INFO: task syz-executor.4:11595 blocked for more than 143 seconds.
      Not tainted 6.1.74-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:0     pid:11595 ppid:4274   flags:0x0000000d
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xee4/0x1c98 kernel/sched/core.c:6558
 schedule+0xc4/0x170 kernel/sched/core.c:6634
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693
 __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
 blkdev_put+0xec/0x6e0 block/bdev.c:913
 blkdev_close+0x58/0x94 block/fops.c:514
 __fput+0x30c/0x7bc fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015a04eb0 (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: ffff800015a056b0 (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: ffff800015a04ce0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305
2 locks held by kworker/u4:4/392:
1 lock held by udevd/3843:
2 locks held by getty/3985:
 #0: ffff0000d6229098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001bca02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188
1 lock held by syz-executor.3/4267:
 #0: ffff800015a0a2b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #0: ffff800015a0a2b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e0/0x768 kernel/rcu/tree_exp.h:950
2 locks held by kworker/0:12/8829:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: ffff80002bc57c20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
2 locks held by kworker/0:14/8975:
 #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: ffff80001e0d7c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
1 lock held by udevd/10086:
 #0: ffff0000cedee4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8ec block/bdev.c:815
1 lock held by syz-executor.4/11595:
 #0: ffff0000cedee4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x6e0 block/bdev.c:913
2 locks held by kworker/u4:10/15017:
 #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265
 #1: ffff800021ae7c20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267
1 lock held by syz-executor.4/15437:
 #0: ffff0000cedee4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8ec block/bdev.c:815
1 lock held by syz-executor.1/15617:
 #0: ffff0000d6163148 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable+0x28/0x8c include/linux/mmap_lock.h:126
1 lock held by syz-executor.1/15620:
1 lock held by syz-executor.1/15670:
 #0: ffff0000d6163148 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
 #0: ffff0000d6163148 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_brk mm/mmap.c:181 [inline]
 #0: ffff0000d6163148 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_brk mm/mmap.c:170 [inline]
 #0: ffff0000d6163148 (&mm->mmap_lock){++++}-{3:3}, at: __arm64_sys_brk+0x1bc/0x884 mm/mmap.c:170
1 lock held by syz-executor.1/15674:

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