From: David Ahern <dsahern@xxxxxxxxxx>
[ Upstream commit e30a845b0376eb51c9c94f56bbd53b2e08ba822f ]
ip6_route_multipath_del loop continues processing the multipath
attribute even if delete of a nexthop path fails. For consistency,
do the same if the gateway attribute is invalid.
Fixes: 1ff15a710a86 ("ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route")
Signed-off-by: David Ahern <dsahern@xxxxxxxxxx>
Acked-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220103171911.94739-1-dsahern@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/ipv6/route.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 53861f9c8ce0a..56f0783df5896 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -5313,8 +5313,10 @@ static int ip6_route_multipath_del(struct fib6_config *cfg,
if (nla) {
err = fib6_gw_from_attr(&r_cfg.fc_gateway, nla,
extack);
- if (err)
- return err;
+ if (err) {
+ last_err = err;
+ goto next_rtnh;
+ }
r_cfg.fc_flags |= RTF_GATEWAY;
}
@@ -5323,6 +5325,7 @@ static int ip6_route_multipath_del(struct fib6_config *cfg,
if (err)
last_err = err;
+next_rtnh:
rtnh = rtnh_next(rtnh, &remaining);
}
--
2.34.1
