INFO: task kworker/1:2:1954 blocked for more than 143 seconds.
      Not tainted 6.1.55-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D
 stack:0     pid:1954  ppid:2      flags:0x00000008
Workqueue: events_long flush_old_commits

Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0xee4/0x1c98 kernel/sched/core.c:6554
 schedule+0xc4/0x170 kernel/sched/core.c:6630
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6689
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 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+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: 
ffff800015a84d70
 (
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
 #0: 
ffff800015a85570
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
 #0: 
ffff800015a84ba0
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305
4 locks held by kworker/1:2/1954:
 #0: 
ffff0000c0021538
 (
(wq_completion)events_long
){+.+.}-{0:0}
, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: 
ffff800023c27c20
 (
(work_completion)(&(&sbi->old_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
 #2: 
ffff0001295960e0
 (
&type->s_umount_key
#56
){++++}-{3:3}
, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97
 #3: 
ffff000127f5a090
 (
&sbi->lock
){+.+.}-{3:3}
, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
2 locks held by getty/3980:
 #0: 
ffff0000d63b1098
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: 
ffff80001bd202f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188
4 locks held by kworker/0:7/4319:
 #0: 
ffff0000c0021538
 (
(wq_completion)events_long
){+.+.}-{0:0}
, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: 
ffff80001e4f7c20
 (
(work_completion)(&(&sbi->old_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
 #2: 
ffff0000d0d040e0
 (
&type->s_umount_key
#56
){++++}-{3:3}
, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97
 #3: 
ffff0000d7c72090
 (
&sbi->lock
){+.+.}-{3:3}
, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
2 locks held by kworker/u4:16/9285:
5 locks held by syz-executor.1/14235:
4 locks held by syz-executor.2/14296:
4 locks held by syz-executor.3/14476:
 #0: 
ffff0000dc1cb098
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: 
ffff0000dc1cb130
 (
&tty->atomic_write_lock
){+.+.}-{3:3}
, at: tty_write_lock drivers/tty/tty_io.c:944 [inline]
, at: do_tty_write drivers/tty/tty_io.c:967 [inline]
, at: file_tty_write+0x18c/0x6f0 drivers/tty/tty_io.c:1089
 #2: 
ffff0000dc1cb2e8
 (&tty->termios_rwsem){++++}-{3:3}, at: n_tty_write+0x1e8/0xebc drivers/tty/n_tty.c:2350
 #3: ffff80001db70380 (&ldata->output_lock){+.+.}-{3:3}, at: process_output_block drivers/tty/n_tty.c:541 [inline]
 #3: ffff80001db70380 (&ldata->output_lock){+.+.}-{3:3}, at: n_tty_write+0x56c/0xebc drivers/tty/n_tty.c:2367

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