863753]  ip6_output+0x1eb/0x840
+[  324.867362]  ? ip6_finish_output+0xaf0/0xaf0
+[  324.871740]  ? lock_acquire+0x1d5/0x580
+[  324.875683]  ? rawv6_sendmsg+0x1d74/0x3e70
+[  324.879892]  ? ip6_fragment+0x3470/0x3470
+[  324.884025]  ip6_local_out+0x95/0x160
+[  324.887802]  ip6_send_skb+0xa1/0x330
+[  324.891487]  ip6_push_pending_frames+0xb3/0xe0
+[  324.896041]  rawv6_sendmsg+0x2ee9/0x3e70
+[  324.900090]  ? rawv6_bind+0x8c0/0x8c0
+[  324.903870]  ? avc_has_perm+0x35e/0x680
+[  324.907814]  ? lock_downgrade+0x980/0x980
+[  324.911934]  ? lock_release+0xa40/0xa40
+[  324.915876]  ? __handle_mm_fault+0x3ce0/0x3ce0
+[  324.920436]  ? up_read+0x1a/0x40
+[  324.923776]  ? avc_has_perm+0x43e/0x680
+[  324.927724]  ? avc_has_perm_noaudit+0x520/0x520
+[  324.932372]  ? do_page_fault+0xee/0x720
+[  324.936313]  ? iterate_fd+0x3f0/0x3f0
+[  324.940091]  ? find_held_lock+0x35/0x1d0
+[  324.944155]  inet_sendmsg+0x11f/0x5e0
+[  324.947922]  ? inet_sendmsg+0x11f/0x5e0
+[  324.951869]  ? inet_recvmsg+0x5f0/0x5f0
+[  324.955816]  ? selinux_socket_sendmsg+0x36/0x40
+[  324.960454]  ? security_socket_sendmsg+0x89/0xb0
+[  324.965181]  ? inet_recvmsg+0x5f0/0x5f0
+[  324.969127]  sock_sendmsg+0xca/0x110
+[  324.972812]  SYSC_sendto+0x361/0x5c0
+[  324.976502]  ? SYSC_connect+0x4a0/0x4a0
+[  324.980454]  ? __might_sleep+0x95/0x190
+[  324.984399]  ? exit_to_usermode_loop+0x8c/0x310
+[  324.989049]  ? trace_event_raw_event_sys_exit+0x260/0x260
+[  324.994566]  ? syscall_return_slowpath+0x2ad/0x550
+[  324.999464]  ? prepare_exit_to_usermode+0x340/0x340
+[  325.004450]  ? entry_SYSCALL_64_fastpath+0x5/0x9a
+[  325.009270]  SyS_sendto+0x40/0x50
+[  325.012699]  entry_SYSCALL_64_fastpath+0x23/0x9a
+[  325.017423] RIP: 0033:0x452ac9
+[  325.020580] RSP: 002b:00007f042a550c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
+[  325.028255] RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
+[  325.035495] RDX: 0000000000000000 RSI: 0000000020aa7000 RDI: 0000000000000013
+[  325.042733] RBP: 00000000000004b6 R08: 00000000201e0000 R09: 000000000000001c
+[  325.049971] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f51b0
+[  325.057210] R13: 00000000ffffffff R14: 00007f042a5516d4 R15: 0000000000000000