INFO: task syz-executor.1:25464 blocked for more than 145 seconds.
      Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26536 pid:25464 ppid:  8477 flags:0x00024004
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
 io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9877
 io_uring_files_cancel include/linux/io_uring.h:16 [inline]
 do_exit+0x60c/0x2b40 kernel/exit.c:787
 do_group_exit+0x125/0x310 kernel/exit.c:929
 get_signal+0x47d/0x2220 kernel/signal.c:2852
 arch_do_signal_or_restart+0x2a9/0x1c40 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+0x17d/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: 0033:0x7f22461e8ae7
RSP: 002b:00007f224375e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f22462fbf68 RCX: 00007f22461e8ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f22462fbf68
RBP: 00007f22462fbf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f22462fbf6c
R13: 00007fffcb8117bf R14: 00007f224375e300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8bb80fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by in:imklog/6234:
 #0: ffff888071f02e30 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
 #1: ffff8880b9c39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478

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

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-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: 2961 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__orc_find+0x5e/0xf0 arch/x86/kernel/unwind_orc.c:50
Code: 89 fe 48 89 fd eb 0c 48 8d 6b 04 49 89 de 49 39 ec 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 <48> 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0
RSP: 0018:ffffc90001ca7968 EFLAGS: 00000003
RAX: 0000000000000001 RBX: ffffffff8da5539c RCX: ffffffff81bd1e6f
RDX: 0000000000000003 RSI: ffffffff8e178a3e RDI: ffffffff8da5536c
RBP: ffffffff8da553a0 R08: ffffffff8e178a3e R09: 0000000000000001
R10: fffff52000394f5c R11: 000000000008808a R12: ffffffff8da553ac
R13: ffffffff8da5536c R14: ffffffff8da5539c R15: dffffc0000000000
FS:  00007f2a2d56b8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2a2ae47000 CR3: 00000000771cf000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
 unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:366 [inline]
 ____kasan_slab_free mm/kasan/common.c:328 [inline]
 __kasan_slab_free+0xd1/0x110 mm/kasan/common.c:374
 kasan_slab_free include/linux/kasan.h:235 [inline]
 __cache_free mm/slab.c:3445 [inline]
 kmem_cache_free.part.0+0x91/0x200 mm/slab.c:3741
 putname fs/namei.c:270 [inline]
 putname+0xfe/0x140 fs/namei.c:256
 do_mkdirat+0x1cd/0x300 fs/namei.c:3918
 __do_sys_mkdir fs/namei.c:3929 [inline]
 __se_sys_mkdir fs/namei.c:3927 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3927
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2a2c826687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe9280ec28 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffe92811b40 RCX: 00007f2a2c826687
RDX: 00007f2a2d297a00 RSI: 00000000000001ed RDI: 0000561f7fce08c0
RBP: 00007ffe9280ec60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffe92811b40 R15: 00007ffe9280f150
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 fe                	mov    %edi,%esi
   2:	48 89 fd             	mov    %rdi,%rbp
   5:	eb 0c                	jmp    0x13
   7:	48 8d 6b 04          	lea    0x4(%rbx),%rbp
   b:	49 89 de             	mov    %rbx,%r14
   e:	49 39 ec             	cmp    %rbp,%r12
  11:	72 4d                	jb     0x60
  13:	4c 89 e0             	mov    %r12,%rax
  16:	48 29 e8             	sub    %rbp,%rax
  19:	48 89 c2             	mov    %rax,%rdx
  1c:	48 c1 e8 3f          	shr    $0x3f,%rax
  20:	48 c1 fa 02          	sar    $0x2,%rdx
  24:	48 01 d0             	add    %rdx,%rax
  27:	48 d1 f8             	sar    %rax
* 2a:	48 8d 5c 85 00       	lea    0x0(%rbp,%rax,4),%rbx <-- trapping instruction
  2f:	48 89 d8             	mov    %rbx,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	42 0f b6 14 38       	movzbl (%rax,%r15,1),%edx
  3b:	48 89 d8             	mov    %rbx,%rax
  3e:	83                   	.byte 0x83
  3f:	e0                   	.byte 0xe0