From e61b52d1309df08b86a35e54a61f0cc932b28291 Mon Sep 17 00:00:00 2001
From: Pavel Roskin <proski@gnu.org>
Date: Fri, 22 Jul 2011 18:07:13 -0400
Subject: [PATCH] b43: fix invalid memory access in b43_ssb_remove()
wldev is freed in b43_one_core_detach() and should not be accessed after
that call. Keep wldev->dev in a local variable.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/b43/main.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index d9f53b791b215..85d6a1f03a089 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -5350,6 +5350,7 @@ static void b43_ssb_remove(struct ssb_device *sdev)
{
struct b43_wl *wl = ssb_get_devtypedata(sdev);
struct b43_wldev *wldev = ssb_get_drvdata(sdev);
+ struct b43_bus_dev *dev = wldev->dev;
/* We must cancel any work here before unregistering from ieee80211,
* as the ieee80211 unreg will destroy the workqueue. */
@@ -5365,14 +5366,14 @@ static void b43_ssb_remove(struct ssb_device *sdev)
ieee80211_unregister_hw(wl->hw);
}
- b43_one_core_detach(wldev->dev);
+ b43_one_core_detach(dev);
if (list_empty(&wl->devlist)) {
b43_leds_unregister(wl);
/* Last core on the chip unregistered.
* We can destroy common struct b43_wl.
*/
- b43_wireless_exit(wldev->dev, wl);
+ b43_wireless_exit(dev, wl);
}
}
--
2.30.2