INFO: task kworker/1:10:8936 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:0 pid:8936 ppid:2 flags:0x00000008 Workqueue: events_long flush_old_commits Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5343 [inline] __schedule+0x1368/0x23b8 kernel/sched/core.c:6669 schedule+0xc4/0x170 kernel/sched/core.c:6745 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6804 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_sync_fs fs/reiserfs/super.c:76 [inline] flush_old_commits+0x1b0/0x2b8 fs/reiserfs/super.c:111 process_one_work+0x788/0x12d4 kernel/workqueue.c:2405 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2552 kthread+0x288/0x310 kernel/kthread.c:379 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853 INFO: task syz-executor.3:9487 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:9487 ppid:6018 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5343 [inline] __schedule+0x1368/0x23b8 kernel/sched/core.c:6669 schedule+0xc4/0x170 kernel/sched/core.c:6745 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6804 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x128/0x45c fs/reiserfs/namei.c:364 lookup_open fs/namei.c:3470 [inline] open_last_lookups fs/namei.c:3560 [inline] path_openat+0xc54/0x27f8 fs/namei.c:3788 do_filp_open+0x1bc/0x3cc fs/namei.c:3818 do_sys_openat2+0x128/0x3d8 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1383 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffff80008e0c16d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffff80008e0c1a90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffff80008e0c1500 (rcu_read_lock){....}-{1:2} , at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 4 locks held by kworker/1:3/5558: #0: ffff0000c0021538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2378 #1: ffff800098817c20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2380 #2: ffff0001259720e0 (&type->s_umount_key#74){++++}-{3:3}, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97 #3: ffff000124006090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 2 locks held by getty/5731: #0: ffff0000d502f098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800092eb02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2176 4 locks held by kworker/1:10/8936: #0: ffff0000c0021538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2378 #1: ffff8000988a7c20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2380 #2: ffff0001280480e0 (&type->s_umount_key#74 ){++++}-{3:3}, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97 #3: ffff0000cf0b3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 4 locks held by syz-executor.3/9462: 2 locks held by syz-executor.3/9487: #0: ffff0001299fa400 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline] ffff0001299fa400 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: open_last_lookups fs/namei.c:3559 [inline] ffff0001299fa400 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: path_openat+0x5e0/0x27f8 fs/namei.c:3788 #1: ffff0000cf0b3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 4 locks held by syz-executor.0/9531: 2 locks held by syz-executor.0/9539: #0: ffff00013079aaa0 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline] #0: ffff00013079aaa0 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: open_last_lookups fs/namei.c:3559 [inline] #0: ffff00013079aaa0 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: path_openat+0x5e0/0x27f8 fs/namei.c:3788 #1: ffff000124006090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 2 locks held by syz-executor.5/10855: =============================================