batman-adv: Make bat_priv->curr_gw an rcu protected pointer
authorLinus Lüssing <linus.luessing@ascom.ch>
Sun, 13 Feb 2011 21:13:02 +0000 (21:13 +0000)
committerMarek Lindner <lindner_marek@yahoo.de>
Sat, 5 Mar 2011 11:50:10 +0000 (12:50 +0100)
commit5d02b3cdfafeb23ab7cf43ef1d2118007370e8d0
tree4bd28fe2a1bca0a14710f01f98852f43ef2e330c
parentf3e0008f01b275bd08bd416cfcaa7021dd6bc277
batman-adv: Make bat_priv->curr_gw an rcu protected pointer

The rcu protected macros rcu_dereference() and rcu_assign_pointer()
for the bat_priv->curr_gw need to be used, as well as spin/rcu locking.

Otherwise we might end up using a curr_gw pointer pointing to already
freed memory.

Reported-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
net/batman-adv/gateway_client.c
net/batman-adv/types.h