------------[ cut here ]------------
WARNING: kernel/vhost_task.c:97 at __vhost_task_wake+0xbb/0xd0 kernel/vhost_task.c:97, CPU#1: syz.3.2439/14555
Modules linked in:
CPU: 1 UID: 0 PID: 14555 Comm: syz.3.2439 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__vhost_task_wake+0xbb/0xd0 kernel/vhost_task.c:97
Code: 38 00 74 08 48 89 df e8 93 81 95 00 48 8b 3b 5b 41 5e 41 5f e9 a6 45 01 00 e8 31 ef 30 00 90 0f 0b 90 eb 8b e8 26 ef 30 00 90 <0f> 0b 90 5b 41 5e 41 5f e9 18 47 f7 09 cc 0f 1f 80 00 00 00 00 90
RSP: 0018:ffffc9000380fa60 EFLAGS: 00010293
RAX: ffffffff818eed7a RBX: ffff88803169ac00 RCX: ffff888025c48000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000380fb30 R08: ffff88803169ac77 R09: 1ffff110062d358e
R10: dffffc0000000000 R11: ffffed10062d358f R12: 1ffff92000701f54
R13: dffffc0000000000 R14: 0000000000000002 R15: dffffc0000000000
FS: 0000555591dad500(0000) GS:ffff888125ae1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001a9030 CR3: 00000000663b6000 CR4: 00000000003526f0
Call Trace:
<TASK>
vhost_worker_queue+0x194/0x260 drivers/vhost/vhost.c:253
__vhost_worker_flush+0x134/0x1e0 drivers/vhost/vhost.c:290
vhost_worker_flush drivers/vhost/vhost.c:303 [inline]
vhost_dev_flush+0xb2/0x130 drivers/vhost/vhost.c:313
vhost_vsock_flush drivers/vhost/vsock.c:698 [inline]
vhost_vsock_dev_release+0x1fb/0x3f0 drivers/vhost/vsock.c:750
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f20e638eba9
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:00007fff4c40a748 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f20e65d7da0 RCX: 00007f20e638eba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f20e65d7da0 R08: 000000000001135c R09: 000000144c40aa3f
R10: 00007f20e65d7cb0 R11: 0000000000000246 R12: 0000000000103a41
R13: 00007f20e65d6180 R14: ffffffffffffffff R15: 00007fff4c40a860
</TASK>