From: Sven Eckelmann Date: Mon, 19 Feb 2018 13:08:53 +0000 (+0100) Subject: batman-adv: Ignore invalid batadv_v_gw during netlink send X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f08cabec0696517f8c811cd8279df5f56d0ab15d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git batman-adv: Ignore invalid batadv_v_gw during netlink send [ Upstream commit 011c935fceae5252619ef730baa610c655281dda ] The function batadv_v_gw_dump stops the processing loop when batadv_v_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries. At worst, not a single entry is returned to userspace even when plenty of possible gateways exist. Fixes: b71bb6f924fe ("batman-adv: add B.A.T.M.A.N. V bat_gw_dump implementations") Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 4e2724c5b33d..a8f4c3902cf5 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -930,7 +930,7 @@ static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, struct batadv_neigh_ifinfo *router_ifinfo = NULL; struct batadv_neigh_node *router; struct batadv_gw_node *curr_gw; - int ret = -EINVAL; + int ret = 0; void *hdr; router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);