From 214f45c91bbda8321d9676f1197238e4663edcbb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 18 Feb 2011 11:39:01 -0800 Subject: [PATCH] net: provide default_advmss() methods to blackhole dst_ops Commit 0dbaee3b37e118a (net: Abstract default ADVMSS behind an accessor.) introduced a possible crash in tcp_connect_init(), when dst->default_advmss() is called from dst_metric_advmss() Reported-by: George Spelvin Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/route.c | 1 + net/ipv6/route.c | 1 + 2 files changed, 2 insertions(+) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 788a3e74834e..6ed6603c2f6d 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2722,6 +2722,7 @@ static struct dst_ops ipv4_dst_blackhole_ops = { .destroy = ipv4_dst_destroy, .check = ipv4_blackhole_dst_check, .default_mtu = ipv4_blackhole_default_mtu, + .default_advmss = ipv4_default_advmss, .update_pmtu = ipv4_rt_blackhole_update_pmtu, }; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 1c29f95695de..a998db6e7895 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -128,6 +128,7 @@ static struct dst_ops ip6_dst_blackhole_ops = { .destroy = ip6_dst_destroy, .check = ip6_dst_check, .default_mtu = ip6_blackhole_default_mtu, + .default_advmss = ip6_default_advmss, .update_pmtu = ip6_rt_blackhole_update_pmtu, };