INFO: task syz-executor.3:5601 blocked for more than 143 seconds.
Not tainted 5.18.0-rc7-syzkaller-00164-g6c3f5bec9b40 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25688 pid: 5601 ppid: 3627 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6388
schedule+0xeb/0x1b0 kernel/sched/core.c:6460
schedule_timeout+0xac/0x300 kernel/time/timer.c:1860
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x5e8/0xcd0 fs/io-wq.c:1301
io_uring_clean_tctx+0x164/0x1d0 fs/io_uring.c:10394
io_uring_cancel_generic+0x2de/0x554 fs/io_uring.c:10464
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x141/0x1eb0 kernel/exit.c:750
do_group_exit+0x23b/0x2f0 kernel/exit.c:925
get_signal+0x172f/0x1780 kernel/signal.c:2864
arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:166
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f509b4890e9
RSP: 002b:00007f509a3fe168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000dc9 RBX: 00007f509b59bf60 RCX: 00007f509b4890e9
RDX: 0000000000000000 RSI: 0000000000000dc9 RDI: 0000000000000004
RBP: 00007f509a3fe1d0 R08: 0000000000000000 R09: 0040000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffca69cd5af R14: 00007f509a3fe300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1b020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3272:
#0: ffff88807e908098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ad/0x1c90 drivers/tty/n_tty.c:2075
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.18.0-rc7-syzkaller-00164-g6c3f5bec9b40 #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xcf9/0xd40 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5616 Comm: iou-wrk-5601 Not tainted 5.18.0-rc7-syzkaller-00164-g6c3f5bec9b40 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:85 [inline]
RIP: 0010:lock_release+0x88/0x870 kernel/locking/lockdep.c:5654
Code: f1 f1 04 f2 00 f2 4b 89 04 27 48 b8 f2 f2 00 f3 f3 f3 f3 f3 4b 89 44 27 08 48 89 7c 24 28 e8 ef 07 00 00 48 c7 c0 f4 a5 01 8e <48> c1 e8 03 42 8a 04 20 84 c0 0f 85 bd 05 00 00 83 3d 05 82 9a 0c
RSP: 0018:ffffc900089fef20 EFLAGS: 00000082
RAX: ffffffff8e01a5f4 RBX: ffff888028f59060 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8a8d1720 RDI: ffffffff8ae88f20
RBP: ffffc900089ff050 R08: dffffc0000000000 R09: fffffbfff1c02e56
R10: fffffbfff1c02e56 R11: 1ffffffff1c02e55 R12: dffffc0000000000
R13: ffffffff81f911ec R14: ffffc900089ff080 R15: 1ffff9200113fdf0
FS: 00007f509a3fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556713725600 CR3: 000000007945e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
fanotify_read+0x18c/0x880 fs/notify/fanotify/fanotify_user.c:757
loop_rw_iter+0x37a/0x5a0
io_iter_do_read fs/io_uring.c:3744 [inline]
io_read fs/io_uring.c:3861 [inline]
io_issue_sqe+0xc2ee/0xf4c0 fs/io_uring.c:7146
io_wq_submit_work+0x480/0x540 fs/io_uring.c:7321
io_worker_handle_work+0x8e1/0xee0 fs/io-wq.c:597
io_wqe_worker+0x39c/0xe90 fs/io-wq.c:644
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: f1 icebp
1: f1 icebp
2: 04 f2 add $0xf2,%al
4: 00 f2 add %dh,%dl
6: 4b 89 04 27 mov %rax,(%r15,%r12,1)
a: 48 b8 f2 f2 00 f3 f3 movabs $0xf3f3f3f3f300f2f2,%rax
11: f3 f3 f3
14: 4b 89 44 27 08 mov %rax,0x8(%r15,%r12,1)
19: 48 89 7c 24 28 mov %rdi,0x28(%rsp)
1e: e8 ef 07 00 00 callq 0x812
23: 48 c7 c0 f4 a5 01 8e mov $0xffffffff8e01a5f4,%rax
* 2a: 48 c1 e8 03 shr $0x3,%rax <-- trapping instruction
2e: 42 8a 04 20 mov (%rax,%r12,1),%al
32: 84 c0 test %al,%al
34: 0f 85 bd 05 00 00 jne 0x5f7
3a: 83 .byte 0x83
3b: 3d 05 82 9a 0c cmp $0xc9a8205,%eax