INFO: task kworker/u8:14:8871 blocked for more than 143 seconds.
      Not tainted 6.15.0-rc4-syzkaller-00189-g2bfcee565c3a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:14   state:D stack:22680 pid:8871  tgid:8871  ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:5)
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
 do_writepages+0x3ae/0x7b0 mm/page-writeback.c:2656
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6b5/0x1000 fs/fs-writeback.c:1976
 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x409/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task syz.9.795:11815 blocked for more than 145 seconds.
      Not tainted 6.15.0-rc4-syzkaller-00189-g2bfcee565c3a #0
 sync_inodes_sb+0x1bb/0xa10 fs/fs-writeback.c:2833
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe34ab8e969
RSP: 002b:00007fe34babe038 EFLAGS: 00000246
 #0: 
ffff8880b88399d8
 (
&rq->__lock