INFO: task kworker/u8:4:149 blocked for more than 163 seconds.
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1250/0x2a7c kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7017
 rwsem_down_write_slowpath+0x6b4/0x10f4 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1591
 f2fs_down_write fs/f2fs/f2fs.h:2313 [inline]
 f2fs_balance_fs+0x4c0/0x6d8 fs/f2fs/segment.c:464
 f2fs_write_inode+0x3b0/0x68c fs/f2fs/inode.c:826
 write_inode fs/fs-writeback.c:1582 [inline]
 __writeback_single_inode+0x6b0/0x16b8 fs/fs-writeback.c:1802
 __writeback_inodes_wb+0xec/0x228 fs/fs-writeback.c:2107
 kthread+0x5fc/0x75c kernel/kthread.c:463
Workqueue: writeback wb_workfn (flush-7:0)
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1591
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
 #1: ffff800099f07be0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff0000c25100e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_trylock_shared+0x24/0xdc fs/super.c:563
 #2: ffff0000dde1a0e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_trylock_shared+0x24/0xdc fs/super.c:563
2 locks held by getty/6348:
 #0: ffff0000c1c6b5f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x1fc/0x2a0 fs/file.c:1255