INFO: task syz.0.687:5109 blocked for more than 430 seconds.
      Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.687       state:D stack:0     pid:5109  tgid:5109  ppid:3275   flags:0x0000000d
Call trace:
 __switch_to+0x204/0x39c arch/arm64/kernel/process.c:603
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0xaf4/0x2dfc kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xd0/0x304 kernel/sched/core.c:6767
 schedule_timeout+0x1fc/0x234 kernel/time/timer.c:2591
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x1d0/0x4ac kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x20/0x2c kernel/sched/completion.c:148
 __vhost_worker_flush+0x164/0x188 drivers/vhost/vhost.c:288
 vhost_worker_flush drivers/vhost/vhost.c:295 [inline]
 vhost_dev_flush+0xac/0x110 drivers/vhost/vhost.c:305
 vhost_net_flush+0x20/0x198 drivers/vhost/net.c:1359
 vhost_net_release+0xa4/0x218 drivers/vhost/net.c:1380
 __fput+0x2c4/0x944 fs/file_table.c:431
 ____fput+0x14/0x20 fs/file_table.c:459
 task_work_run+0x128/0x210 kernel/task_work.c:228
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x1d4/0x25c arch/arm64/kernel/entry-common.c:151
 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+0x100/0x180 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x100/0x12c 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/31:
 #0: ffff800086de5320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x44/0x2d4 kernel/locking/lockdep.c:6695
2 locks held by kworker/u8:2/35:
2 locks held by getty/3216:
 #0: ffff000012de30a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80008ce8b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211
3 locks held by sshd/3267:
2 locks held by syz-executor/3269:
2 locks held by kworker/0:3/6696:
 #0: ffff000069fa9fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:593 [inline]
 #0: ffff000069fa9fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
 #0: ffff000069fa9fd8 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1804 [inline]
 #0: ffff000069fa9fd8 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x270/0x2dfc kernel/sched/core.c:6575
 #1: fffffdffbf7781c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3d0/0x748 kernel/sched/psi.c:939
2 locks held by syz.0.1363/7031:
 #0: ffff000018da8420 (sb_writers#17){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
 #0: ffff000018da8420 (sb_writers#17){.+.+}-{0:0}, at: sb_start_write include/linux/fs.h:1852 [inline]
 #0: ffff000018da8420 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x3c/0xb0 fs/namespace.c:515
 #1: ffff00001af0ee08 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
 #1: ffff00001af0ee08 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0xf8/0x28c fs/xattr.c:320

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