INFO: task kworker/u4:58:12421 blocked for more than 143 seconds. Not tainted 6.1.21-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:58 state:D stack:23808 pid:12421 ppid:2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-7:3) Call Trace: 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 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436 kthread+0x268/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cf26870 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cf27070 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffffffff8cf266a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3312: #0: ffff88802820e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2177