This is a note to let you know that I've just added the patch titled
ipv6: release reference of ip6_null_entry's dst entry in __ip6_del_rt
to the 3.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipv6-release-reference-of-ip6_null_entry-s-dst-entry-in-__ip6_del_rt.patch
and it can be found in the queue-3.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 78fd2204e8bd37393c19b9cbe937540a6e558c09 Mon Sep 17 00:00:00 2001
From: Gao feng <[email protected]>
Date: Wed, 19 Sep 2012 19:25:34 +0000
Subject: ipv6: release reference of ip6_null_entry's dst entry in __ip6_del_rt
From: Gao feng <[email protected]>
[ Upstream commit 6825a26c2dc21eb4f8df9c06d3786ddec97cf53b ]
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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/ipv6/route.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1589,17 +1589,18 @@ static int __ip6_del_rt(struct rt6_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;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.6/ipv6-release-reference-of-ip6_null_entry-s-dst-entry-in-__ip6_del_rt.patch
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