Merge pull request #10874 from gschorcht/gnrc_icmpv6_echo_fix

gnrc_icmpv6_echo: avoid crashing when pktbuf full [backport 2019.01]
RIOT-OS · Jan 26, 2019 · d2e1162 · d2e1162
2 parents b8565e4 + c88838f
commit d2e1162
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/sys/net/gnrc/network_layer/icmpv6/echo/gnrc_icmpv6_echo.c b/sys/net/gnrc/network_layer/icmpv6/echo/gnrc_icmpv6_echo.c
@@ -93,6 +93,12 @@ void gnrc_icmpv6_echo_req_handle(gnrc_netif_t *netif, ipv6_hdr_t *ipv6_hdr,
     pkt = hdr;
     hdr = gnrc_netif_hdr_build(NULL, 0, NULL, 0);
 
+    if (hdr == NULL) {
+        DEBUG("icmpv6_echo: no space left in packet buffer\n");
+        gnrc_pktbuf_release(pkt);
+        return;
+    }
+
     if (netif != NULL) {
         ((gnrc_netif_hdr_t *)hdr->data)->if_pid = netif->pid;
     }