netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr()

ipv6_dev_get_saddr() blindly de-references dst_dev to get the network
namespace, but some callers might pass NULL.  Change callers to pass a
namespace pointer instead.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 8d05527524e3..f5de3f9dc692 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -93,7 +93,8 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
                         if (flags & RT6_LOOKUP_F_SRCPREF_COA)
                                 srcprefs |= IPV6_PREFER_SRC_COA;
 
-                        if (ipv6_dev_get_saddr(ip6_dst_idev(&rt->u.dst)->dev,
+                        if (ipv6_dev_get_saddr(net,
+                                               ip6_dst_idev(&rt->u.dst)->dev,
                                                &flp->fl6_dst, srcprefs,
                                                &saddr))
                                 goto again;