INFO: task syz-executor.4:21174 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:0     pid:21174 ppid:4454   flags:0x00000001
Call trace:
 __switch_to+0x210/0x424 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x6a4/0xb34 kernel/sched/core.c:6606
 schedule+0x64/0xa4 kernel/sched/core.c:6682
 rwsem_down_read_slowpath+0x220/0x43c kernel/locking/rwsem.c:1095
 __down_read_common+0x48/0x154 kernel/locking/rwsem.c:1260
 __down_read kernel/locking/rwsem.c:1269 [inline]
 down_read+0x68/0x78 kernel/locking/rwsem.c:1511
 get_super+0xa0/0x144 fs/super.c:795
 fsync_bdev+0x20/0x80 block/bdev.c:216
 blkdev_flushbuf block/ioctl.c:352 [inline]
 blkdev_common_ioctl+0x510/0x16dc block/ioctl.c:478
 blkdev_ioctl+0x208/0x6d4 block/ioctl.c:610
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0xd0/0x148 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: ffff80000d4955c8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x448 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: ffff80000d495c18 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x448 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffff80000d4954a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324
2 locks held by getty/4093:
 #0: ffff0000c7ad3898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f6a62f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x28c/0xbc4 drivers/tty/n_tty.c:2177
4 locks held by kworker/u4:14/7055:
2 locks held by kworker/u4:15/9508:
4 locks held by syz-executor.0/15765:
1 lock held by syz-executor.4/21174:
 #0: ffff0001210e50e0 (&type->s_umount_key#58){++++}-{3:3}, at: get_super+0xa0/0x144 fs/super.c:795
2 locks held by syz-executor.0/24077:
1 lock held by syz-executor.5/24095:

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