From 4080af966ce878a69484ce2c87e8cd50b8f9b5a2 Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Fri, 22 Jan 2021 10:52:49 +0100 Subject: pkg/report: ignore kthread more precisely in stall reports --- pkg/report/testdata/linux/report/588 | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 pkg/report/testdata/linux/report/588 (limited to 'pkg/report/testdata/linux') diff --git a/pkg/report/testdata/linux/report/588 b/pkg/report/testdata/linux/report/588 new file mode 100644 index 000000000..9635f73d0 --- /dev/null +++ b/pkg/report/testdata/linux/report/588 @@ -0,0 +1,50 @@ +TITLE: INFO: rcu detected stall in io_sq_thread +TYPE: HANG + +[ 589.079232] rcu: INFO: rcu_sched self-detected stall on CPU +[ 589.085351] rcu: 0-....: (10499 ticks this GP) idle=d0a/1/0x4000000000000002 softirq=51093/51093 fqs=3111 +[ 589.095364] rcu: (t=10500 jiffies g=51445 q=1360) +[ 589.100420] NMI backtrace for cpu 0 +[ 589.104157] CPU: 0 PID: 17938 Comm: io_uring-sq Not tainted 4.15.0-syzkaller #0 +[ 589.111615] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 +[ 589.120984] Call Trace: +[ 589.123632] +[ 589.125842] [] dump_stack+0xe1/0x157 +[ 589.131235] [] ? lapic_can_unplug_cpu+0x41/0x80 +[ 589.137578] [] nmi_cpu_backtrace.cold+0x63/0xa5 +[ 589.144040] [] ? lapic_can_unplug_cpu+0x80/0x80 +[ 589.150560] [] nmi_trigger_cpumask_backtrace+0x1a6/0x1e0 +[ 589.157694] [] arch_trigger_cpumask_backtrace+0x14/0x20 +[ 589.164738] [] rcu_dump_cpu_stacks+0x183/0x1cf +[ 589.170992] [] ? find_next_bit+0x107/0x130 +[ 589.176900] [] rcu_sched_clock_irq.cold+0x4d7/0x8a8 +[ 589.183583] [] ? raise_softirq+0x183/0x240 +[ 589.189495] [] update_process_times+0x2d/0x70 +[ 589.195676] [] tick_sched_handle+0xa0/0x180 +[ 589.201767] [] tick_sched_timer+0x44/0x130 +[ 589.207685] [] __hrtimer_run_queues+0x33b/0xd10 +[ 589.214033] [] ? tick_sched_do_timer+0x110/0x110 +[ 589.220465] [] ? hrtimer_fixup_activate+0x30/0x30 +[ 589.226994] [] hrtimer_interrupt+0x2ea/0x730 +[ 589.233080] [] smp_apic_timer_interrupt+0x159/0x580 +[ 589.239769] [] apic_timer_interrupt+0x93/0xa0 +[ 589.245935] +[ 589.248181] RIP: 0010:write_comp_data+0x9/0x70 +[ 589.252758] RSP: 0018:ffff8801e1757da8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff12 +[ 589.260594] RAX: 0000000000000007 RBX: ffff8801ef81c000 RCX: ffffffff81492f64 +[ 589.267982] RDX: 0000000000200000 RSI: 0000000000000000 RDI: 0000000000000005 +[ 589.275264] RBP: ffff8801e1757db0 R08: ffff8801ef81c000 R09: fffffbfff14ca71c +[ 589.282674] R10: ffff8801e1757dd0 R11: 0000000000000000 R12: 0000000000200000 +[ 589.289959] R13: ffff8801a7091000 R14: 0000000000000002 R15: dffffc0000000000 +[ 589.297452] [] ? kthread_should_park+0x54/0xd0 +[ 589.304431] [] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 +[ 589.311816] [] kthread_should_park+0x54/0xd0 +[ 589.318011] [] io_sq_thread+0x213/0xc80 +[ 589.323709] [] ? io_submit_sqes+0x28b0/0x28b0 +[ 589.329983] [] ? __kthread_parkme+0x250/0x360 +[ 589.336146] [] ? __startup_64+0x180/0x180 +[ 589.341974] [] ? finish_wait+0x260/0x260 +[ 589.347728] [] kthread+0x345/0x410 +[ 589.352926] [] ? io_submit_sqes+0x28b0/0x28b0 +[ 589.359083] [] ? kthread_create_worker_on_cpu+0xf0/0xf0 +[ 589.366440] [] ret_from_fork+0x3f/0x50 -- cgit mrf-deployment