From patchwork Tue Jul 9 16:28:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Henriques X-Patchwork-Id: 257832 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id A016D2C009A for ; Wed, 10 Jul 2013 02:33:34 +1000 (EST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1Uwaqy-00015p-6L; Tue, 09 Jul 2013 16:33:24 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1Uwalp-0006AM-N7 for kernel-team@lists.ubuntu.com; Tue, 09 Jul 2013 16:28:05 +0000 Received: from bl15-104-132.dsl.telepac.pt ([188.80.104.132] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1Uwalo-0007x2-M7; Tue, 09 Jul 2013 16:28:04 +0000 From: Luis Henriques To: Jiang Liu Subject: [ 3.8.y.z extended stable ] Patch "zram: destroy all devices on error recovery path in" has been added to staging queue Date: Tue, 9 Jul 2013 17:28:03 +0100 Message-Id: <1373387283-20955-1-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.8.1.2 X-Extended-Stable: 3.8 Cc: Jerome Marchand , Jiang Liu , Greg Kroah-Hartman , Minchan Kim , kernel-team@lists.ubuntu.com X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: kernel-team-bounces@lists.ubuntu.com This is a note to let you know that I have just added a patch titled zram: destroy all devices on error recovery path in to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.8.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From c2b86777169147424b1a801072e89a1f7f84bb00 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 7 Jun 2013 00:07:24 +0800 Subject: [PATCH] zram: destroy all devices on error recovery path in zram_init() commit 39a9b8ac9333e4268ecff7da6c9d1ab3823ff243 upstream. On error recovery path of zram_init(), it leaks the zram device object causing the failure. So change create_device() to free allocated resources on error path. Signed-off-by: Jiang Liu Acked-by: Minchan Kim Acked-by: Jerome Marchand Signed-off-by: Greg Kroah-Hartman Signed-off-by: Luis Henriques --- drivers/staging/zram/zram_drv.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) -- 1.8.1.2 diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 0113897..ff2228e 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -628,7 +628,7 @@ static const struct block_device_operations zram_devops = { static int create_device(struct zram *zram, int device_id) { - int ret = 0; + int ret = -ENOMEM; init_rwsem(&zram->lock); init_rwsem(&zram->init_lock); @@ -638,7 +638,6 @@ static int create_device(struct zram *zram, int device_id) if (!zram->queue) { pr_err("Error allocating disk queue for device %d\n", device_id); - ret = -ENOMEM; goto out; } @@ -648,11 +647,9 @@ static int create_device(struct zram *zram, int device_id) /* gendisk structure */ zram->disk = alloc_disk(1); if (!zram->disk) { - blk_cleanup_queue(zram->queue); pr_warn("Error allocating disk structure for device %d\n", device_id); - ret = -ENOMEM; - goto out; + goto out_free_queue; } zram->disk->major = zram_major; @@ -681,11 +678,17 @@ static int create_device(struct zram *zram, int device_id) &zram_disk_attr_group); if (ret < 0) { pr_warn("Error creating sysfs group"); - goto out; + goto out_free_disk; } zram->init_done = 0; + return 0; +out_free_disk: + del_gendisk(zram->disk); + put_disk(zram->disk); +out_free_queue: + blk_cleanup_queue(zram->queue); out: return ret; }