INFO: task syz-executor.3:1977 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:0     pid:1977  tgid:1966  ppid:6118   flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1354/0x2360 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xb8/0x19c kernel/sched/core.c:6778
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835
 __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
 blkdev_put+0xec/0x740 block/bdev.c:930
 bdev_release+0x5c/0x78 block/bdev.c:954
 blkdev_release+0x40/0x54 block/fops.c:616
 __fput+0x308/0x8e4 fs/file_table.c:394
 ____fput+0x20/0x30 fs/file_table.c:422
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 get_signal+0x13f4/0x15ec kernel/signal.c:2680
 do_signal arch/arm64/kernel/signal.c:1249 [inline]
 do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Showing all locks held in the system:
3 locks held by kworker/1:1/25:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff800094007c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff0000cd9ef240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489
1 lock held by khungtaskd/29:
 #0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300
2 locks held by getty/5861:
 #0: ffff0000d6d290a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800094e502f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
2 locks held by kworker/u4:13/16673:
3 locks held by kworker/u4:19/16686:
 #0: ffff0000c18a4138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
 #1: ffff8000a6077c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
 #2: ffff800090f64350 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf4/0x8d0 net/core/net_namespace.c:576
1 lock held by udevd/31274:
 #0: ffff0000c9fd34c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788
1 lock held by syz-executor.3/1977:
 #0: ffff0000c9fd34c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:930
1 lock held by udevd/2343:
 #0: ffff0000c9eba4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788
1 lock held by syz-executor.1/3998:
 #0: ffff0000c9eba4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:930
1 lock held by syz-executor.1/4898:
 #0: ffff0000c9eba4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788
1 lock held by syz-executor.1/5199:
 #0: ffff0000c9eba4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788
1 lock held by syz-executor.1/5456:
 #0: ffff0000c9eba4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788

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