INFO: task syz-executor.0:8006 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26928 pid: 8006 ppid: 6515 flags:0x00024006
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
io_wq_exit_workers fs/io-wq.c:1204 [inline]
io_wq_put_and_exit+0x33a/0xb70 fs/io-wq.c:1239
io_uring_clean_tctx fs/io_uring.c:9774 [inline]
io_uring_cancel_generic+0x61d/0x690 fs/io_uring.c:9855
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x21d0 kernel/signal.c:2820
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb2a0b1dae9
RSP: 002b:00007fb29e093188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 00000000000002ff RBX: 00007fb2a0c30f60 RCX: 00007fb2a0b1dae9
RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003
RBP: 00007fb2a0b77f25 R08: 0000000000000000 R09: 0000000000008b00
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb2a1164b2f R14: 00007fb29e093300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
1 lock held by in:imklog/6176:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6484 Comm: syz-fuzzer Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen include/linux/fortify-string.h:102 [inline]
RIP: 0010:trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:perf_trace_lock_acquire+0xb9/0x550 include/trace/events/lock.h:13
Code: 8d 46 18 48 89 85 48 ff ff ff 48 c1 e8 03 80 3c 10 00 0f 85 4d 03 00 00 49 8b 7e 18 48 c7 c0 60 0f 8c 89 48 85 ff 48 0f 44 f8 d2 64 99 02 49 8d 7d 78 49 89 c4 48 89 fa 8d 40 01 48 c1 ea 03
RSP: 0018:ffffc90002e4f920 EFLAGS: 00000082
RAX: ffffffff898c0f60 RBX: 1ffff920005c9f47 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff90431da0 RDI: ffffffff89e48580
RBP: ffffc90002e4fa08 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff1adee02 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8b880d60 R14: ffffffff90431da0 R15: ffffc90002e4f9e0
FS: 000000c00002e090(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4d5407000 CR3: 00000000720b7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000006
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x416/0x510 kernel/locking/lockdep.c:5596
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x27/0x3e0 kernel/time/hrtimer.c:1084
__hrtimer_start_range_ns kernel/time/hrtimer.c:1258 [inline]
hrtimer_start_range_ns+0x78a/0xa80 kernel/time/hrtimer.c:1298
hrtimer_start_expires include/linux/hrtimer.h:432 [inline]
hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline]
do_nanosleep+0x1e8/0x690 kernel/time/hrtimer.c:2041
hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097
__do_sys_nanosleep kernel/time/hrtimer.c:2131 [inline]
__se_sys_nanosleep kernel/time/hrtimer.c:2118 [inline]
__x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:2118
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x46db5d
Code: 8b 44 24 20 b9 40 42 0f 00 f7 f1 48 89 04 24 b8 e8 03 00 00 f7 e2 48 89 44 24 08 48 89 e7 be 00 00 00 00 b8 23 00 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 002b:000000c00003df18 EFLAGS: 00000202 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 000000000046db5d
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c00003df18
RBP: 000000c00003df28 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000043b6e0
R13: 0000000000000000 R14: 0000000000c55c14 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 8d 46 18 lea 0x18(%rsi),%eax
3: 48 89 85 48 ff ff ff mov %rax,-0xb8(%rbp)
a: 48 c1 e8 03 shr $0x3,%rax
e: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
12: 0f 85 4d 03 00 00 jne 0x365
18: 49 8b 7e 18 mov 0x18(%r14),%rdi
1c: 48 c7 c0 60 0f 8c 89 mov $0xffffffff898c0f60,%rax
23: 48 85 ff test %rdi,%rdi
26: 48 0f 44 f8 cmove %rax,%rdi
* 2a: e8 d2 64 99 02 callq 0x2996501 <-- trapping instruction
2f: 49 8d 7d 78 lea 0x78(%r13),%rdi
33: 49 89 c4 mov %rax,%r12
36: 48 89 fa mov %rdi,%rdx
39: 8d 40 01 lea 0x1(%rax),%eax
3c: 48 c1 ea 03 shr $0x3,%rdx