INFO: task jbd2/vda-8:1767 blocked for more than 430 seconds.
      Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/vda-8      state:D stack:    0 pid: 1767 ppid:     2 flags:0x00000000
Call Trace:
[<ffffffff82bdaf8a>] context_switch kernel/sched/core.c:4940 [inline]
[<ffffffff82bdaf8a>] __schedule+0x506/0x1048 kernel/sched/core.c:6287
[<ffffffff82bdbb32>] schedule+0x66/0x168 kernel/sched/core.c:6366
[<ffffffff82bdbce2>] io_schedule+0x5a/0x88 kernel/sched/core.c:8389
[<ffffffff82bdc8ca>] bit_wait_io+0x12/0x70 kernel/sched/wait_bit.c:209
[<ffffffff82bdc4c6>] __wait_on_bit+0x7c/0xf6 kernel/sched/wait_bit.c:49
[<ffffffff82bdc5ba>] out_of_line_wait_on_bit+0x7a/0x92 kernel/sched/wait_bit.c:64
[<ffffffff804c2b8c>] wait_on_bit_io include/linux/wait_bit.h:101 [inline]
[<ffffffff804c2b8c>] __wait_on_buffer+0x68/0x7c fs/buffer.c:122
[<ffffffff8071b480>] wait_on_buffer include/linux/buffer_head.h:356 [inline]
[<ffffffff8071b480>] jbd2_journal_commit_transaction+0x2b6a/0x4716 fs/jbd2/commit.c:858
[<ffffffff8072946a>] kjournald2+0x11a/0x54e fs/jbd2/journal.c:213
[<ffffffff800770a8>] kthread+0x25c/0x2c6 kernel/kthread.c:319
[<ffffffff800051aa>] ret_from_exception+0x0/0x14

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff83d2b3e8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x32/0x1fa kernel/locking/lockdep.c:6448
6 locks held by kworker/u4:5/909:
2 locks held by getty/1956:
 #0: ffffffe00da3d098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x48 drivers/tty/tty_ldsem.c:340
 #1: ffffffd0107f52e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9a0/0xafa drivers/tty/n_tty.c:2113

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