------------[ cut here ]------------
'send_pkt()' returns 0, but 65536 expected
WARNING: CPU: 1 PID: 14396 at net/vmw_vsock/virtio_transport_common.c:428 virtio_transport_send_pkt_info+0xeb6/0x1100 net/vmw_vsock/virtio_transport_common.c:426
Modules linked in:
CPU: 1 UID: 0 PID: 14396 Comm: syz.0.2369 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:virtio_transport_send_pkt_info+0xeb6/0x1100 net/vmw_vsock/virtio_transport_common.c:426
Code: 0f 0b 90 b8 f2 ff ff ff eb be e8 15 0c e8 f6 c6 05 e8 18 31 04 01 90 48 c7 c7 40 15 29 8c 44 89 fe 4c 89 f2 e8 8b de ac f6 90 <0f> 0b 90 90 e9 b9 fe ff ff e8 ec 0b e8 f6 90 0f 0b 90 e9 bc f6 ff
RSP: 0018:ffffc90003e8f540 EFLAGS: 00010246
RAX: e3cbca5dc73d3800 RBX: ffffc90003e8f670 RCX: 0000000000080000
RDX: ffffc90005721000 RSI: 00000000000080ef RDI: 00000000000080f0
RBP: ffffffff8f016ef0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124863 R12: ffffc90003e8f660
R13: 0000000000010000 R14: 0000000000010000 R15: 0000000000000000
FS:  00007fe30ea066c0(0000) GS:ffff8881269c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000003f000 CR3: 000000002320e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 virtio_transport_stream_enqueue net/vmw_vsock/virtio_transport_common.c:1111 [inline]
 virtio_transport_seqpacket_enqueue+0x166/0x1f0 net/vmw_vsock/virtio_transport_common.c:839
 vsock_connectible_sendmsg+0xac7/0x1050 net/vmw_vsock/af_vsock.c:2141
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x219/0x270 net/socket.c:729
 ____sys_sendmsg+0x534/0x820 net/socket.c:2614
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668
 __sys_sendmmsg+0x22d/0x430 net/socket.c:2757
 __do_sys_sendmmsg net/socket.c:2784 [inline]
 __se_sys_sendmmsg net/socket.c:2781 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2781
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe31079ebe9
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:00007fe30ea06038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fe3109c5fa0 RCX: 00007fe31079ebe9
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000006
RBP: 00007fe310821e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe3109c6038 R14: 00007fe3109c5fa0 R15: 00007ffde9288e88
 </TASK>