receive_bat_packet is not called with rcu_read_lock so we must ensure by ourself that we protect list_for_each_entry_rcu using the correct RCU locks.
Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- drivers/staging/batman-adv/routing.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c index 2cf8cf9..58aa99e 100644 --- a/drivers/staging/batman-adv/routing.c +++ b/drivers/staging/batman-adv/routing.c @@ -563,6 +563,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, batman_packet->tq, batman_packet->ttl, batman_packet->version, has_directlink_flag);
+ rcu_read_lock(); list_for_each_entry_rcu(batman_if, &if_list, list) { if (batman_if->if_status != IF_ACTIVE) continue; @@ -585,6 +586,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, if (compare_orig(ethhdr->h_source, broadcast_addr)) is_broadcast = 1; } + rcu_read_unlock();
if (batman_packet->version != COMPAT_VERSION) { bat_dbg(DBG_BATMAN, bat_priv,