INFO: task syz-executor.4:26447 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:0     pid:26447 tgid:26445 ppid:25489  flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x1498/0x24b4 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6817
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874
 __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+0x100/0x870 block/bdev.c:969
 blkdev_release+0x40/0x54 block/fops.c:631
 __fput+0x30c/0x738 fs/file_table.c:376
 ____fput+0x20/0x30 fs/file_table.c:404
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 get_signal+0x13f4/0x15ec kernel/signal.c:2669
 do_signal+0x238/0x3e8c arch/arm64/kernel/signal.c:1308
 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:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffff80008ee74ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:297
2 locks held by getty/5929:
 #0: ffff0000d251f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800093fd02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
2 locks held by kworker/u4:13/17996:
3 locks held by kworker/u4:19/20368:
1 lock held by udevd/25140:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by udevd/25227:
 #0: ffff0000ca9b44c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.4/26447:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x100/0x870 block/bdev.c:969
1 lock held by syz-executor.1/26530:
 #0: ffff0000ca9b44c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x100/0x870 block/bdev.c:969
1 lock held by udevd/26542:
 #0: ffff0000ca9174c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by udevd/26545:
 #0: ffff0000ca9ce4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.0/26548:
 #0: ffff0000ca9174c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x100/0x870 block/bdev.c:969
1 lock held by syz-executor.4/26582:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.4/26583:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.3/26661:
 #0: ffff0000ca9ce4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x100/0x870 block/bdev.c:969
1 lock held by syz-executor.1/26692:
 #0: ffff0000ca9b44c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.0/26702:
 #0: ffff0000ca9174c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.4/26786:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.3/26808:
 #0: ffff0000ca9ce4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.1/26908:
 #0: ffff0000ca9b44c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.0/26910:
 #0: ffff0000ca9174c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.4/26946:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859
1 lock held by syz-executor.4/26948:
 #0: ffff0000caa4b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open_by_dev+0x180/0x7ec block/bdev.c:859

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