INFO: task kworker/u4:20:11203 blocked for more than 143 seconds.
      Not tainted 6.1.37-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:20   state:D stack:20504 pid:11203 ppid:2      flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x132c/0x4330 kernel/sched/core.c:6554
 schedule+0xbf/0x180 kernel/sched/core.c:6630
 schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
 do_wait_for_common+0x441/0x5e0 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_ring_exit_work+0x6b4/0x794 io_uring/io_uring.c:2775
 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289
 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436
 kthread+0x26e/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8cf27570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8cf27d70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8cf273a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3297:
 #0: ffff888141276098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:16/3954:
 #0: ffff888012469138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90004f9fd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
2 locks held by kworker/u4:20/11203:
 #0: ffff888012469138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90014927d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
1 lock held by syz-executor.0/1547:
1 lock held by syz-executor.3/1546:
 #0: ffff88809e58a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1733 [inline]
 #0: ffff88809e58a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_setsockopt+0x76e/0x16c0 net/packet/af_packet.c:3793
2 locks held by syz-executor.4/1549:
 #0: ffff888074991410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #0: ffff888074991410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:651 [inline]
 #0: ffff888074991410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1370
 #1: ffff88808dc84630 (sk_lock-AF_QIPCRTR){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1733 [inline]
 #1: ffff88808dc84630 (sk_lock-AF_QIPCRTR){+.+.}-{0:0}, at: qrtr_release+0x50/0x290 net/qrtr/af_qrtr.c:1208
1 lock held by syz-executor.2/1554:
 #0: ffff8880186434f0 (sk_lock-AF_QIPCRTR){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1733 [inline]
 #0: ffff8880186434f0 (sk_lock-AF_QIPCRTR){+.+.}-{0:0}, at: qrtr_recvmsg+0xfd/0xc80 net/qrtr/af_qrtr.c:1035
1 lock held by syz-executor.2/1559:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.37-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xf18/0xf60 kernel/hung_task.c:377
 kthread+0x26e/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3000 Comm: udevd Not tainted 6.1.37-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:kernfs_dop_revalidate+0x461/0x590
Code: b6 04 08 84 c0 0f 85 26 01 00 00 41 0f b7 5d 00 89 de 83 e6 20 31 ff e8 4d e4 72 ff 83 e3 20 75 1c e8 63 e1 72 ff 48 8b 1c 24 <e9> a6 00 00 00 e8 55 e1 72 ff 48 8b 1c 24 e9 98 00 00 00 49 81 c7
RSP: 0018:ffffc900031af848 EFLAGS: 00000293
RAX: ffffffff8216f9dd RBX: ffff8880124678d8 RCX: ffff88807ccabb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888014a64740 R08: ffffffff8216f9d3 R09: ffffed100294c8e9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880799b1500
R13: ffff888012775098 R14: ffff888014a64770 R15: ffff8880799b1490
FS:  00007f4c65890c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555636c848 CR3: 0000000028b84000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 d_revalidate fs/namei.c:856 [inline]
 lookup_fast+0x1ec/0x490 fs/namei.c:1646
 walk_component fs/namei.c:1989 [inline]
 link_path_walk+0x604/0xee0 fs/namei.c:2320
 path_lookupat+0xa9/0x450 fs/namei.c:2473
 filename_lookup+0x251/0x600 fs/namei.c:2503
 vfs_statx+0x107/0x4b0 fs/stat.c:229
 vfs_fstatat fs/stat.c:267 [inline]
 __do_sys_newfstatat fs/stat.c:437 [inline]
 __se_sys_newfstatat fs/stat.c:431 [inline]
 __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4c659665f4
Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffd2dd18148 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffd2dd19ae8 RCX: 00007f4c659665f4
RDX: 00007ffd2dd18158 RSI: 00007ffd2dd185e8 RDI: 00000000ffffff9c
RBP: 00007ffd2dd181e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd2dd185e8
R13: 00007ffd2dd18158 R14: 000055be91f98910 R15: 0000000000000000
 </TASK>