From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from vs166246.vserver.de ([62.75.166.246]:56334 "EHLO vs166246.vserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752021AbYAWLD2 (ORCPT ); Wed, 23 Jan 2008 06:03:28 -0500 From: Michael Buesch To: John Linville Subject: [PATCH] b43: Fix rfkill allocation leakage in error paths Date: Wed, 23 Jan 2008 12:02:35 +0100 Cc: bcm43xx-dev@lists.berlios.de, linux-wireless@vger.kernel.org, Ben Greear MIME-Version: 1.0 Message-Id: <200801231202.36073.mb@bu3sch.de> (sfid-20080123_110331_345475_6C0DF838) Content-Type: text/plain; charset="us-ascii" Sender: linux-wireless-owner@vger.kernel.org List-ID: We must kill rfkill in any error paths that trigger after rfkill init. Signed-off-by: Michael Buesch --- John, please try to push this for 2.6.24. Seems quite important, as it leaks resources and might crash the kernel. Index: wireless-2.6/drivers/net/wireless/b43/main.c =================================================================== --- wireless-2.6.orig/drivers/net/wireless/b43/main.c 2008-01-23 11:52:50.000000000 +0100 +++ wireless-2.6/drivers/net/wireless/b43/main.c 2008-01-23 11:55:17.000000000 +0100 @@ -3626,38 +3626,45 @@ static void b43_op_remove_interface(stru static int b43_op_start(struct ieee80211_hw *hw) { struct b43_wl *wl = hw_to_b43_wl(hw); struct b43_wldev *dev = wl->current_dev; int did_init = 0; int err = 0; + bool do_rfkill_exit = 0; /* First register RFkill. * LEDs that are registered later depend on it. */ b43_rfkill_init(dev); mutex_lock(&wl->mutex); if (b43_status(dev) < B43_STAT_INITIALIZED) { err = b43_wireless_core_init(dev); - if (err) + if (err) { + do_rfkill_exit = 1; goto out_mutex_unlock; + } did_init = 1; } if (b43_status(dev) < B43_STAT_STARTED) { err = b43_wireless_core_start(dev); if (err) { if (did_init) b43_wireless_core_exit(dev); + do_rfkill_exit = 1; goto out_mutex_unlock; } } out_mutex_unlock: mutex_unlock(&wl->mutex); + if (do_rfkill_exit) + b43_rfkill_exit(dev); + return err; } static void b43_op_stop(struct ieee80211_hw *hw) { struct b43_wl *wl = hw_to_b43_wl(hw);