The references to the network device should be dropped inside the release function for batadv_hard_iface similar to what is done with the batman-adv internal datastructures.
Fixes: b25cb3ddcccd ("batman-adv: use rcu callbacks when freeing batman_if") Signed-off-by: Sven Eckelmann sven@narfation.org --- v2: - split patchset into fixes and kref migration to make it easier when the decision is made where each patch will be applied
net/batman-adv/hard-interface.c | 13 ++++++++----- net/batman-adv/hard-interface.h | 4 ++-- 2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 49e05d2..aea4d06 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -47,13 +47,16 @@ #include "sysfs.h" #include "translation-table.h"
-void batadv_hardif_free_rcu(struct rcu_head *rcu) +/** + * batadv_hardif_release - release hard interface from lists and queue for + * free after rcu grace period + * @hard_iface: the hard interface to free + */ +void batadv_hardif_release(struct batadv_hard_iface *hard_iface) { - struct batadv_hard_iface *hard_iface; - - hard_iface = container_of(rcu, struct batadv_hard_iface, rcu); dev_put(hard_iface->net_dev); - kfree(hard_iface); + + kfree_rcu(hard_iface, rcu); }
struct batadv_hard_iface * diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 7b12ea8..6bcc536 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -61,7 +61,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, void batadv_hardif_remove_interfaces(void); int batadv_hardif_min_mtu(struct net_device *soft_iface); void batadv_update_min_mtu(struct net_device *soft_iface); -void batadv_hardif_free_rcu(struct rcu_head *rcu); +void batadv_hardif_release(struct batadv_hard_iface *hard_iface);
/** * batadv_hardif_free_ref - decrement the hard interface refcounter and @@ -72,7 +72,7 @@ static inline void batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) { if (atomic_dec_and_test(&hard_iface->refcount)) - call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); + batadv_hardif_release(hard_iface); }
static inline struct batadv_hard_iface *