batman-adv: Drop immediate neigh_ifinfo free function
authorSven Eckelmann <sven@narfation.org>
Tue, 5 Jan 2016 11:06:24 +0000 (12:06 +0100)
committerAntonio Quartulli <a@unstable.cc>
Sat, 16 Jan 2016 14:49:38 +0000 (22:49 +0800)
commitae3e1e36e3cb6c686a7a2725af20ca86aa46d62a
treebd1e33d32bb26fe21ef61c6b49ed87001f3b3213
parentf63896928760a7c3ce9c5d3f882ba9f10ae73ad0
batman-adv: Drop immediate neigh_ifinfo 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_ifinfo_free_ref.

Fixes: 89652331c00f ("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