Patch "ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put" has been added to the 3.0-stable tree

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

    ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put

to the 3.0-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-mcast-use-in6_dev_put-in-timer-handlers-instead-of-__in6_dev_put.patch
and it can be found in the queue-3.0 subdirectory.

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


>From 9eb88baaea39257fbefe05ecdbba3b69fc92f12c Mon Sep 17 00:00:00 2001
From: Salam Noureddine <noureddine@xxxxxxxxxxxxxxxxxx>
Date: Sun, 29 Sep 2013 13:41:34 -0700
Subject: ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put

From: Salam Noureddine <noureddine@xxxxxxxxxxxxxxxxxx>

[ Upstream commit 9260d3e1013701aa814d10c8fc6a9f92bd17d643 ]

It is possible for the timer handlers to run after the call to
ipv6_mc_down so use in6_dev_put instead of __in6_dev_put in the
handler function in order to do proper cleanup when the refcnt
reaches 0. Otherwise, the refcnt can reach zero without the
inet6_dev being destroyed and we end up leaking a reference to
the net_device and see messages like the following,

unregister_netdevice: waiting for eth0 to become free. Usage count = 1

Tested on linux-3.4.43.

Signed-off-by: Salam Noureddine <noureddine@xxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ipv6/mcast.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -2159,7 +2159,7 @@ static void mld_gq_timer_expire(unsigned
 
 	idev->mc_gq_running = 0;
 	mld_send_report(idev, NULL);
-	__in6_dev_put(idev);
+	in6_dev_put(idev);
 }
 
 static void mld_ifc_timer_expire(unsigned long data)
@@ -2172,7 +2172,7 @@ static void mld_ifc_timer_expire(unsigne
 		if (idev->mc_ifc_count)
 			mld_ifc_start_timer(idev, idev->mc_maxdelay);
 	}
-	__in6_dev_put(idev);
+	in6_dev_put(idev);
 }
 
 static void mld_ifc_event(struct inet6_dev *idev)


Patches currently in stable-queue which might be from noureddine@xxxxxxxxxxxxxxxxxx are

queue-3.0/ipv6-mcast-use-in6_dev_put-in-timer-handlers-instead-of-__in6_dev_put.patch
queue-3.0/ipv4-igmp-use-in_dev_put-in-timer-handlers-instead-of-__in_dev_put.patch
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