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authorDavid S. Miller <davem@davemloft.net>2017-08-21 17:06:42 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-21 17:06:42 -0700
commite2a7c34fb2856fd5306e307e170e3dde358d0dce (patch)
treeafeb300b04186b1a1f649b2cd8a401a75878297c /net/ipv4/route.c
parent7d3f0cd43feea1636dd7746f22fe8249b34d1b79 (diff)
parent6470812e22261d2342ef1597be62e63a0423d691 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 872b4cb136d3..94d4cd2d5ea4 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1267,7 +1267,7 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst)
if (mtu)
return mtu;
- mtu = dst->dev->mtu;
+ mtu = READ_ONCE(dst->dev->mtu);
if (unlikely(dst_metric_locked(dst, RTAX_MTU))) {
if (rt->rt_uses_gateway && mtu > 576)
@@ -2769,14 +2769,21 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE)
table_id = rt->rt_table_id;
- if (rtm->rtm_flags & RTM_F_FIB_MATCH)
+ if (rtm->rtm_flags & RTM_F_FIB_MATCH) {
+ if (!res.fi) {
+ err = fib_props[res.type].error;
+ if (!err)
+ err = -EHOSTUNREACH;
+ goto errout_free;
+ }
err = fib_dump_info(skb, NETLINK_CB(in_skb).portid,
nlh->nlmsg_seq, RTM_NEWROUTE, table_id,
rt->rt_type, res.prefix, res.prefixlen,
fl4.flowi4_tos, res.fi, 0);
- else
+ } else {
err = rt_fill_info(net, dst, src, table_id, &fl4, skb,
NETLINK_CB(in_skb).portid, nlh->nlmsg_seq);
+ }
if (err < 0)
goto errout_free;