INFO: task kworker/u4:1:11 blocked for more than 147 seconds.
      Not tainted 6.1.21-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1    state:D stack:21080 pid:11    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:5)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5238 [inline]
 __schedule+0x132c/0x4330 kernel/sched/core.c:6551
 schedule+0xbf/0x180 kernel/sched/core.c:6627
 rwsem_down_write_slowpath+0xe93/0x14a0 kernel/locking/rwsem.c:1189
 f2fs_down_write fs/f2fs/f2fs.h:2207 [inline]
 f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:418
 f2fs_write_inode+0x4c3/0x540 fs/f2fs/inode.c:757
 write_inode fs/fs-writeback.c:1440 [inline]
 __writeback_single_inode+0x67d/0x11e0 fs/fs-writeback.c:1652
 writeback_sb_inodes+0xc21/0x1ac0 fs/fs-writeback.c:1878
 __writeback_inodes_wb+0x114/0x400 fs/fs-writeback.c:1949
 wb_writeback+0x4b1/0xe10 fs/fs-writeback.c:2054
 wb_check_old_data_flush fs/fs-writeback.c:2154 [inline]
 wb_do_writeback fs/fs-writeback.c:2207 [inline]
 wb_workfn+0xbec/0x1020 fs/fs-writeback.c:2235