From: Bobby Eshleman <bobby.eshleman@bytedance.com>

This removes behaviour, where error code returned from any
transport was always switched to ENOMEM.

Signed-off-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
---
 net/vmw_vsock/af_vsock.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 884eca7f6743..61ddab664c33 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1862,8 +1862,9 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
 			written = transport->stream_enqueue(vsk,
 					msg, len - total_written);
 		}
+
 		if (written < 0) {
-			err = -ENOMEM;
+			err = written;
 			goto out_err;
 		}
 
-- 
2.25.1

On Sun, Dec 04, 2022 at 07:19:20PM +0000, Arseniy Krasnov wrote:
>From: Bobby Eshleman <bobby.eshleman@bytedance.com>
>
>This removes behaviour, where error code returned from any
>transport was always switched to ENOMEM.

I would add here the example you described in the cover letter with 
EMSGSIZE, so the problem is better explained.

>
>Signed-off-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
>---
> net/vmw_vsock/af_vsock.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
>diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
>index 884eca7f6743..61ddab664c33 100644
>--- a/net/vmw_vsock/af_vsock.c
>+++ b/net/vmw_vsock/af_vsock.c
>@@ -1862,8 +1862,9 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
> 			written = transport->stream_enqueue(vsk,
> 					msg, len - total_written);
> 		}
>+
> 		if (written < 0) {
>-			err = -ENOMEM;
>+			err = written;
> 			goto out_err;
> 		}
>
>-- 
>2.25.1