'send_pkt()' returns 0, but 28244 expected
WARNING: CPU: 0 PID: 488 at net/vmw_vsock/virtio_transport_common.c:446 virtio_transport_send_pkt_info+0xe81/0x10c0 net/vmw_vsock/virtio_transport_common.c:444
Modules linked in:
CPU: 0 UID: 0 PID: 488 Comm: syz.2.17 Not tainted syzkaller #0 2c81b9d78d8590c688b6a8ddc7a552a5b63633ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:virtio_transport_send_pkt_info+0xe81/0x10c0 net/vmw_vsock/virtio_transport_common.c:444
Code: fe 08 fc 0f 0b bb f2 ff ff ff eb b5 e8 28 fe 08 fc c6 05 3a bf 46 02 01 48 c7 c7 a0 84 79 86 44 89 f6 4c 89 e2 e8 1f 5a 87 fb <0f> 0b e9 de fe ff ff e8 03 fe 08 fc 0f 0b e9 c6 f6 ff ff 89 d9 80
RSP: 0018:ffffc9000080f550 EFLAGS: 00010246
RAX: 42420c7ebae6c500 RBX: ffffffff87c11cb0 RCX: ffff88811cc1a600
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000080f630 R08: ffffc9000080f227 R09: 1ffff92000101e44
R10: dffffc0000000000 R11: fffff52000101e45 R12: 0000000000006e54
R13: 0000000000008d60 R14: 0000000000000000 R15: ffffc9000080f680
FS:  00007fa874e616c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000003f000 CR3: 000000011d4ac000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 virtio_transport_stream_enqueue net/vmw_vsock/virtio_transport_common.c:1129 [inline]
 virtio_transport_seqpacket_enqueue+0x141/0x1c0 net/vmw_vsock/virtio_transport_common.c:857
 vsock_connectible_sendmsg+0xb1a/0x10c0 net/vmw_vsock/af_vsock.c:2056
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0xa18/0xa70 net/socket.c:2610
 ___sys_sendmsg+0x220/0x2a0 net/socket.c:2664
 __sys_sendmmsg+0x271/0x470 net/socket.c:2750
 __do_sys_sendmmsg net/socket.c:2779 [inline]
 __se_sys_sendmmsg net/socket.c:2776 [inline]
 __x64_sys_sendmmsg+0xa4/0xc0 net/socket.c:2776
 x64_sys_call+0xfec/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:308
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa873f8ebe9
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:00007fa874e61038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa8741b5fa0 RCX: 00007fa873f8ebe9
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007fa874011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8741b6038 R14: 00007fa8741b5fa0 R15: 00007ffc8fc41658
 </TASK>
---[ end trace 0000000000000000 ]---