INFO: task syz-executor.0:31587 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23216 pid:31587 ppid: 6537 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9850
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x281/0x24f0 kernel/exit.c:787
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 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+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2b21da3ae9
RSP: 002b:00007f2b1f319218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2b21eb6f68 RCX: 00007f2b21da3ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2b21eb6f68
RBP: 00007f2b21eb6f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2b21eb6f6c
R13: 00007fff07e66acf R14: 00007f2b1f319300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1dd40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6170:
#0: ffff888021c5eff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc2-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2961 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen+0x40/0x60 lib/string.c:487
Code: 2e 0f 1f 84 00 00 00 00 00 90 48 89 c3 48 c1 e8 03 42 0f b6 04 38 84 c0 75 0b 48 8d 43 01 80 3b 00 75 e7 eb 13 89 d9 80 e1 07 <38> c1 7c ec 48 89 df e8 74 d1 83 fd eb e2 49 f7 d6 49 01 c6 4c 89
RSP: 0018:ffffc90001cff7e0 EFLAGS: 00000202
RAX: 0000000000000006 RBX: ffffffff8a708849 RCX: 000000008a708801
RDX: ffffffff81e224c5 RSI: ffffffff8cb1dd40 RDI: ffffffff8a708840
RBP: ffffc90001cff910 R08: dffffc0000000000 R09: fffffbfff1bfd16e
R10: fffffbfff1bfd16e R11: 0000000000000000 R12: ffffffff8cb1dd40
R13: 1ffff9200039ff34 R14: ffffffff8a708840 R15: dffffc0000000000
FS: 00007fbae50cf8c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbae20c1000 CR3: 000000001ccad000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline]
perf_trace_lock+0x10b/0x440 include/trace/events/lock.h:39
trace_lock_release+0x128/0x150 include/trace/events/lock.h:58
lock_release+0x82/0x810 kernel/locking/lockdep.c:5648
dput+0x271/0x6e0 include/linux/rcupdate.h:721
path_put fs/namei.c:557 [inline]
terminate_walk+0x1c2/0x570 fs/namei.c:672
path_parentat fs/namei.c:2504 [inline]
filename_parentat+0x2be/0x7b0 fs/namei.c:2519
filename_create+0xf4/0x4e0 fs/namei.c:3637
do_mkdirat+0xae/0x530 fs/namei.c:3898
__do_sys_mkdir fs/namei.c:3929 [inline]
__se_sys_mkdir fs/namei.c:3927 [inline]
__x64_sys_mkdir+0x6a/0x80 fs/namei.c:3927
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fbae438a687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdec536e48 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffdec539eb0 RCX: 00007fbae438a687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 00005637591708a0
RBP: 00007ffdec536e80 R08: 00005637572a73e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00005637591708a0 R15: 00007ffdec5374c0
----------------
Code disassembly (best guess):
0: 2e 0f 1f 84 00 00 00 nopl %cs:0x0(%rax,%rax,1)
7: 00 00
9: 90 nop
a: 48 89 c3 mov %rax,%rbx
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax
16: 84 c0 test %al,%al
18: 75 0b jne 0x25
1a: 48 8d 43 01 lea 0x1(%rbx),%rax
1e: 80 3b 00 cmpb $0x0,(%rbx)
21: 75 e7 jne 0xa
23: eb 13 jmp 0x38
25: 89 d9 mov %ebx,%ecx
27: 80 e1 07 and $0x7,%cl
* 2a: 38 c1 cmp %al,%cl <-- trapping instruction
2c: 7c ec jl 0x1a
2e: 48 89 df mov %rbx,%rdi
31: e8 74 d1 83 fd callq 0xfd83d1aa
36: eb e2 jmp 0x1a
38: 49 f7 d6 not %r14
3b: 49 01 c6 add %rax,%r14
3e: 4c rex.WR
3f: 89 .byte 0x89