This is a note to let you know that I've just added the patch titled
mwifiex: fix memory leak issue when driver unload
to the 3.9-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:
mwifiex-fix-memory-leak-issue-when-driver-unload.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f16fdc9d2dc1e5b270e9a08377587e831e0d36ac Mon Sep 17 00:00:00 2001
From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Date: Mon, 6 May 2013 19:46:54 -0700
Subject: mwifiex: fix memory leak issue when driver unload
From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
commit f16fdc9d2dc1e5b270e9a08377587e831e0d36ac upstream.
After unregister_netdevice() call the request is queued and
reg_state is changed to NETREG_UNREGISTERING.
As we check for NETREG_UNREGISTERED state, free_netdev() never
gets executed causing memory leak.
Initialize "dev->destructor" to free_netdev() to free device
data after unregistration.
Reported-by: Daniel Drake <dsd@xxxxxxxxxx>
Tested-by: Daniel Drake <dsd@xxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/cfg80211.c | 3 ---
drivers/net/wireless/mwifiex/main.c | 1 +
2 files changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -2280,9 +2280,6 @@ int mwifiex_del_virtual_intf(struct wiph
if (wdev->netdev->reg_state == NETREG_REGISTERED)
unregister_netdevice(wdev->netdev);
- if (wdev->netdev->reg_state == NETREG_UNREGISTERED)
- free_netdev(wdev->netdev);
-
/* Clear the priv in adapter */
priv->netdev = NULL;
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -646,6 +646,7 @@ void mwifiex_init_priv_params(struct mwi
struct net_device *dev)
{
dev->netdev_ops = &mwifiex_netdev_ops;
+ dev->destructor = free_netdev;
/* Initialize private structure */
priv->current_key_index = 0;
priv->media_connected = false;
Patches currently in stable-queue which might be from akarwar@xxxxxxxxxxx are
queue-3.9/mwifiex-fix-memory-leak-issue-when-driver-unload.patch
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