INFO: task syz-executor.0:10282 blocked for more than 430 seconds.
      Not tainted 5.16.0-rc1-syzkaller-00003-g8ab774587903 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid:10282 ppid:  2187 flags:0x00000009
Call trace:
 __switch_to+0x274/0x3b4 arch/arm64/kernel/process.c:526
 context_switch kernel/sched/core.c:4972 [inline]
 __schedule+0x818/0x1be0 kernel/sched/core.c:6253
 schedule+0xb8/0x224 kernel/sched/core.c:6326
 blk_mq_freeze_queue_wait+0xf4/0x130 block/blk-mq.c:178
 del_gendisk+0x418/0x680 block/genhd.c:623
 loop_remove+0x38/0xf0 drivers/block/loop.c:2080
 loop_control_remove drivers/block/loop.c:2137 [inline]
 loop_control_ioctl+0x338/0x3bc drivers/block/loop.c:2175
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x120/0x18c fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x6c/0x260 arch/arm64/kernel/syscall.c:52
 el0_svc_common.constprop.0+0xc4/0x254 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0xa0/0xcc arch/arm64/kernel/syscall.c:181
 el0_svc+0x64/0x290 arch/arm64/kernel/entry-common.c:603
 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:621
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:572

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffff800015ef8f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x74/0x25c kernel/locking/lockdep.c:6460
2 locks held by klogd/1981:
2 locks held by getty/2143:
 #0: ffff00001438d098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001894b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x810/0xbe0 drivers/tty/n_tty.c:2113
3 locks held by kworker/0:0/7786:

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