INFO: task syz-executor.3:18214 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27656 pid:18214 ppid: 6553 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
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:1217 [inline]
io_wq_put_and_exit+0x33a/0xb70 fs/io-wq.c:1252
io_uring_clean_tctx fs/io_uring.c:9770 [inline]
io_uring_cancel_generic+0x61d/0x690 fs/io_uring.c:9851
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+0x34c/0x28b0 kernel/signal.c:2837
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: 0033:0x7f2e373d5ae9
RSP: 002b:00007f2e34909188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 000000000000011f RBX: 00007f2e374e90e0 RCX: 00007f2e373d5ae9
RDX: 000000000000b866 RSI: 00000000000002ff RDI: 0000000000000003
RBP: 00007f2e3742ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6286e47f R14: 00007f2e34909300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6232:
#0: ffff88801ccb6af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-next-20211118-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:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
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: 2963 Comm: systemd-journal Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x77/0x80 kernel/kcov.c:275
Code: f0 72 27 41 0f b6 fb 41 0f b6 c9 48 83 c2 01 48 c7 44 30 e0 01 00 00 00 48 89 7c 30 e8 48 89 4c 30 f0 4c 89 54 d8 20 48 89 10 <5b> c3 0f 1f 80 00 00 00 00 53 41 89 fb 41 89 f1 bf 03 00 00 00 65
RSP: 0018:ffffc90001f6fef8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88807aeed7c0
RDX: 0000000000000000 RSI: ffff88807aeed7c0 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff819be73e R11: 0000000000000000 R12: ffffc90001f6ff58
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f262cc748c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f262a1fe000 CR3: 000000007f6de000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000023c499bf DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock_sched_notrace include/linux/rcupdate.h:810 [inline]
trace_user_enter.constprop.0+0x17e/0x220 include/trace/events/context_tracking.h:34
__context_tracking_enter+0xe1/0x100 kernel/context_tracking.c:81
user_enter_irqoff include/linux/context_tracking.h:41 [inline]
__exit_to_user_mode kernel/entry/common.c:130 [inline]
syscall_exit_to_user_mode+0x48/0x60 kernel/entry/common.c:302
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f262bf0cf17
Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007ffdc9f4ffe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: 0000000000000b93 RBX: 0000563c65b7b1e0 RCX: 00007f262bf0cf17
RDX: 00007ffdc9f500a0 RSI: 0000000000000000 RDI: 0000563c65b7b1e0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000206 R12: 00007ffdc9f500a0
R13: 0000000000000b93 R14: 00007ffdc9f52e90 R15: 00007ffdc9f504a0
----------------
Code disassembly (best guess):
0: f0 72 27 lock jb 0x2a
3: 41 0f b6 fb movzbl %r11b,%edi
7: 41 0f b6 c9 movzbl %r9b,%ecx
b: 48 83 c2 01 add $0x1,%rdx
f: 48 c7 44 30 e0 01 00 movq $0x1,-0x20(%rax,%rsi,1)
16: 00 00
18: 48 89 7c 30 e8 mov %rdi,-0x18(%rax,%rsi,1)
1d: 48 89 4c 30 f0 mov %rcx,-0x10(%rax,%rsi,1)
22: 4c 89 54 d8 20 mov %r10,0x20(%rax,%rbx,8)
27: 48 89 10 mov %rdx,(%rax)
* 2a: 5b pop %rbx <-- trapping instruction
2b: c3 retq
2c: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
33: 53 push %rbx
34: 41 89 fb mov %edi,%r11d
37: 41 89 f1 mov %esi,%r9d
3a: bf 03 00 00 00 mov $0x3,%edi
3f: 65 gs