INFO: task syz-executor.4:30947 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.4  state:D stack:26320 pid:30947 ppid:  9527 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: 0033:0x7f0d70d90ae9
RSP: 002b:00007f0d6e2e5218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0d70ea4028 RCX: 00007f0d70d90ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0d70ea4028
RBP: 00007f0d70ea4020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0d70ea402c
R13: 00007ffdd0c87bcf R14: 00007f0d6e2e5300 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
2 locks held by in:imklog/6198:
2 locks held by kworker/u4:6/7690:
 #0: ffff8880b9b395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
 #1: ffffc90003d17d20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273

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

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: 2964 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__rcu_read_lock+0x0/0xb0 kernel/rcu/tree_plugin.h:397
Code: 23 fd ff ff 44 89 f1 80 e1 07 38 c1 0f 8c 28 fd ff ff 4c 89 f7 e8 10 a1 60 00 e9 1b fd ff ff e8 e6 46 b8 08 66 0f 1f 44 00 00 <55> 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 4c 8b 3c 25 c0
RSP: 0018:ffffc9000aa37ee0 EFLAGS: 00000293
RAX: ffffffff815718e6 RBX: ffff88807ae38000 RCX: ffff88807ae38000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807ae38000
RBP: ffffc9000aa37f48 R08: 0000000000000005 R09: ffffffff8184cfcd
R10: 0000000000000006 R11: ffff88807ae38000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  00007ff05b3cc8c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff058914018 CR3: 00000000192df000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 rcu_read_lock include/linux/rcupdate.h:686 [inline]
 __task_pid_nr_ns+0x1b/0x3c0 kernel/pid.c:497
 task_tgid_vnr include/linux/sched.h:1586 [inline]
 __do_sys_getpid+0x1a/0x20 kernel/sys.c:926
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff05a664f17
Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007fffda632668 EFLAGS: 00000202 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 0000555d6a9bc1e0 RCX: 00007ff05a664f17
RDX: 0000000000000000 RSI: 00007fffda632780 RDI: 0000555d6a9bc1e0
RBP: 00007fffda632780 R08: 8aa0324c59a04387 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000b94
R13: 00007fffda632728 R14: 00007fffda632780 R15: 00007fffda632d18
 </TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	ff 44 89 f1          	incl   -0xf(%rcx,%rcx,4)
   4:	80 e1 07             	and    $0x7,%cl
   7:	38 c1                	cmp    %al,%cl
   9:	0f 8c 28 fd ff ff    	jl     0xfffffd37
   f:	4c 89 f7             	mov    %r14,%rdi
  12:	e8 10 a1 60 00       	callq  0x60a127
  17:	e9 1b fd ff ff       	jmpq   0xfffffd37
  1c:	e8 e6 46 b8 08       	callq  0x8b84707
  21:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
* 27:	55                   	push   %rbp <-- trapping instruction
  28:	41 57                	push   %r15
  2a:	41 56                	push   %r14
  2c:	53                   	push   %rbx
  2d:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  34:	fc ff df
  37:	65                   	gs
  38:	4c                   	rex.WR
  39:	8b                   	.byte 0x8b
  3a:	3c 25                	cmp    $0x25,%al
  3c:	c0                   	.byte 0xc0