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authorGao feng <gaofeng@cn.fujitsu.com>2012-09-19 19:25:34 +0000
committerDavid S. Miller <davem@davemloft.net>2012-10-04 16:00:07 -0400
commit6825a26c2dc21eb4f8df9c06d3786ddec97cf53b (patch)
tree8fae2530f09c68511c32d1096cca658585b3655d /net
parent32418cfe495c95013be2e805c087db89dcefac6d (diff)
downloadlinux-6825a26c2dc21eb4f8df9c06d3786ddec97cf53b.tar.bz2
ipv6: release reference of ip6_null_entry's dst entry in __ip6_del_rt
as we hold dst_entry before we call __ip6_del_rt, so we should alse call dst_release not only return -ENOENT when the rt6_info is ip6_null_entry. and we already hold the dst entry, so I think it's safe to call dst_release out of the write-read lock. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/route.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d1ddbc6ddac5..7c7e963260e1 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1593,17 +1593,18 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
struct fib6_table *table;
struct net *net = dev_net(rt->dst.dev);
- if (rt == net->ipv6.ip6_null_entry)
- return -ENOENT;
+ if (rt == net->ipv6.ip6_null_entry) {
+ err = -ENOENT;
+ goto out;
+ }
table = rt->rt6i_table;
write_lock_bh(&table->tb6_lock);
-
err = fib6_del(rt, info);
- dst_release(&rt->dst);
-
write_unlock_bh(&table->tb6_lock);
+out:
+ dst_release(&rt->dst);
return err;
}