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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 6EB69C07E9B for ; Mon, 12 Jul 2021 09:04:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A87960FF0 for ; Mon, 12 Jul 2021 09:04:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1384109AbhGLJDk (ORCPT ); Mon, 12 Jul 2021 05:03:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:54952 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353831AbhGLIDB (ORCPT ); Mon, 12 Jul 2021 04:03:01 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2FFE361D0F; Mon, 12 Jul 2021 07:57:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626076670; bh=KAKAfrjbgm4LtpuO+1fIvwfG6BFIeqJY3E0kkZXwdVo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N8H85t2h9gMqX00dOXBogyP6Vmu8zNcdPVOQlECjbOAYh2kttHmVx7JCQSc7D631d Uu7W9yBs4w15TVE7yhQGdqnmDN9aZtiAJ3P4RwAYzFoJdQKZr6sy/TTHd26aT7iDwe 0U5Gd7yQKH0rkKCYQOPQIYbuPCHqoPmGlYXQdnR8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chung-Chiang Cheng , Christoph Hellwig , Sasha Levin Subject: [PATCH 5.13 741/800] configfs: fix memleak in configfs_release_bin_file Date: Mon, 12 Jul 2021 08:12:44 +0200 Message-Id: <20210712061045.602540729@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060912.995381202@linuxfoundation.org> References: <20210712060912.995381202@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chung-Chiang Cheng [ Upstream commit 3c252b087de08d3cb32468b54a158bd7ad0ae2f7 ] When reading binary attributes in progress, buffer->bin_buffer is setup in configfs_read_bin_file() but never freed. Fixes: 03607ace807b4 ("configfs: implement binary attributes") Signed-off-by: Chung-Chiang Cheng [hch: move the vfree rather than duplicating it] Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- fs/configfs/file.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/configfs/file.c b/fs/configfs/file.c index e26060dae70a..b4b0fbabd62e 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -480,13 +480,13 @@ static int configfs_release_bin_file(struct inode *inode, struct file *file) buffer->bin_buffer_size); } up_read(&frag->frag_sem); - /* vfree on NULL is safe */ - vfree(buffer->bin_buffer); - buffer->bin_buffer = NULL; - buffer->bin_buffer_size = 0; - buffer->needs_read_fill = 1; } + vfree(buffer->bin_buffer); + buffer->bin_buffer = NULL; + buffer->bin_buffer_size = 0; + buffer->needs_read_fill = 1; + configfs_release(inode, file); return 0; } -- 2.30.2