batman-adv: Avoid nullptr dereference in dat after vlan_insert_tag

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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: be1db4f661 ("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>

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Sven Eckelmann 2016-07-02 09:52:14 +02:00 • committed by Simon Wunderlich

parent 10c78f5854

commit 60154a1e04

1 changed files with 8 additions and 2 deletions

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net/batman-adv/distributed-arp-table.c

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