This patch fixes a problem identified by Johannes Berg. It looks like this is a classic case of "use-after-freed". A module which should reproduce the problem on any other USB device can be found right here: http://kerneltrap.org/mailarchive/linux-usb/2008/12/4/4317064 Tested-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Signed-off-by: Christian Lamparter <chunkeey@xxxxxx> CC: stable@xxxxxxxxxxxxxxx --- diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c index 3444f52..0b9a922 100644 --- a/drivers/net/wireless/p54/p54usb.c +++ b/drivers/net/wireless/p54/p54usb.c @@ -209,7 +209,14 @@ static void p54u_free_urbs(struct ieee80211_hw *dev) if (!info->urb) continue; + /* + * usb_get_urb and usb_free_urb are part of a temporary + * workaround. Otherwise we get a pretty bad freeze, + * if SLUB's poisoning debug option is enabled. + */ + usb_get_urb(info->urb); usb_kill_urb(info->urb); + usb_free_urb(info->urb); kfree_skb(skb); } } -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
