INFO: task syz-executor.2:14082 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.2 state:D stack:26552 pid:14082 ppid: 6558 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9846
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/0x2220 kernel/signal.c:2852
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: 0033:0x7f78ac6afae9
RSP: 002b:00007f78a9c04218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f78ac7c3028 RCX: 00007f78ac6afae9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f78ac7c302c
RBP: 00007f78ac7c3020 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00007f78ac7c302c
R13: 00007ffd5c5012ef R14: 00007f78a9c04300 R15: 0000000000022000
Showing all locks held in the system:
5 locks held by kworker/u4:1/10:
1 lock held by khungtaskd/27:
#0: ffffffff8bb81120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6224:
#0: ffff88807e7d18f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
=============================================
NMI backtrace for cpu 1
CPU: 1 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+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: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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6224 Comm: in:imklog Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__fget_files+0x135/0x3e0 fs/file.c:852
Code: e8 03 42 80 3c 28 00 0f 85 af 02 00 00 48 8b 45 08 48 8d 1c d8 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 88 02 00 00 4c 8b 23 <4d> 85 e4 0f 84 1b 01 00 00 e8 7d f3 a6 ff 49 8d bc 24 84 00 00 00
RSP: 0018:ffffc9000b09fe00 EFLAGS: 00000246
RAX: 1ffff11003c26fa0 RBX: ffff88801e137d00 RCX: 0000000000000000
RDX: ffff8880765ec2c0 RSI: ffffffff81cfdf16 RDI: ffff88801e137c28
RBP: ffff88801e137c20 R08: 0000000000000004 R09: 0000000000000001
R10: ffffffff81cfdf08 R11: 0000000000000000 R12: ffff88807e7d1800
R13: dffffc0000000000 R14: 0000000000000004 R15: 0000000000001fa0
FS: 00007f2bcaf4f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28b8804008 CR3: 0000000019591000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__fget fs/file.c:870 [inline]
__fget_light fs/file.c:965 [inline]
__fget_light+0xd4/0x280 fs/file.c:954
__fdget fs/file.c:973 [inline]
__fdget_pos+0x19/0x100 fs/file.c:984
fdget_pos include/linux/file.h:75 [inline]
ksys_read+0x6e/0x250 fs/read_write.c:610
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: 0033:0x7f2bcd59222d
Code: c1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 97 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f2bcaf2e580 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2bcd59222d
RDX: 0000000000001fa0 RSI: 00007f2bcaf2eda0 RDI: 0000000000000004
RBP: 000055e806c3e9d0 R08: 0000000000000000 R09: 0000000000000000
R10: 2ce33e6c02ce33e7 R11: 0000000000000293 R12: 00007f2bcaf2eda0
R13: 0000000000001fa0 R14: 0000000000001f9f R15: 00007f2bcaf2f1af
----------------
Code disassembly (best guess):
0: e8 03 42 80 3c callq 0x3c804208
5: 28 00 sub %al,(%rax)
7: 0f 85 af 02 00 00 jne 0x2bc
d: 48 8b 45 08 mov 0x8(%rbp),%rax
11: 48 8d 1c d8 lea (%rax,%rbx,8),%rbx
15: 48 89 d8 mov %rbx,%rax
18: 48 c1 e8 03 shr $0x3,%rax
1c: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
21: 0f 85 88 02 00 00 jne 0x2af
27: 4c 8b 23 mov (%rbx),%r12
* 2a: 4d 85 e4 test %r12,%r12 <-- trapping instruction
2d: 0f 84 1b 01 00 00 je 0x14e
33: e8 7d f3 a6 ff callq 0xffa6f3b5
38: 49 8d bc 24 84 00 00 lea 0x84(%r12),%rdi
3f: 00