INFO: task kworker/u4:0:6263 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/u4:0    state:D stack:0     pid:6263  tgid:6263  ppid:2      flags:0x00000008
Workqueue: writeback wb_workfn (flush-7:1)
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
 rwsem_down_write_slowpath+0xcfc/0x1aa0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580
 f2fs_down_write fs/f2fs/f2fs.h:2138 [inline]
 f2fs_balance_fs+0x428/0x65c fs/f2fs/segment.c:437
 f2fs_write_inode+0x37c/0x3f0 fs/f2fs/inode.c:794
 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
 __writeback_inodes_wb+0xec/0x234 fs/fs-writeback.c:1987
 wb_writeback+0x408/0xfc0 fs/fs-writeback.c:2094
 wb_check_background_flush fs/fs-writeback.c:2164 [inline]
 wb_do_writeback fs/fs-writeback.c:2252 [inline]
 wb_workfn+0xc00/0xf9c 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: lockdep is turned off.