INFO: task syz-executor.3:16027 blocked for more than 143 seconds.
      Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:25808 pid:16027 ppid: 18930 flags:0x00024004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4969 [inline]
 __schedule+0xb72/0x1460 kernel/sched/core.c:6250
 schedule+0x12b/0x1f0 kernel/sched/core.c:6323
 io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9846
 io_uring_files_cancel include/linux/io_uring.h:16 [inline]
 do_exit+0x281/0x24f0 kernel/exit.c:787
 do_group_exit+0x168/0x2d0 kernel/exit.c:929
 get_signal+0x1740/0x2120 kernel/signal.c:2830
 arch_do_signal_or_restart+0x9c/0x730 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+0x191/0x220 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
 do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f40e6e56ae9
RSP: 002b:00007f40e43ab218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f40e6f6a028 RCX: 00007f40e6e56ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f40e6f6a028
RBP: 00007f40e6f6a020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f40e6f6a02c
R13: 00007fff8af982ff R14: 00007f40e43ab300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8cd1da00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6198:
6 locks held by kworker/u4:9/25496:

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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+0x1dc/0x2d8 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
 kthread+0x468/0x490 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25496 Comm: kworker/u4:9 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:match_held_lock+0x77/0xb0 kernel/locking/lockdep.c:5117
Code: c7 c2 00 cb ae 8f 48 29 d0 48 c1 f8 06 48 ba ab aa aa aa aa aa aa aa 48 0f af d0 bd 01 00 00 00 48 39 ca 74 02 31 ed 89 e8 5b <5d> c3 e8 62 e2 ea f9 31 ed 85 c0 74 f0 83 3d ed d3 f6 03 00 75 e7
RSP: 0018:ffffc9000aa7f668 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880228c6188 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8cd1d960 RDI: ffff8880228c6188
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c3d1d6
R10: fffffbfff1c3d1d6 R11: 0000000000000000 R12: 0000000000000246
R13: ffff8880228c5700 R14: 00000000ffffffff R15: ffffffff8cd1d960
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdbbad18000 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __lock_is_held kernel/locking/lockdep.c:5380 [inline]
 lock_is_held_type+0xb1/0x190 kernel/locking/lockdep.c:5680
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
 trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13
 lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608
 __mutex_lock_common+0x1d5/0x2590 kernel/locking/mutex.c:607
 __mutex_lock kernel/locking/mutex.c:740 [inline]
 mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
 arch_jump_label_transform_queue+0x3f/0xd0 arch/x86/kernel/jump_label.c:136
 __jump_label_update+0x15d/0x350 kernel/jump_label.c:451
 static_key_disable_cpuslocked+0xcc/0x1b0 kernel/jump_label.c:207
 static_key_disable+0x16/0x20 kernel/jump_label.c:215
 toggle_allocation_gate+0x3c8/0x460 mm/kfence/core.c:746
 process_one_work+0x853/0x1140 kernel/workqueue.c:2298
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
 kthread+0x468/0x490 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30
 </TASK>
----------------
Code disassembly (best guess):
   0:	c7 c2 00 cb ae 8f    	mov    $0x8faecb00,%edx
   6:	48 29 d0             	sub    %rdx,%rax
   9:	48 c1 f8 06          	sar    $0x6,%rax
   d:	48 ba ab aa aa aa aa 	movabs $0xaaaaaaaaaaaaaaab,%rdx
  14:	aa aa aa
  17:	48 0f af d0          	imul   %rax,%rdx
  1b:	bd 01 00 00 00       	mov    $0x1,%ebp
  20:	48 39 ca             	cmp    %rcx,%rdx
  23:	74 02                	je     0x27
  25:	31 ed                	xor    %ebp,%ebp
  27:	89 e8                	mov    %ebp,%eax
  29:	5b                   	pop    %rbx
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	c3                   	retq
  2c:	e8 62 e2 ea f9       	callq  0xf9eae293
  31:	31 ed                	xor    %ebp,%ebp
  33:	85 c0                	test   %eax,%eax
  35:	74 f0                	je     0x27
  37:	83 3d ed d3 f6 03 00 	cmpl   $0x0,0x3f6d3ed(%rip)        # 0x3f6d42b
  3e:	75 e7                	jne    0x27