------------[ cut here ]------------ WARNING: kernel/vhost_task.c:97 at __vhost_task_wake+0xbb/0xd0 kernel/vhost_task.c:97, CPU#0: syz.0.174/6507 Modules linked in: CPU: 0 UID: 0 PID: 6507 Comm: syz.0.174 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 c7 ff 09 cc 0f 1f 80 00 00 00 00 90 RSP: 0018:ffffc90003b7f680 EFLAGS: 00010293 RAX: ffffffff818f2d7a RBX: ffff888033c7c400 RCX: ffff88802bc85ac0 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90003b7f750 R08: ffff888033c7c477 R09: 1ffff1100678f88e R10: dffffc0000000000 R11: ffffed100678f88f R12: 1ffff9200076fed8 R13: dffffc0000000000 R14: 0000000000000002 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88812579c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9942aa0f98 CR3: 0000000027bfc000 CR4: 00000000003526f0 Call Trace: 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 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:966 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 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: 0033:0x7f9941b8eba9 Code: Unable to access opcode bytes at 0x7f9941b8eb7f. RSP: 002b:00007f9942aa10e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f9941dd5fa8 RCX: 00007f9941b8eba9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9941dd5fa8 RBP: 00007f9941dd5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9941dd6038 R14: 00007ffd2989c130 R15: 00007ffd2989c218