]> git.baikalelectronics.ru Git - kernel.git/commit
batman-adv: Drop immediate batadv_neigh_node free function
authorSven Eckelmann <sven@narfation.org>
Tue, 5 Jan 2016 11:06:22 +0000 (12:06 +0100)
committerAntonio Quartulli <a@unstable.cc>
Sat, 16 Jan 2016 14:49:16 +0000 (22:49 +0800)
commita138e751230d3e406d91871ed0d25ab683c7e0d1
treed8d611972e6fc8aabfde0a5b6e32babd2c623dcb
parent7ec5c428a866eb75f80c8144d4b65a4fea65d388
batman-adv: Drop immediate batadv_neigh_node free function

It is not allowed to free the memory of an object which is part of a list
which is protected by rcu-read-side-critical sections without making sure
that no other context is accessing the object anymore. This usually happens
by removing the references to this object and then waiting until the rcu
grace period is over and no one (allowedly) accesses it anymore.

But the _now functions ignore this completely. They free the object
directly even when a different context still tries to access it. This has
to be avoided and thus these functions must be removed and all functions
have to use batadv_neigh_node_free_ref.

Fixes: bc4faacdc5cc ("batman-adv: split tq information in neigh_node struct")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
net/batman-adv/originator.c