Patch "ipv6/addrlabel: fix ip6addrlbl_get()" has been added to the 4.3-stable tree

Patch "ipv6/addrlabel: fix ip6addrlbl_get()" has been added to the 4.3-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ipv6/addrlabel: fix ip6addrlbl_get()

to the 4.3-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-addrlabel-fix-ip6addrlbl_get.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Tue Jan 26 21:35:02 PST 2016
From: Andrey Ryabinin <aryabinin@virtuozzo.com>
Date: Mon, 21 Dec 2015 12:54:45 +0300
Subject: ipv6/addrlabel: fix ip6addrlbl_get()

From: Andrey Ryabinin <aryabinin@virtuozzo.com>

[ Upstream commit e459dfeeb64008b2d23bdf600f03b3605dbb8152 ]

ip6addrlbl_get() has never worked. If ip6addrlbl_hold() succeeded,
ip6addrlbl_get() will exit with '-ESRCH'. If ip6addrlbl_hold() failed,
ip6addrlbl_get() will use about to be free ip6addrlbl_entry pointer.

Fix this by inverting ip6addrlbl_hold() check.

Fixes: 2a8cc6c89039 ("[IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/addrlabel.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -552,7 +552,7 @@ static int ip6addrlbl_get(struct sk_buff
 
 	rcu_read_lock();
 	p = __ipv6_addr_label(net, addr, ipv6_addr_type(addr), ifal->ifal_index);
-	if (p && ip6addrlbl_hold(p))
+	if (p && !ip6addrlbl_hold(p))
 		p = NULL;
 	lseq = ip6addrlbl_table.seq;
 	rcu_read_unlock();


Patches currently in stable-queue which might be from aryabinin@virtuozzo.com are

queue-4.3/ipv6-addrlabel-fix-ip6addrlbl_get.patch