INFO: task syz-executor.0:6320 blocked for more than 143 seconds. Not tainted 6.9.0-next-20240523-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:24672 pid:6320 tgid:6320 ppid:5115 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __vhost_worker_flush+0x1e6/0x280 drivers/vhost/vhost.c:288 vhost_worker_flush drivers/vhost/vhost.c:295 [inline] vhost_dev_flush+0xc9/0x150 drivers/vhost/vhost.c:305 vhost_vsock_flush drivers/vhost/vsock.c:694 [inline] vhost_vsock_dev_release+0x225/0x410 drivers/vhost/vsock.c:746 __fput+0x406/0x8b0 fs/file_table.c:422 __do_sys_close fs/open.c:1555 [inline] __se_sys_close fs/open.c:1540 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1540 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7d50e7bdda RSP: 002b:00007ffcac6dd7d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f7d50e7bdda RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f7d50fad980 R08: 0000001b33420000 R09: 0000000000000161 R10: 00000000819d8c9c R11: 0000000000000293 R12: 0000000000029ffc R13: 00007f7d50fabf8c R14: 00007ffcac6dd8d0 R15: 0000000000000032 Showing all locks held in the system: 3 locks held by kworker/u8:0/11: 1 lock held by khungtaskd/30: #0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 2 locks held by kworker/u8:2/35: #0: ffff8880182f4948 ((wq_