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=-20.2 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, USER_AGENT_GIT 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 A683EC07E95 for ; Mon, 19 Jul 2021 15:12:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C1166121F for ; Mon, 19 Jul 2021 15:12:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244358AbhGSObZ (ORCPT ); Mon, 19 Jul 2021 10:31:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:40508 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244111AbhGSO3V (ORCPT ); Mon, 19 Jul 2021 10:29:21 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A38C86138C; Mon, 19 Jul 2021 15:08:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626707332; bh=+mr0Q12/HsfTHj3RrdpF01hzuwS04ZXkax8EBgThnG8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aW7U+sgzt+zR0dqD83/QYkjwkIbNmPZWCS5c4DRMRVJFO1YNTYPNfld6vn/SrLbuL Zdq3nsO1O6tHUrwPx4QppIOyfy5rqF3CdMIzQuS5GKMUOtnYHZ3bQjnqVT8097aELs SyiKlccz5Qywrei462pkkBKdpM4UTFhSKL5z3Ui0= 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 4.9 118/245] configfs: fix memleak in configfs_release_bin_file Date: Mon, 19 Jul 2021 16:51:00 +0200 Message-Id: <20210719144944.231184389@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144940.288257948@linuxfoundation.org> References: <20210719144940.288257948@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: stable@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 896e90dc9193..71f665eb0316 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -496,13 +496,13 @@ 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