INFO: task kworker/u4:1:13 blocked for more than 143 seconds.
      Tainted: G    B              6.8.0-rc5-syzkaller-g9abbc24128bc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1    state:D stack:0     pid:13    tgid:13    ppid:2      flags:0x00000008
Workqueue: writeback wb_workfn (flush-7:4)
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x1498/0x24b4 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6817
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684
 __mutex_lock kernel/locking/mutex.c:752 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804
 hfs_find_init+0x148/0x1c8
 hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
 hfs_extend_file+0x270/0x1130 fs/hfs/extent.c:401
 hfs_bmap_reserve+0xd0/0x3b4 fs/hfs/btree.c:234
 __hfs_ext_write_extent+0x1a0/0x468 fs/hfs/extent.c:121
 hfs_ext_write_extent+0x148/0x1c0 fs/hfs/extent.c:144
 hfs_write_inode+0xc0/0xc1c fs/hfs/inode.c:427
 write_inode fs/fs-writeback.c:1473 [inline]
 __writeback_single_inode+0x5a8/0x146c fs/fs-writeback.c:1690
 writeback_sb_inodes+0x718/0x1010 fs/fs-writeback.c:1916
 wb_writeback+0x3f4/0xfc0 fs/fs-writeback.c:2092
 wb_do_writeback fs/fs-writeback.c:2239 [inline]
 wb_workfn+0x37c/0xf9c fs/fs-writeback.c:2279
 process_one_work+0x694/0x1204 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:2787
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
INFO: task syz-executor.4:6212 blocked for more than 143 seconds.
      Tainted: G    B              6.8.0-rc5-syzkaller-g9abbc24128bc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:0     pid:6212  tgid:6212  ppid:1      flags:0x00000005
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x1498/0x24b4 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6817
 wb_wait_for_completion+0x154/0x29c fs/fs-writeback.c:192
 __writeback_inodes_sb_nr+0x244/0x2d8 fs/fs-writeback.c:2672
 writeback_inodes_sb_nr fs/fs-writeback.c:2689 [inline]
 writeback_inodes_sb+0x7c/0x90 fs/fs-writeback.c:2704
 sync_filesystem+0xa0/0x218 fs/sync.c:54
 generic_shutdown_super+0x70/0x2b8 fs/super.c:625
 kill_block_super+0x44/0x90 fs/super.c:1680
 deactivate_locked_super+0xc4/0x144 fs/super.c:477
 deactivate_super+0xe0/0x100 fs/super.c:510
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
INFO: lockdep is turned off.