INFO: task syz-executor943:4108 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D
 stack:    0 pid: 4108 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584
INFO: task syz-executor943:4109 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D
 stack:    0 pid: 4109 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584
INFO: task syz-executor943:4110 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D
 stack:    0 pid: 4110 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584
INFO: task syz-executor943:4111 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D
 stack:    0 pid: 4111 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584
INFO: task syz-executor943:4112 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D
 stack:    0 pid: 4112 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584
INFO: task syz-executor943:4113 blocked for more than 143 seconds.
      Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor943 state:D stack:    0 pid: 4113 ppid:  4107 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5023 [inline]
 __schedule+0xfb4/0x1eec kernel/sched/core.c:6369
 schedule+0x11c/0x1c8 kernel/sched/core.c:6452
 wb_wait_for_completion+0x160/0x2b4 fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x8c4 fs/fs-writeback.c:2745
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x29c fs/super.c:448
 kill_block_super+0x70/0xdc fs/super.c:1396
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 <unknown>:584

Showing all locks held in the system:
4 locks held by kworker/u4:0/9:
 #0: ffff0000c21b8138
 (
(wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff800018937c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: 
ffff0000ce6de650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: ffff0000de9a8868
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200
1 lock held by khungtaskd/27:
 #0: 
ffff800014b026a0 (rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:266
4 locks held by kworker/u4:2/148:
 #0: 
ffff0000c21b8138
 (
(wq_completion)writeback
){+.+.}-{0:0}, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff80001a437c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: ffff0000d063c650 (sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: 
ffff0000de9abce8
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200
2 locks held by getty/3736:
 #0: 
ffff0000d3178098
 (
&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: 
ffff80001a36b2e8
 (&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x414/0x1200 drivers/tty/n_tty.c:2147
4 locks held by kworker/u4:1/4079:
 #0: 
ffff0000c21b8138
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff80001cc07c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: 
ffff0000d04fe650
 (
sb_internal
#2
){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: 
ffff0000de9ac468
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200
2 locks held by syz-executor943/4108:
 #0: ffff0000ca5880e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb8e87d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
){+.+.}-{3:3}, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
2 locks held by syz-executor943/4109:
 #0: 
ffff0000d052c0e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb8ee7d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
2 locks held by syz-executor943/4110:
 #0: 
ffff0000d04fe0e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb9647d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
2 locks held by syz-executor943/4111:
 #0: 
ffff0000c95ec0e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb97a7d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
2 locks held by syz-executor943/4112:
 #0: 
ffff0000ce6de0e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb9c87d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
2 locks held by syz-executor943/4113:
 #0: 
ffff0000d063c0e0
 (
&type->s_umount_key
#41
){+.+.}-{3:3}
, at: deactivate_super+0x100/0x128 fs/super.c:365
 #1: 
ffff0000cb9ce7d8
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x8c4 fs/fs-writeback.c:2743
4 locks held by kworker/u4:3/4174:
 #0: 
ffff0000c21b8138
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff80001cb27c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: 
ffff0000ca588650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: 
ffff0000de9ab568
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200
4 locks held by kworker/u4:4/4175:
 #0: 
ffff0000c21b8138
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff80001cae7c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: 
ffff0000c95ec650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: 
ffff0000dbe45ae8
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200
5 locks held by kworker/1:1/4176:
4 locks held by kworker/u4:5/4177:
 #0: 
ffff0000c21b8138
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x66c/0x1478 kernel/workqueue.c:2279
 #1: 
ffff80001cb37c00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6ac/0x1478 kernel/workqueue.c:2281
 #2: 
ffff0000d052c650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x1e0/0x1018 fs/xfs/libxfs/xfs_bmap.c:4573
 #3: 
ffff0000dbe46268
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x32c/0x678 fs/xfs/xfs_inode.c:200

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