INFO: task syz-executor992:4308 blocked for more than 143 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor992 state:D
 stack:0     pid:4308  ppid:4307   flags:0x0000000c
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x944 fs/fs-writeback.c:2739
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 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 syz-executor992:4309 blocked for more than 143 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor992 state:D
 stack:0     pid:4309  ppid:4307   flags:0x0000000c
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x944 fs/fs-writeback.c:2739
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 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 syz-executor992:4310 blocked for more than 143 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor992 state:D
 stack:0     pid:4310  ppid:4307   flags:0x0000000c
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x944 fs/fs-writeback.c:2739
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 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 syz-executor992:4311 blocked for more than 143 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor992 state:D
 stack:0     pid:4311  ppid:4307   flags:0x0000000c
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x944 fs/fs-writeback.c:2739
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 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 syz-executor992:4312 blocked for more than 144 seconds.
      Not tainted 6.1.131-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor992 state:D
 stack:0     pid:4312  ppid:4307   flags:0x0000000c
Call trace:
 __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5243 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6560
 schedule+0xc4/0x170 kernel/sched/core.c:6636
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:191
 sync_inodes_sb+0x220/0x944 fs/fs-writeback.c:2739
 sync_filesystem+0x160/0x218 fs/sync.c:64
 generic_shutdown_super+0x70/0x328 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Showing all locks held in the system:
3 locks held by kworker/0:0/7:
4 locks held by kworker/u4:0/9:
 #0: 
ffff0000c2e4d938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: 
ffff80001d2c7c20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: 
ffff0000d45c6650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x21c/0x10d4 fs/xfs/libxfs/xfs_bmap.c:4507
 #3: 
ffff0000e1332018
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x218/0x4e4 fs/xfs/xfs_inode.c:211
4 locks held by kworker/u4:1/11:
 #0: 
ffff0000c2e4d938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: 
ffff80001d2e7c20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: 
ffff0000d8e86650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x21c/0x10d4 fs/xfs/libxfs/xfs_bmap.c:4507
 #3: 
ffff0000e126af98
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x218/0x4e4 fs/xfs/xfs_inode.c:211
1 lock held by rcu_tasks_kthre/12:
 #0: 
ffff800015cd79b0
 (
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: 
ffff800015cd81b0
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
 #0: 
ffff800015cd77e0
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
4 locks held by kworker/u4:2/39:
 #0: 
ffff0000c2e4d938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: 
ffff80001d7e7c20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: 
ffff0000cebfe650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x21c/0x10d4 fs/xfs/libxfs/xfs_bmap.c:4507
 #3: 
ffff0000e1330118
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x218/0x4e4 fs/xfs/xfs_inode.c:211
4 locks held by kworker/u4:4/460:
 #0: 
ffff0000c2e4d938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: 
ffff800021737c20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: 
ffff0000ce70c650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x21c/0x10d4 fs/xfs/libxfs/xfs_bmap.c:4507
 #3: 
ffff0000e126c6d8
 (
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
, at: xfs_ilock+0x218/0x4e4 fs/xfs/xfs_inode.c:211
4 locks held by kworker/u4:5/1659:
 #0: 
ffff0000c2e4d938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x6bc/0x1484 kernel/workqueue.c:2265
 #1: 
ffff800025ba7c20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6fc/0x1484 kernel/workqueue.c:2267
 #2: 
ffff0000d0184650
 (
sb_internal
#2
){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x21c/0x10d4 fs/xfs/libxfs/xfs_bmap.c:4507
 #3: 
ffff0000e1333f18
 (
&xfs_nondir_ilock_class
){++++}-{3:3}, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline]
){++++}-{3:3}, at: xfs_ilock+0x218/0x4e4 fs/xfs/xfs_inode.c:211
2 locks held by getty/4057:
 #0: 
ffff0000d5f9f098
 (
&tty->ldisc_sem
){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: 
ffff80001d8f02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2198
2 locks held by syz-executor992/4308:
 #0: 
ffff0000d45c60e0 (&type->s_umount_key#40
){+.+.}-{3:3}
, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: 
ffff0000cebc67d0
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2737
2 locks held by syz-executor992/4309:
 #0: 
ffff0000d8e860e0
 (&type->s_umount_key#40
){+.+.}-{3:3}
, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: 
ffff0000cebdc7d0
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2737
2 locks held by syz-executor992/4310:
 #0: 
ffff0000ce70c0e0
 (
&type->s_umount_key
#40
){+.+.}-{3:3}
, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: 
ffff0000cebf27d0
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2737
2 locks held by syz-executor992/4311:
 #0: 
ffff0000d01840e0
 (
&type->s_umount_key
#40
){+.+.}-{3:3}
, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: 
ffff0000cec587d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2737
2 locks held by syz-executor992/4312:
 #0: ffff0000cebfe0e0
 (
&type->s_umount_key
#40
){+.+.}-{3:3}
, at: deactivate_super+0xe8/0x110 fs/super.c:362
 #1: 
ffff0000cec5e7d0
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2737

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