syzbot

INFO: task kworker/u8:3:53 blocked for more than 143 seconds.
      Not tainted 6.15.0-rc5-syzkaller-00032-g0d8d44db295c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3    state:D
 stack:21960 pid:53    tgid:53    ppid:2      task_flags:0x4208160 flags:0x00004000
Workqueue: writeback wb_workfn
 (flush-7:0)

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x168f/0x4c70 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6860
 io_schedule+0x81/0xe0 kernel/sched/core.c:7742
 folio_wait_bit_common+0x6b0/0xb90 mm/filemap.c:1317
 folio_lock include/linux/pagemap.h:1137 [inline]
 f2fs_sync_node_pages+0x741/0x14a0 fs/f2fs/node.c:2069
 f2fs_write_node_pages+0x303/0x6e0 fs/f2fs/node.c:2208