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-rw-r--r--sunrpc/svc_udp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sunrpc/svc_udp.c b/sunrpc/svc_udp.c
index 608b286d84..f912260ef5 100644
--- a/sunrpc/svc_udp.c
+++ b/sunrpc/svc_udp.c
@@ -245,8 +245,8 @@ again:
       mesgp->msg_namelen = len;
       mesgp->msg_control = &xprt->xp_pad [sizeof (struct iovec)
 					  + sizeof (struct msghdr)];
-      mesgp->msg_controllen = sizeof(struct cmsghdr)
-			      + sizeof (struct in_pktinfo);
+      mesgp->msg_controllen = sizeof(xprt->xp_pad)
+			      - sizeof (struct iovec) - sizeof (struct msghdr);
       rlen = recvmsg (xprt->xp_sock, mesgp, 0);
       if (rlen >= 0)
 	len = mesgp->msg_namelen;