syzbot

INFO: task syz-executor:6417 blocked for more than 144 seconds.
      Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6417  tgid:6417  ppid:6409   flags:0x00000008
Call trace:
 __switch_to+0x420/0x6dc arch/arm64/kernel/process.c:603
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x13d4/0x2418 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6621
 io_schedule+0x8c/0x124 kernel/sched/core.c:7401
 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1307
 folio_wait_bit+0x30/0x40 mm/filemap.c:1446
 folio_wait_writeback+0x9c/0x100 mm/page-writeback.c:3189
 __filemap_fdatawait_range+0x16c/0x304 mm/filemap.c:532
 filemap_write_and_wait_range+0x1a4/0x23c mm/filemap.c:694
 filemap_write_and_wait include/linux/pagemap.h:66 [inline]
 diSync+0x420/0x698 fs/jfs/jfs_imap.c:249
 diUnmount+0xc4/0x128 fs/jfs/jfs_imap.c:185
 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63
 jfs_put_super+0x90/0x188 fs/jfs/super.c:194
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1696
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380