INFO: task syz-executor.0:20995 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:28872 pid:20995 ppid: 19835 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4972 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6253
 schedule+0xd2/0x260 kernel/sched/core.c:6326
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
 __mutex_lock_common kernel/locking/mutex.c:680 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
 io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9523
 io_uring_release+0x42/0x46 fs/io_uring.c:9552
 __fput+0x286/0x9f0 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/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: 0033:0x7fdda5245b32
RSP: 002b:00007fdda279a0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 0000000020ffd000 RBX: 0000000000008011 RCX: 00007fdda5245b32
RDX: 0000000000000003 RSI: 0000000000100000 RDI: 0000000020ffd000
RBP: 0000000020ffd000 R08: 0000000000000003 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000140
R13: 0000000020ffd000 R14: 0000000020000100 R15: 0000000020002000
 </TASK>

Showing all locks held in the system:
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/6437:
 #0: ffff888022f12170 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.0/20988:
1 lock held by syz-executor.0/20995:
 #0: ffff8880131940a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9523
1 lock held by syz-executor.0/21026:

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

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:
 <TASK>
 __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
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24561 Comm: kworker/u4:12 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__this_cpu_preempt_check+0xd/0x20 lib/smp_processor_id.c:66
Code: 00 00 48 c7 c6 20 91 04 8a 48 c7 c7 60 91 04 8a e9 78 fe ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 0f 1f 44 00 00 48 89 ee 5d <48> c7 c7 a0 91 04 8a e9 57 fe ff ff cc cc cc cc cc cc cc eb 1e 0f
RSP: 0018:ffffc9000a107b98 EFLAGS: 00000086
RAX: 0000000000000001 RBX: 1ffff92001420f76 RCX: b0868ee9661133b1
RDX: 1ffff110108aa583 RSI: ffffffff89abf9c0 RDI: ffffffff89abf9c0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff74a07
R10: fffffbfff1fee940 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb81120 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8ca2b5000 CR3: 000000006c429000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
 lock_acquire kernel/locking/lockdep.c:5639 [inline]
 lock_acquire+0x1bb/0x510 kernel/locking/lockdep.c:5602
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:688 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:723
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 c7 c6 20 91 04 8a 	mov    $0xffffffff8a049120,%rsi
   9:	48 c7 c7 60 91 04 8a 	mov    $0xffffffff8a049160,%rdi
  10:	e9 78 fe ff ff       	jmpq   0xfffffe8d
  15:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  1c:	00
  1d:	55                   	push   %rbp
  1e:	48 89 fd             	mov    %rdi,%rbp
  21:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  26:	48 89 ee             	mov    %rbp,%rsi
  29:	5d                   	pop    %rbp
* 2a:	48 c7 c7 a0 91 04 8a 	mov    $0xffffffff8a0491a0,%rdi <-- trapping instruction
  31:	e9 57 fe ff ff       	jmpq   0xfffffe8d
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	eb 1e                	jmp    0x5d
  3f:	0f                   	.byte 0xf