INFO: task syz.1.2:4430 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2         state:D stack:0     pid:4430  ppid:4319   flags:0x00000009
Call trace:
 __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xddc/0x1b18 kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 schedule_timeout+0xb4/0x2cc kernel/time/timer.c:2144
 do_wait_for_common+0x284/0x3e4 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x44/0x5c kernel/sched/completion.c:138
 kthread_stop+0x1d0/0x810 kernel/kthread.c:711
 signal_our_withdraw fs/gfs2/util.c:159 [inline]
 gfs2_withdraw+0x48c/0x13a8 fs/gfs2/util.c:354
 gfs2_metatype_check_ii+0x8c/0xac fs/gfs2/util.c:533
 gfs2_metatype_check_i fs/gfs2/util.h:129 [inline]
 gfs2_quota_init+0xb84/0xd54 fs/gfs2/quota.c:1406
 gfs2_make_fs_rw+0x328/0x44c fs/gfs2/super.c:155
 gfs2_fill_super+0x1380/0x19ec fs/gfs2/ops_fstype.c:1271
 get_tree_bdev+0x358/0x544 fs/super.c:1366
 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1327
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5b4/0xe78 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
INFO: task gfs2_quotad:4432 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:gfs2_quotad     state:D stack:0     pid:4432  ppid:2      flags:0x00000048
Call trace:
 __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xddc/0x1b18 kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 bit_wait+0x1c/0xac kernel/sched/wait_bit.c:199
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x158/0x1f0 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 __gfs2_glock_dq+0x59c/0x894 fs/gfs2/glock.c:1646
 gfs2_glock_dq+0x174/0x194 fs/gfs2/glock.c:1718
 gfs2_glock_dq_uninit+0x30/0xe8 fs/gfs2/glock.c:1738
 gfs2_statfs_sync+0x618/0x698 fs/gfs2/super.c:310
 quotad_check_timeo fs/gfs2/quota.c:1519 [inline]
 gfs2_quotad+0x25c/0x4fc fs/gfs2/quota.c:1561
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015227df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: ffff800015228610 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
 #0: ffff800015227480 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
2 locks held by getty/4080:
 #0: ffff0000d8a68098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001ce162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xf9c drivers/tty/n_tty.c:2198
2 locks held by syz.1.2/4430:
 #0: ffff0000c9be20e0 (&type->s_umount_key#47/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x804 fs/super.c:228
 #1: ffff0000dd151248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
 #1: ffff0000dd151248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x424/0x13a8 fs/gfs2/util.c:354
3 locks held by kworker/0:16/4539:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
 #1: ffff8000212c7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
 #2: ffff0000d99ca240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1c8/0x263c drivers/net/netdevsim/fib.c:1491
1 lock held by dhcpcd-run-hook/8553:

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