[NETNS]: Pass correct namespace in ip_rt_get_source.
ip_rt_get_source is the infamous place for which dst_ifdown kludges
have been implemented. This means that rt->u.dst.dev can be safely
dereferrenced obtain nd_net.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f988ae3..27e0f81 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1559,7 +1559,7 @@
if (rt->fl.iif == 0)
src = rt->rt_src;
- else if (fib_lookup(&init_net, &rt->fl, &res) == 0) {
+ else if (fib_lookup(rt->u.dst.dev->nd_net, &rt->fl, &res) == 0) {
src = FIB_RES_PREFSRC(res);
fib_res_put(&res);
} else