tree f397605a50fac1cb444e9f3f7083defbbcfbc18d
parent 63d443efe8be2c1d02b30d7e4edeb9aa085352b3
author Sven Eckelmann <sven@narfation.org> 1462527818 +0200
committer Antonio Quartulli <a@unstable.cc> 1463543379 +0800

batman-adv: Avoid nullptr derefence in batadv_v_neigh_is_sob

batadv_neigh_ifinfo_get can return NULL when it cannot find (even when only
temporarily) anymore the neigh_ifinfo in the list neigh->ifinfo_list. This
has to be checked to avoid kernel Oopses when the ifinfo is dereferenced.

This a situation which isn't expected but is already handled by functions
like batadv_v_neigh_cmp. The same kind of warning is therefore used before
the function returns without dereferencing the pointers.

Fixes: 9786906022eb ("batman-adv: B.A.T.M.A.N. V - implement neighbor comparison API calls")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>