Yonezawa-T2 5cb904b57e gnrc_sixlowpan_nd: fixed crash on gnrc_sixlowpan_nd_next_hop_l2addr. ... When `gnrc_ndp_node_next_hop_l2addr` cannot resolve L2 address, it creates a temporary neighbor cache entry with interface `KERNEL_PID_UNDEF` (unless the interface is already known) to send a neighbor solicitation. When another packet directed to the same address is going to sent before receiving a neighbor advertisement, `gnrc_sixlowpan_nd_next_hop_l2addr` gets the temporary neighbor cache entry and calls `gnrc_ipv6_netif_get` with `KERNEL_PID_UNDEF`, resulting get a `NULL`. We must check `NULL` before dereference it. FYI, both `gnrc_ndp_node_next_hop_l2addr` and `gnrc_sixlowpan_nd_next_hop_l2addr` are enabled when `gnrc_sixlowpan_border_router_default` module is enabled with `GNRC_NETIF_NUMOF` is greater than 1: gnrc_sixlowpan_border_router_default → gnrc_ipv6_router_default → gnrc_ndp_router (if GNRC_NETIF_NUMOF > 1) → gnrc_ndp_node → gnrc_ndp_node_next_hop_l2addr is called from _next_hop_l2addr gnrc_sixlowpan_border_router_default → gnrc_sixlowpan_nd_border_router → gnrc_sixlowpan_nd_router → gnrc_sixlowpan_nd → gnrc_sixlowpan_nd_next_hop_l2addr is called from _next_hop_l2addr		2016-01-07 10:02:49 +09:00
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ctx	ipv6: ndp: sixlowpan: remove vtimer includes	2015-11-02 15:02:08 +01:00
frag	gnrc_sixlowpan: Fix IPHC/NHC packet order problem	2015-12-22 17:14:33 +01:00
iphc	sixlowpan: iphc: fix dependencies for udp and nhc	2015-12-23 13:57:55 +01:00
nd	gnrc_sixlowpan_nd: fixed crash on gnrc_sixlowpan_nd_next_hop_l2addr.	2016-01-07 10:02:49 +09:00
netif	gnrc: make all gnrc modules sub-modules of gnrc	2015-08-18 23:00:07 +02:00
gnrc_sixlowpan.c	sixlowpan: iphc: remove dispatch and assign result to pkt	2015-12-22 20:54:39 +01:00
Makefile	gnrc: make all gnrc modules sub-modules of gnrc	2015-08-18 23:00:07 +02:00