------------[ cut here ]------------
WARNING: kernel/vhost_task.c:97 at __vhost_task_wake+0xbb/0xd0, CPU#1: syz.2.6439/4276
Modules linked in:
CPU: 1 UID: 0 PID: 4276 Comm: syz.2.6439 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__vhost_task_wake+0xbb/0xd0
Code: 38 00 74 08 48 89 df e8 03 8b 95 00 48 8b 3b 5b 41 5e 41 5f e9 a6 45 01 00 e8 81 f0 30 00 90 0f 0b 90 eb 8b e8 76 f0 30 00 90 <0f> 0b 90 5b 41 5e 41 5f e9 18 17 f8 09 cc 0f 1f 80 00 00 00 00 90
RSP: 0018:ffffc90008707a20 EFLAGS: 00010293
RAX: ffffffff818eed7a RBX: ffff88811d2e7400 RCX: ffff888020081d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90008707af0 R08: ffff88811d2e7477 R09: 1ffff11023a5ce8e
R10: dffffc0000000000 R11: ffffed1023a5ce8f R12: 1ffff920010e0f4c
R13: dffffc0000000000 R14: 0000000000000002 R15: dffffc0000000000
FS:  00007f6883df16c0(0000) GS:ffff8881a39dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028c24000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 vhost_worker_queue+0x194/0x260
 __vhost_worker_flush+0x134/0x1e0
 vhost_dev_stop+0x282/0x320
 vhost_vsock_dev_release+0x203/0x3f0
 __fput+0x44c/0xa70
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6882f8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6883df1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f68831d5fa0 RCX: 00007f6882f8eba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f6883011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f68831d6038 R14: 00007f68831d5fa0 R15: 00007ffeda15ad68
 </TASK>
