diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2022-04-24 16:15:09 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2022-04-25 11:31:49 +0200 |
| commit | 152baeddc2f576c59e80d951fac4f3930a8e297f (patch) | |
| tree | 24e3e50fb871d3e53401fdb9d83b582c5e096eab /pkg/report/testdata | |
| parent | 0d1994d2d586cf72d02f2fa63070d5786dd39dc6 (diff) | |
pkg/report: ignore down_trylock frames
We already ignore all other semaphore-related frames,
but not this one. Ignore this one as well.
Diffstat (limited to 'pkg/report/testdata')
| -rw-r--r-- | pkg/report/testdata/linux/report/648 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/pkg/report/testdata/linux/report/648 b/pkg/report/testdata/linux/report/648 new file mode 100644 index 000000000..40c44777f --- /dev/null +++ b/pkg/report/testdata/linux/report/648 @@ -0,0 +1,39 @@ +TITLE: possible deadlock in tick_handler + +[ 1740.381206][ C0] WARNING: possible circular locking dependency detected +[ 1740.381209][ C0] 4.15.0+ #6 Not tainted +[ 1740.381215][ C0] ------------------------------------------------------ +[ 1740.381219][ C0] syz-executor.2/31457 is trying to acquire lock: +[ 1740.381222][ C0] ffffffff8600aef8 ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 +[ 1740.381235][ C0] +[ 1740.381239][ C0] but task is already holding lock: +[ 1740.381242][ C0] ffff88006c849558 (&rq->lock){-.-.}, at: tick_handler+0x17e/0xb00 +[ 1740.381254][ C0] +[ 1740.381259][ C0] which lock already depends on the new lock. +[ 1740.381261][ C0] +[ 1740.381262][ C0] +[ 1740.381266][ C0] the existing dependency chain (in reverse order) is: +[ 1740.381268][ C0] +[ 1740.381270][ C0] -> #2 (&rq->lock){-.-.}: +[ 1740.381280][ C0] _raw_spin_lock+0x2b/0x40 +[ 1740.381283][ C0] task_fork_fair+0x41/0x3c0 +[ 1740.381286][ C0] sched_fork+0x505/0xd70 +[ 1740.381290][ C0] copy_process+0x1c8a/0x6ef0 +[ 1740.381292][ C0] _do_fork+0xf4/0x750 +[ 1740.381296][ C0] kernel_thread+0xc6/0x100 +[ 1740.381299][ C0] rest_init+0x24/0x1da +[ 1740.381302][ C0] start_kernel+0x824/0x85f +[ 1740.381722][ C0] Call Trace: +[ 1740.381729][ C0] dump_stack+0x175/0x1dd +[ 1740.381733][ C0] print_circular_bug.cold+0x162/0x171 +[ 1740.381737][ C0] check_noncircular+0x304/0x400 +[ 1740.381758][ C0] __lock_acquire+0x2522/0x5470 +[ 1740.381769][ C0] lock_acquire+0x1d8/0x770 +[ 1740.381789][ C0] _raw_spin_lock_irqsave+0x92/0xd0 +[ 1740.381796][ C0] down_trylock+0x13/0x70 +[ 1740.381804][ C0] __down_trylock_console_sem+0xa8/0x210 +[ 1740.381808][ C0] vprintk_emit+0x2c2/0x770 +[ 1740.381811][ C0] vprintk_default+0x28/0x30 +[ 1740.381815][ C0] vprintk_func+0x7a/0x120 +[ 1740.381818][ C0] printk+0xba/0xed +[ 1740.381832][ C0] tick_handler.cold+0x8c/0x258 |