rx: Handle negative returns on packet reads

[openafs.git] / src / rx / rx_packet.c

diff --git a/src/rx/rx_packet.c b/src/rx/rx_packet.c
index 0f0513d..78d2e5e 100644 (file)
--- a/src/rx/rx_packet.c
+++ b/src/rx/rx_packet.c
@@ -1407,7 +1407,7 @@ rxi_ReadPacket(osi_socket socket, struct rx_packet *p, afs_uint32 * host,
               u_short * port)
 {
     struct sockaddr_in from;
-    unsigned int nbytes;
+    int nbytes;
     afs_int32 rlen;
     afs_uint32 tlen, savelen;
     struct msghdr msg;
@@ -1446,7 +1446,7 @@ rxi_ReadPacket(osi_socket socket, struct rx_packet *p, afs_uint32 * host,
     p->wirevec[p->niovecs - 1].iov_len = savelen;
 
     p->length = (u_short)(nbytes - RX_HEADER_SIZE);
-    if ((nbytes > tlen) || (p->length & 0x8000)) {     /* Bogus packet */
+    if (nbytes < 0 || (nbytes > tlen) || (p->length & 0x8000)) { /* Bogus packet */
        if (nbytes < 0 && errno == EWOULDBLOCK) {
             if (rx_stats_active)
                 rx_atomic_inc(&rx_stats.noPacketOnRead);