From 0251d6585ed1bb4419d087fe416c260c3386c113 Mon Sep 17 00:00:00 2001
From: "Martine S. Lenders" <m.lenders@fu-berlin.de>
Date: Fri, 29 Nov 2019 18:00:54 +0100
Subject: [PATCH] gnrc_sixlowpan_frag_rb: error when interval buffer is full

---
 .../sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c              | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/net/gnrc/network_layer/sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c b/sys/net/gnrc/network_layer/sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c
index 7a08aee543..a0f782ef28 100644
--- a/sys/net/gnrc/network_layer/sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c
+++ b/sys/net/gnrc/network_layer/sixlowpan/frag/rb/gnrc_sixlowpan_frag_rb.c
@@ -307,6 +307,12 @@ static int _rbuf_add(gnrc_netif_hdr_t *netif_hdr, gnrc_pktsnip_t *pkt,
         memcpy(((uint8_t *)entry->pkt->data) + offset, data,
                frag_size);
     }
+    else {
+        /* no space left in rbuf interval buffer*/
+        gnrc_pktbuf_release(entry->pkt);
+        gnrc_sixlowpan_frag_rb_remove(entry);
+        res = RBUF_ADD_ERROR;
+    }
     /* no errors and not consumed => release packet */
     gnrc_pktbuf_release(pkt);
     return res;