INFO: task syz-executor.4:24031 blocked for more than 143 seconds.
Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27528 pid:24031 ppid: 3630 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10368 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10438
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8914a890e9
RSP: 002b:00007f8915b4b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f8914b9bf68 RCX: 00007f8914a890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8914b9bf68
RBP: 00007f8914b9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8914b9bf6c
R13: 00007ffdadf67d7f R14: 00007f8915b4b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3276:
#0: ffff88801d912098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
2 locks held by kworker/u4:11/5821:
#0: ffff8880b9c39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:554
#1: ffff8880b9c27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:889
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #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+0x1e6/0x230 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+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24049 Comm: iou-wrk-24031 Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:431 [inline]
RIP: 0010:lock_release+0x14e/0x720 kernel/locking/lockdep.c:5660
Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 69 05 00 00 45 8b 8e 5c 0a 00 00 45 85 c9 0f 85 9e 02 00 00 9c 8f 04 24 fa <48> c7 c7 e0 5c cc 89 e8 b6 12 02 08 48 89 da 83 e3 07 48 b8 00 00
RSP: 0018:ffffc90015cff6b0 EFLAGS: 00000046
RAX: 0000000000000007 RBX: ffffffff8db729ac RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888076b00a5c
RBP: 1ffff92002b9fed8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802721d078
R13: ffff88802721d000 R14: ffff888076b00000 R15: dffffc0000000000
FS: 00007f8915b4b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e67ddd0 CR3: 000000001fb93000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194
inotify_read+0x120/0x820 fs/notify/inotify/inotify_user.c:247
loop_rw_iter+0x1be/0x540 fs/io_uring.c:3557
io_iter_do_read fs/io_uring.c:3738 [inline]
io_iter_do_read fs/io_uring.c:3733 [inline]
io_read+0xf03/0x12a0 fs/io_uring.c:3852
io_issue_sqe+0x75d/0x90c0 fs/io_uring.c:7122
io_wq_submit_work+0x22a/0x630 fs/io_uring.c:7295
io_worker_handle_work+0xb1c/0x1ab0 fs/io-wq.c:597
io_wqe_worker+0x637/0xdb0 fs/io-wq.c:644
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
----------------
Code disassembly (best guess):
0: 48 89 f8 mov %rdi,%rax
3: 83 e0 07 and $0x7,%eax
6: 83 c0 03 add $0x3,%eax
9: 38 d0 cmp %dl,%al
b: 7c 08 jl 0x15
d: 84 d2 test %dl,%dl
f: 0f 85 69 05 00 00 jne 0x57e
15: 45 8b 8e 5c 0a 00 00 mov 0xa5c(%r14),%r9d
1c: 45 85 c9 test %r9d,%r9d
1f: 0f 85 9e 02 00 00 jne 0x2c3
25: 9c pushfq
26: 8f 04 24 popq (%rsp)
29: fa cli
* 2a: 48 c7 c7 e0 5c cc 89 mov $0xffffffff89cc5ce0,%rdi <-- trapping instruction
31: e8 b6 12 02 08 callq 0x80212ec
36: 48 89 da mov %rbx,%rdx
39: 83 e3 07 and $0x7,%ebx
3c: 48 rex.W
3d: b8 .byte 0xb8