INFO: task syz-executor.0:6935 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00200-g563047e691f2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:0     pid:6935  tgid:6934  ppid:6613   flags:0x0000000d
Call trace:
 __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6782
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6839
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684
 __mutex_lock kernel/locking/mutex.c:752 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804
 bdev_release+0x168/0x644 block/bdev.c:1087
 blkdev_release+0x20/0x34 block/fops.c:639
 __fput+0x1bc/0x75c fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x230/0x2e0 kernel/task_work.c:239
 get_signal+0x1350/0x152c kernel/signal.c:2690
 do_signal+0x23c/0x391c arch/arm64/kernel/signal.c:1645
 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffff80008f9efda0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336
2 locks held by kworker/u8:4/140:
2 locks held by getty/6186:
 #0: ffff0000d26cd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009b84b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
1 lock held by udevd/6616:
 #0: ffff0000ca9834c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xd0/0xbd0 block/bdev.c:904
1 lock held by syz-executor.0/6935:
 #0: ffff0000ca9834c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x168/0x644 block/bdev.c:1087
1 lock held by syz-executor.0/6957:
 #0: ffff0000ca9834c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xd0/0xbd0 block/bdev.c:904
1 lock held by syz-executor.0/6973:
 #0: ffff0000ca9834c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xd0/0xbd0 block/bdev.c:904

=============================================