INFO: task syz-executor:6155 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:11152 pid:6155  tgid:6155  ppid:1      flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5371 [inline]
 __schedule+0x189f/0x4c80 kernel/sched/core.c:6758
 __schedule_loop kernel/sched/core.c:6835 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6850
 bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:237
 __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:77 [inline]
 gfs2_glock_wait+0xc7/0x2b0 fs/gfs2/glock.c:1346
 gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline]
 __gfs2_lookup+0x11b/0x280 fs/gfs2/inode.c:906
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1791
 lookup_slow+0x53/0x70 fs/namei.c:1808
 walk_component+0x2e1/0x410 fs/namei.c:2112
 lookup_last fs/namei.c:2610 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2634
 filename_lookup+0x2a3/0x670 fs/namei.c:2663
 user_path_at+0x3a/0x60 fs/namei.c:3070
 ksys_umount fs/namespace.c:2072 [inline]
 __do_sys_umount fs/namespace.c:2080 [inline]
 __se_sys_umount fs/namespace.c:2078 [inline]
 __x64_sys_umount+0xf1/0x170 fs/namespace.c:2078
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2754987057
RSP: 002b:00007ffc91c54c48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f2754a01894 RCX: 00007f2754987057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc91c54d00
RBP: 00007ffc91c54d00 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc91c55df0
R13: 00007f2754a01894 R14: 00005555807f14a8 R15: 00000000000000da
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:8/2922:
2 locks held by getty/5587:
 #0: ffff88803488a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6155:
 #0: ffff888049873d78 (&type->i_mutex_dir_key#20){.+.+}-{4:4}, at: inode_lock_shared include/linux/fs.h:873 [inline]
 #0: ffff888049873d78 (&type->i_mutex_dir_key#20){.+.+}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1807
1 lock held by syz.0.1554/12567:
 #0: ffff8880b863e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 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:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 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 UID: 0 PID: 5199 Comm: klogd Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__this_cpu_preempt_check+0x0/0x20 lib/smp_processor_id.c:65
Code: fe 34 f5 e8 82 9a 37 f5 eb a8 e8 ab e0 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 89 fe 48 c7 c7 00 ed 5f 8c e9 bd fe ff ff 66 2e 0f
RSP: 0018:ffffc900000078e8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff818ff839
RDX: 0000000000000000 RSI: ffff8880b863e998 RDI: ffffffff8c0aaba0
RBP: 0000000000000001 R08: ffffffff901ab1f7 R09: 1ffffffff203563e
R10: dffffc0000000000 R11: fffffbfff203563f R12: 0000000000000046
R13: ffff88807d72bc00 R14: 00000000ffffffff R15: ffff8880b863e998
FS:  00007f928b727380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555791f84a8 CR3: 000000007d0aa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
 lock_is_held_type+0x101/0x190 kernel/locking/lockdep.c:5922
 lock_is_held include/linux/lockdep.h:249 [inline]
 lockdep_assert_rq_held kernel/sched/sched.h:1510 [inline]
 cpuacct_charge+0xf8/0x330 kernel/sched/cpuacct.c:339
 cgroup_account_cputime include/linux/cgroup.h:716 [inline]
 update_curr_task+0xf0/0x330 kernel/sched/fair.c:1161
 update_curr+0x52f/0xda0 kernel/sched/fair.c:1235
 enqueue_entity+0x63/0x1420 kernel/sched/fair.c:5396
 enqueue_task_fair+0x292/0xd40 kernel/sched/fair.c:7034
 enqueue_task+0x72/0x330 kernel/sched/core.c:2063
 activate_task kernel/sched/core.c:2110 [inline]
 ttwu_do_activate+0x1d1/0x760 kernel/sched/core.c:3722
 ttwu_queue kernel/sched/core.c:3995 [inline]
 try_to_wake_up+0x89b/0x1470 kernel/sched/core.c:4323
 hrtimer_wakeup+0x62/0x80 kernel/time/hrtimer.c:1975
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5245
Code: c9 50 e8 39 fc 0b 00 48 83 c4 08 4c 89 f7 e8 fd 39 00 00 0f 1f 44 00 00 4c 89 f7 e8 60 1a 66 0a e8 3b 55 38 00 fb 48 8b 5d c0 <48> 8d bb 00 16 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc90003277808 EFLAGS: 00000286
RAX: 899cbda83341ff00 RBX: ffff88807d72bc00 RCX: ffffffff9a3de903
RDX: dffffc0000000000 RSI: ffffffff8c0a99a0 RDI: ffffffff8c5fed00
RBP: ffffc90003277850 R08: ffffffff901ab1f7 R09: 1ffffffff203563e
R10: dffffc0000000000 R11: fffffbfff203563f R12: 1ffff110170c7ef5
R13: dffffc0000000000 R14: ffff8880b863e980 R15: ffff8880b863f7a8
 context_switch kernel/sched/core.c:5374 [inline]
 __schedule+0x18a7/0x4c80 kernel/sched/core.c:6758
 __schedule_loop kernel/sched/core.c:6835 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6850
 syslog_print+0x2a3/0x9c0 kernel/printk/printk.c:1633
 do_syslog+0x3c2/0x820 kernel/printk/printk.c:1785
 __do_sys_syslog kernel/printk/printk.c:1877 [inline]
 __se_sys_syslog kernel/printk/printk.c:1875 [inline]
 __x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f928b888fa7
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:00007ffc5637e2f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f928ba274a0 RCX: 00007f928b888fa7
RDX: 00000000000003ff RSI: 00007f928ba274a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: c9487b9383684e39
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f928ba274a0
R13: 00007f928ba17212 R14: 00007f928ba2756b R15: 00007f928ba2756b
 </TASK>