INFO: task syz-executor.0:5023 blocked for more than 143 seconds.
      Not tainted 6.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:19568 pid:5023  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x187b/0x4900 kernel/sched/core.c:6669
 schedule+0xc3/0x180 kernel/sched/core.c:6745
 schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
 gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2198
 gfs2_put_super+0x827/0x890 fs/gfs2/super.c:642
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x84/0xf0 fs/super.c:1407
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe87c28d7f7
RSP: 002b:00007ffc1f829dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe87c28d7f7
RDX: 00007ffc1f829eab RSI: 000000000000000a RDI: 00007ffc1f829ea0
RBP: 00007ffc1f829ea0 R08: 00000000ffffffff R09: 00007ffc1f829c70
R10: 000055555754b893 R11: 0000000000000246 R12: 00007fe87c2d643b
R13: 00007ffc1f82af60 R14: 000055555754b810 R15: 00007ffc1f82afa0
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
 #0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4749:
 #0: ffff888029070098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.0/5023:
 #0: ffff88803e9fa0e0 (&type->s_umount_key#106){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-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+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4436 Comm: klogd Not tainted 6.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__sanitizer_cov_trace_switch+0x83/0x110
Code: 24 e9 a9 00 00 00 41 b8 01 00 00 00 4d 85 d2 75 14 e9 99 00 00 00 41 b8 05 00 00 00 4d 85 d2 0f 84 8a 00 00 00 4c 8b 4c 24 20 <65> 4c 8b 1d 45 2b 78 7e 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b
RSP: 0018:ffffc9000313f6f8 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000030 RCX: ffff88807e2d3b80
RDX: ffff0a0000000500 RSI: ffffffff8e3f0080 RDI: 0000000000000030
RBP: ffffc9000313f810 R08: 0000000000000001 R09: ffffffff8aaa7b2a
R10: 0000000000000005 R11: ffff88807e2d3b80 R12: ffffffff8aeb4ba7
R13: ffffffff8aeb4ba7 R14: dffffc0000000000 R15: 1ffffffff15d6974
FS:  00007f44b608a380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055af41920600 CR3: 0000000027e35000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 format_decode+0x5ba/0x1bb0 lib/vsprintf.c:2568
 vsnprintf+0x14a/0x1d80 lib/vsprintf.c:2769
 sprintf+0xda/0x120 lib/vsprintf.c:3021
 print_time kernel/printk/printk.c:1327 [inline]
 info_print_prefix+0x16b/0x300 kernel/printk/printk.c:1353
 record_print_text kernel/printk/printk.c:1402 [inline]
 syslog_print+0x4b7/0x9b0 kernel/printk/printk.c:1613
 do_syslog+0x505/0x890 kernel/printk/printk.c:1732
 __do_sys_syslog kernel/printk/printk.c:1824 [inline]
 __se_sys_syslog kernel/printk/printk.c:1822 [inline]
 __x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1822
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f44b61ebfa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffcef797468 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f44b638a4a0 RCX: 00007f44b61ebfa7
RDX: 00000000000003ff RSI: 00007f44b638a4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 7be662418932cc97
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f44b638a4a0
R13: 00007f44b637a212 R14: 00007f44b638a51e R15: 00007f44b638a51e
 </TASK>