netdev - [PATCH] xen/netfront: teardown the device before unregistering it.

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Message-ID: <1340700521-13012-1-git-send-email-ian.campbell@citrix.com>
Date:	Tue, 26 Jun 2012 09:48:41 +0100
From:	Ian Campbell <ian.campbell@...rix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	xen-devel@...ts.xen.org, netdev@...r.kernel.org,
	Ian Campbell <ian.campbell@...rix.com>, stable@...nel.org,
	675190@...s.debian.org
Subject: [PATCH] xen/netfront: teardown the device before unregistering it.

Fixes:
[   15.470311] WARNING: at /local/scratch/ianc/devel/kernels/linux/fs/sysfs/file.c:498 sysfs_attr_ns+0x95/0xa0()
[   15.470326] sysfs: kobject eth0 without dirent
[   15.470333] Modules linked in:
[   15.470342] Pid: 12, comm: xenwatch Not tainted 3.4.0-x86_32p-xenU #93
and
[    9.150554] BUG: unable to handle kernel paging request at 2b359000
[    9.150577] IP: [<c1279561>] linkwatch_do_dev+0x81/0xc0
[    9.150592] *pdpt = 000000002c3c9027 *pde = 0000000000000000
[    9.150604] Oops: 0002 [#1] SMP
[    9.150613] Modules linked in:

This is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675190

Reported-by: George Shuklin <george.shuklin@...il.com>
Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
Tested-by: William Dauchy <wdauchy@...il.com>
Cc: stable@...nel.org
Cc: 675190@...s.debian.org
---
 drivers/net/xen-netfront.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 0ebbb19..796afbf 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1935,14 +1935,14 @@ static int __devexit xennet_remove(struct xenbus_device *dev)
 
 	dev_dbg(&dev->dev, "%s\n", dev->nodename);
 
-	unregister_netdev(info->netdev);
-
 	xennet_disconnect_backend(info);
 
-	del_timer_sync(&info->rx_refill_timer);
-
 	xennet_sysfs_delif(info->netdev);
 
+	unregister_netdev(info->netdev);
+
+	del_timer_sync(&info->rx_refill_timer);
+
 	free_percpu(info->stats);
 
 	free_netdev(info->netdev);
-- 
1.7.2.5

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