From cdbb8064bd6fad7e6e7306a6cff36ec029271834 Mon Sep 17 00:00:00 2001
From: Asutorufa <16442314+Asutorufa@users.noreply.github.com>
Date: Tue, 1 Jul 2025 22:11:13 +0800
Subject: [PATCH] unix: The error should not be overridden by anyToSockaddr
 otherwise, the length of the data will return as -1

Signed-off-by: Asutorufa <16442314+Asutorufa@users.noreply.github.com>
---
 unix/syscall_unix.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/unix/syscall_unix.go b/unix/syscall_unix.go
index 4e92e5aa40..af778fa665 100644
--- a/unix/syscall_unix.go
+++ b/unix/syscall_unix.go
@@ -369,7 +369,7 @@ func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from
 	var rsa RawSockaddrAny
 	n, oobn, recvflags, err = recvmsgRaw(fd, iov[:], oob, flags, &rsa)
 	// source address is only specified if the socket is unconnected
-	if rsa.Addr.Family != AF_UNSPEC {
+	if err == nil && rsa.Addr.Family != AF_UNSPEC {
 		from, err = anyToSockaddr(fd, &rsa)
 	}
 	return