From: Linus Lüssing ll@simonwunderlich.de
[ Upstream commit 097930e85f90f252c44dc0d084598265dd44ca48 ]
It seems that due to a copy & paste error the void pointer in batadv_choose_backbone_gw() is cast to the wrong type.
Fixing this by using "struct batadv_bla_backbone_gw" instead of "struct batadv_bla_claim" which better matches the caller's side.
For now it seems that we were lucky because the two structs both have their orig/vid and addr/vid in the beginning. However I stumbled over this issue when I was trying to add some debug variables in front of "orig" in batadv_backbone_gw, which caused hash lookups to fail.
Fixes: 07568d0369f9 ("batman-adv: don't rely on positions in struct for hashing") Signed-off-by: Linus Lüssing ll@simonwunderlich.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/batman-adv/bridge_loop_avoidance.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index cfb9e16afe38a..e8e86e52d461a 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -83,11 +83,12 @@ static inline u32 batadv_choose_claim(const void *data, u32 size) */ static inline u32 batadv_choose_backbone_gw(const void *data, u32 size) { - const struct batadv_bla_claim *claim = (struct batadv_bla_claim *)data; + const struct batadv_bla_backbone_gw *gw; u32 hash = 0;
- hash = jhash(&claim->addr, sizeof(claim->addr), hash); - hash = jhash(&claim->vid, sizeof(claim->vid), hash); + gw = (struct batadv_bla_backbone_gw *)data; + hash = jhash(&gw->orig, sizeof(gw->orig), hash); + hash = jhash(&gw->vid, sizeof(gw->vid), hash);
return hash % size; }