INFO: task syz-executor.2:5113 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc5-next-20240426-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:18896 pid:5113  tgid:5113  ppid:1      flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:199
 __wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_glock_wait+0xc7/0x2b0 fs/gfs2/glock.c:1394
 gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline]
 __gfs2_lookup+0x11b/0x280 fs/gfs2/inode.c:905
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1692
 lookup_slow+0x53/0x70 fs/namei.c:1709
 walk_component+0x2e1/0x410 fs/namei.c:2004
 lookup_last fs/namei.c:2469 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2493
 filename_lookup+0x256/0x610 fs/namei.c:2522
 user_path_at_empty+0x42/0x60 fs/namei.c:2929
 user_path_at include/linux/namei.h:58 [inline]
 ksys_umount fs/namespace.c:1916 [inline]
 __do_sys_umount fs/namespace.c:1924 [inline]
 __se_sys_umount fs/namespace.c:1922 [inline]
 __x64_sys_umount+0xf4/0x170 fs/namespace.c:1922
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2724c7f1d7
RSP: 002b:00007ffd7b3f9618 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f2724cc93b9 RCX: 00007f2724c7f1d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd7b3f96d0
RBP: 00007ffd7b3f96d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd7b3fa7c0
R13: 00007f2724cc93b9 R14: 000055557a307430 R15: 000000000000001e
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4844:
 #0: ffff88802ac8d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.2/5113:
 #0: ffff88806076d1f0 (&type->i_mutex_dir_key#12){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:801 [inline]
 #0: ffff88806076d1f0 (&type->i_mutex_dir_key#12){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708

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

NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc5-next-20240426-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 785 Comm: kworker/0:2 Not tainted 6.9.0-rc5-next-20240426-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
RIP: 0010:nsim_dev_trap_report_work+0x25d/0xaa0 drivers/net/netdevsim/dev.c:850
Code: 00 00 4c 89 24 24 48 89 6c 24 08 bf c0 0e 00 00 be 20 08 00 00 31 d2 b9 ff ff ff ff e8 7c da 47 02 48 85 c0 0f 84 76 04 00 00 <49> 89 c4 48 8d 98 d8 00 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38
RSP: 0018:ffffc90003887ae8 EFLAGS: 00000282
RAX: ffff88803ba1a780 RBX: 0000000000000001 RCX: ffff88801fc69e00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807d3b8ee0
RBP: 0000000000000068 R08: ffff88807d3b8ee3 R09: 1ffff1100fa771dc
R10: dffffc0000000000 R11: ffffed100fa771dd R12: fffffffffffffffa
R13: dffffc0000000000 R14: ffff8880638f81e0 R15: ffff88802a7b08a8
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa782a6f580 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 process_one_work kernel/workqueue.c:3222 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3303
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3384
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>