From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0841C7618E for ; Tue, 23 Jul 2019 09:29:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C767F223BA for ; Tue, 23 Jul 2019 09:29:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563874144; bh=cJwKFmtlzx4ZDbUn5nHHCAdzyj14lzgW7Jjr9XBrVsw=; h=Subject:To:Cc:From:Date:List-ID:From; b=YYDg+3Mv57jMGzYymBp4LSsJKHTCICr0gIELMN4qb08iPZIKTmL4R27OQ42flPzgC Kkgi8oih+x3OSxelw2MjQVbNBQw4axt3Qgryh3iPVVvlnQHkpMjkllH9B6Y+FBG5/I ub2YXT5kV3bIbfzxVJlvUkElQg8MzST4RXympd/E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726930AbfGWJ3E (ORCPT ); Tue, 23 Jul 2019 05:29:04 -0400 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]:55401 "EHLO wout2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728712AbfGWJ3E (ORCPT ); Tue, 23 Jul 2019 05:29:04 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.west.internal (Postfix) with ESMTP id 3908C59B; Tue, 23 Jul 2019 05:29:03 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Tue, 23 Jul 2019 05:29:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=PbbPgH WaeLz+t6Q61qZxq0lGj5DVbPJ31Zf8cVAizbc=; b=Dio/13PjrARTIAyDLnRJc9 tZSDXJ2smif+oB3rP6wfbLGC0gBo8NlcPmC4FWy6VAfArXDERKkSYLNsf7u4LWgz JW5JACnbC45tNYkuz1tvRK8FHg3HZ8n5LfTe4VZd3bgR4vp3Osg48LSlqOsf2ltM iI8A4qL8ZBodYQ58t/OqTMU67Ogl33d942SAnliQqnnJmzF3Hohzm4+UKmtLdmet cTOLfCdCFVnPv1BplWDq+G8A6GMydorPM4+PNPrvhNrSnrc+beg7bjyiNBVjhj6k lHRdgiHK8IhcPxtEk+okNU+cIoBTTtIznXZrnrwk/rMbC7vEPKVynl8FmFhDU8wg == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduvddrjeekgdduiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepuffvhfffkfggtgfgsehtkeertddttd flnecuhfhrohhmpeeoghhrvghgkhhhsehlihhnuhigfhhouhhnuggrthhiohhnrdhorhhg qeenucfkphepkeefrdekiedrkeelrddutdejnecurfgrrhgrmhepmhgrihhlfhhrohhmpe hgrhgvgheskhhrohgrhhdrtghomhenucevlhhushhtvghrufhiiigvpedv X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id 52506380085; Tue, 23 Jul 2019 05:29:02 -0400 (EDT) Subject: FAILED: patch "[PATCH] bcache: destroy dc->writeback_write_wq if failed to create" failed to apply to 4.9-stable tree To: colyli@suse.de, axboe@kernel.dk Cc: From: Date: Tue, 23 Jul 2019 11:28:51 +0200 Message-ID: <1563874131121182@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f54d801dda14942dbefa00541d10603015b7859c Mon Sep 17 00:00:00 2001 From: Coly Li Date: Fri, 28 Jun 2019 19:59:44 +0800 Subject: [PATCH] bcache: destroy dc->writeback_write_wq if failed to create dc->writeback_thread Commit 9baf30972b55 ("bcache: fix for gc and write-back race") added a new work queue dc->writeback_write_wq, but forgot to destroy it in the error condition when creating dc->writeback_thread failed. This patch destroys dc->writeback_write_wq if kthread_create() returns error pointer to dc->writeback_thread, then a memory leak is avoided. Fixes: 9baf30972b55 ("bcache: fix for gc and write-back race") Signed-off-by: Coly Li Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 262f7ef20992..21081febcb59 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -833,6 +833,7 @@ int bch_cached_dev_writeback_start(struct cached_dev *dc) "bcache_writeback"); if (IS_ERR(dc->writeback_thread)) { cached_dev_put(dc); + destroy_workqueue(dc->writeback_write_wq); return PTR_ERR(dc->writeback_thread); } dc->writeback_running = true;