INFO: task syz-executor:11164 blocked for more than 144 seconds.
      Tainted: G             L     Y syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22240 pid:11164 tgid:11164 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5581 [inline]
 __schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
 __schedule_loop kernel/sched/core.c:7461 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7476
 bit_wait+0x13/0x110 kernel/sched/wait_bit.c:248
 __wait_on_bit+0xac/0x300 kernel/sched/wait_bit.c:52
 out_of_line_wait_on_bit+0x13b/0x190 kernel/sched/wait_bit.c:67
 wait_on_bit include/linux/wait_bit.h:78 [inline]
 gfs2_glock_wait+0xb3/0x2a0 fs/gfs2/glock.c:1239
 gfs2_glock_nq_init fs/gfs2/glock.h:253 [inline]
 __gfs2_lookup+0x136/0x2b0 fs/gfs2/inode.c:1006
 __lookup_slow+0x1fb/0x2f0 fs/namei.c:1919
 lookup_slow+0x59/0x80 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 lookup_last fs/namei.c:2789 [inline]
 path_lookupat+0x3f5/0x8c0 fs/namei.c:2813
 filename_lookup+0x265/0x5d0 fs/namei.c:2842
 user_path_at+0x40/0x160 fs/namei.c:3641
 ksys_umount fs/namespace.c:2080 [inline]
 __do_sys_umount fs/namespace.c:2088 [inline]
 __se_sys_umount fs/namespace.c:2086 [inline]
 __x64_sys_umount+0xf6/0x170 fs/namespace.c:2086
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f69d779f397
RSP: 002b:00007ffff5a6c8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f69d78344bb RCX: 00007f69d779f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffff5a6c970
RBP: 00007ffff5a6c970 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffff5a6da60
R13: 00007f69d78344bb R14: 000000000006bf7e R15: 00007ffff5a6fc20
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Tainted: G             L     Y syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP, [Y]=FORCED_BIND
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:377 [inline]
 watchdog+0x1058/0x10d0 kernel/hung_task.c:598
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>