From: Pavel Roskin Date: Fri, 22 Jul 2011 22:07:13 +0000 (-0400) Subject: b43: fix invalid memory access in b43_ssb_remove() X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e61b52d1309df08b86a35e54a61f0cc932b28291;p=linux-beck.git 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 Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index d9f53b791b21..85d6a1f03a08 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); } }