INFO: task kworker/u8:4:62 blocked for more than 146 seconds. Not tainted 6.10.0-rc4-syzkaller-00301-g5f583a3162ff #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:4 state:D stack:24816 pid:62 tgid:62 ppid:2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-7:2) Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0xf15/0x5d00 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 jfs_commit_inode+0x233/0x570 fs/jfs/inode.c:102 jfs_write_inode+0x100/0x240 fs/jfs/inode.c:132 write_inode fs/fs-writeback.c:1497 [inline] __writeback_single_inode+0xb36/0xf90 fs/fs-writeback.c:1716 writeback_sb_inodes+0x611/0x1150 fs/fs-writeback.c:1947 __writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2018 wb_writeback+0x721/0xb50 fs/fs-writeback.c:2129 wb_check_old_data_flush fs/fs-writeback.c:2233 [inline] wb_do_writeback fs/fs-writeback.c:2286 [inline] wb_workfn+0xa54/0xf40 fs/fs-writeback.c:2314 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 3 locks held by kworker/1:0/25: 1 lock held by khungtaskd/30: #0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 2 locks held by kworker/u8:3/51: #0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206 #1: ffffc90000bc7d80 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207 4 locks held by kworker/u8:4/62: #0: ffff888019a89148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206 #1: ffffc900015d7d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207 #2: ffff888023a260e0 (&type->s_umount_key#96){++++}-{3:3}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562 #3: ffff8880661a1448 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_commit_inode+0x233/0x570 fs/jfs/inode.c:102