tree 254fdeb46565e5e8e7f56782f60cfc713ebdffcc
parent 10c78f5854d361ded4736c1831948e0a5f67b932
author Sven Eckelmann <sven@narfation.org> 1467445934 +0200
committer Simon Wunderlich <sw@simonwunderlich.de> 1467715201 +0200

batman-adv: Avoid nullptr dereference in dat after vlan_insert_tag

vlan_insert_tag can return NULL on errors. The distributed arp table code
therefore has to check the return value of vlan_insert_tag for NULL before
it can safely operate on this pointer.

Fixes: be1db4f6615b ("batman-adv: make the Distributed ARP Table vlan aware")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>