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Date: Mon, 1 Jun 2020 19:52:54 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, ASSOGBA Emery <assogba.emery@...il.com>, David Ahern <dsahern@...il.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 5.4 016/142] nexthop: Fix attribute checking for groups From: David Ahern <dsahern@...il.com> [ Upstream commit 84be69b869a5a496a6cfde9b3c29509207a1f1fa ] For nexthop groups, attributes after NHA_GROUP_TYPE are invalid, but nh_check_attr_group starts checking at NHA_GROUP. The group type defaults to multipath and the NHA_GROUP_TYPE is currently optional so this has slipped through so far. Fix the attribute checking to handle support of new group types. Fixes: 430a049190de ("nexthop: Add support for nexthop groups") Signed-off-by: ASSOGBA Emery <assogba.emery@...il.com> Signed-off-by: David Ahern <dsahern@...il.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- net/ipv4/nexthop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -435,7 +435,7 @@ static int nh_check_attr_group(struct ne if (!valid_group_nh(nh, len, extack)) return -EINVAL; } - for (i = NHA_GROUP + 1; i < __NHA_MAX; ++i) { + for (i = NHA_GROUP_TYPE + 1; i < __NHA_MAX; ++i) { if (!tb[i]) continue;
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