INFO: task syz-executor.0:7927 blocked for more than 142 seconds.
Not tainted 5.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D28224 7927 7900 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3385 [inline]
__schedule+0x8e1/0x1f30 kernel/sched/core.c:4081
schedule+0xdc/0x2b0 kernel/sched/core.c:4155
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214
__mutex_lock_common kernel/locking/mutex.c:1036 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1106
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1121
perf_event_ctx_lock_nested+0x296/0x4c0 kernel/events/core.c:1278
perf_event_ctx_lock kernel/events/core.c:1291 [inline]
perf_ioctl+0x69/0xb0 kernel/events/core.c:5348
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: Bad RIP value.
RSP: 002b:00007fc7dc139c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071c050 RCX: 000000000045a759
RDX: ffffffffffffffff RSI: 0000000000002405 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc7dc13a6d4
R13: 00000000004b60c0 R14: 00000000006ec968 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1115:
#0: ffffffff895a4080 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5334
2 locks held by rsyslogd/7718:
#0: ffff888021aad160 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
#1: ffff88802d237398 (&rq->lock){-.-.}, at: newidle_balance+0xa28/0xe80 kernel/sched/fair.c:10166
2 locks held by getty/7841:
#0: ffff888029b10090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc900040162e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7842:
#0: ffff88802a9bf090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc900040022e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7843:
#0: ffff888027719090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc9000401a2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7844:
#0: ffff88802950a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc9000400e2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7845:
#0: ffff8880277e4090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc9000401e2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7846:
#0: ffff8880250ae090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc900040222e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/7847:
#0: ffff888026afb090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc900026f22e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
3 locks held by syz-executor.0/7921:
1 lock held by syz-executor.0/7927:
#0: ffff888026b9e4a0 (&ctx->mutex){+.+.}, at: perf_event_ctx_lock_nested+0x296/0x4c0 kernel/events/core.c:1278
=============================================
NMI backtrace for cpu 2
CPU: 2 PID: 1115 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xb11/0x10c0 kernel/hung_task.c:289
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 2 to CPUs 0-1,3:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
NMI backtrace for cpu 3 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
NMI backtrace for cpu 1
CPU: 1 PID: 7921 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:rcu_is_watching+0x0/0x30 kernel/rcu/tree.c:918
Code: 5c 5d d1 e8 83 f0 01 83 e0 01 c3 4c 89 e7 e8 27 a8 4f 00 eb df 48 89 45 e8 e8 3c a8 4f 00 48 8b 45 e8 eb 8e 66 0f 1f 44 00 00 <55> 48 89 e5 65 ff 05 ed ba 9f 7e e8 40 ff ff ff 83 f0 01 65 ff 0d
RSP: 0018:ffff88802d309830 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff88802d309870 RCX: 1ffffffff146e1da
RDX: 0000000000000000 RSI: ffffffff816532dc RDI: ffff8880712a0994
RBP: ffff88802d309840 R08: ffff8880712a0100 R09: fffffbfff146dba1
R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: 0000000000000001
R13: ffff88801fc3a160 R14: ffff88802d329440 R15: dffffc0000000000
FS: 00007fc7dc17c700(0000) GS:ffff88802d300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5351bc5000 CR3: 00000000715ff000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_sched_held+0x5b/0xd0 kernel/rcu/update.c:120
trace_hrtimer_expire_exit include/trace/events/timer.h:279 [inline]
__run_hrtimer kernel/time/hrtimer.c:1515 [inline]
__hrtimer_run_queues+0xc71/0xe40 kernel/time/hrtimer.c:1576
hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1638
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 58 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d ff 25 99 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 e1 67 96 f9 65 8b 05 12 10 48 78
RSP: 0018:ffff88802d309b68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12a668b RBX: 0000000000000282 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000282
RBP: ffff88802d309b78 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9
R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffffffff8bcfda60
R13: 0000000000000282 R14: ffff888016edc140 R15: dffffc0000000000
spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
aoenet_xmit+0x148/0x210 drivers/block/aoe/aoenet.c:122
aoecmd_cfg+0x46a/0x640 drivers/block/aoe/aoecmd.c:1373
discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199
Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41
RSP: 0018:ffff8880712af8d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12a668d RBX: ffff8880712a0100 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8880712a0994
RBP: ffff8880712af8e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9
R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d337380
R13: ffff88802c520580 R14: ffff88807123e040 R15: 0000000000000001
finish_lock_switch kernel/sched/core.c:3124 [inline]
finish_task_switch+0x147/0x750 kernel/sched/core.c:3224
context_switch kernel/sched/core.c:3388 [inline]
__schedule+0x8e9/0x1f30 kernel/sched/core.c:4081
preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236
preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261
___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
smp_call_function_single+0x410/0x480 kernel/smp.c:313
task_function_call+0xe9/0x180 kernel/events/core.c:114
perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
__do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
__se_sys_perf_event_open kernel/events/core.c:11151 [inline]
__x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 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 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc7dc17bc88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000040
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fc7dc17c6d4
R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff