From ee873ed8e9bc6e7c7911c50e3a7f011d9b5c8149 Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Fri, 21 Jun 2019 17:45:25 +0200 Subject: [PATCH] ipv6/route: Don't match on fc_nh_id if not set in ip6_route_del() If fc_nh_id isn't set, we shouldn't try to match against it. This actually matters just for the RTF_CACHE below (where this case is already handled): if iproute2 gets a route exception and tries to delete it, it won't reference it by fc_nh_id, even if a nexthop object might be associated to the originating route. Fixes: 911eec9318ed ("ipv6: Allow routes to use nexthop objects") Signed-off-by: Stefano Brivio Reviewed-by: David Ahern Signed-off-by: David S. Miller --- net/ipv6/route.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 3975ae8e2440b..0a7c21ac0b95f 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3840,7 +3840,8 @@ static int ip6_route_del(struct fib6_config *cfg, for_each_fib6_node_rt_rcu(fn) { struct fib6_nh *nh; - if (rt->nh && rt->nh->id != cfg->fc_nh_id) + if (rt->nh && cfg->fc_nh_id && + rt->nh->id != cfg->fc_nh_id) continue; if (cfg->fc_flags & RTF_CACHE) { -- 2.39.5