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net: ipv6: Fix crash from fragmented packets

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Echo server crashes upon reception of fragmented packets. This
occurs when fragmentation is enabled with the default prj.conf
of echo server. The cause is that by default with logs disabled
net_sprint_ipv6_addr returns NULL.

Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
This commit is contained in:
Ruslan Mstoi 2018-08-15 16:47:20 +03:00 committed by Jukka Rissanen
parent 331659c76b
commit afa0e0026f
1 changed files with 3 additions and 1 deletions
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4
subsys/net/ip/ipv6.c
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@ -3268,10 +3268,12 @@ static bool reassembly_cancel(u32_t id,
static void reassembly_info(char *str, struct net_ipv6_reassembly *reass)
{
char out[NET_IPV6_ADDR_LEN];
int i, len;
#if NET_LOG_ENABLED > 0
char out[NET_IPV6_ADDR_LEN];
snprintk(out, sizeof(out), "%s", net_sprint_ipv6_addr(&reass->dst));
#endif
for (i = 0, len = 0; i < NET_IPV6_FRAGMENTS_MAX_PKT; i++) {
if (!reass->pkt[i]) {