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=-13.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 974AAC43461 for ; Mon, 7 Sep 2020 17:07:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 539122080A for ; Mon, 7 Sep 2020 17:07:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599498445; bh=BeoEQcWSG5XxXhCKTAJJ4E5k4Xx+lpPZfUpkNuKgCPQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GdIPQOxagIoKD7iDySC9ApeeeZG67tu115tHxhCVCZIXChHsqqfph2jDwzng2K5Fj 9nZRE56ThX9nsic+Bc/gZzG+f/WvyQGeXuw/0jwDbN6TeqF93p3jW6LYOpsuNGM76r atNzH6LSEcHAEjYnPLNIXq9IXdWy71c3VKnceMmU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730740AbgIGRHV (ORCPT ); Mon, 7 Sep 2020 13:07:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:46522 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730493AbgIGQcv (ORCPT ); Mon, 7 Sep 2020 12:32:51 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2C19E207DE; Mon, 7 Sep 2020 16:32:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599496371; bh=BeoEQcWSG5XxXhCKTAJJ4E5k4Xx+lpPZfUpkNuKgCPQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L17vctTCdsgWIKA6ZZjOHq22eEujksUoHZJWCa4Fvf3ovYEto4fIpjWG3m7jpozJ5 Wt/Mz3Z/LhhNLX+obo5PV9eCHFaVEX8AM7oDZ2Y5OEdBx6spXZa3PnJaQEbh1lXsjS R4HXE6eNUNjeigZiu9qFO1Hj3ms0GT/Jip4vGPOc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: "Darrick J. Wong" , Eric Sandeen , Dave Chinner , Christoph Hellwig , Sasha Levin , linux-xfs@vger.kernel.org Subject: [PATCH AUTOSEL 5.8 23/53] xfs: initialize the shortform attr header padding entry Date: Mon, 7 Sep 2020 12:31:49 -0400 Message-Id: <20200907163220.1280412-23-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200907163220.1280412-1-sashal@kernel.org> References: <20200907163220.1280412-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Darrick J. Wong" [ Upstream commit 125eac243806e021f33a1fdea3687eccbb9f7636 ] Don't leak kernel memory contents into the shortform attr fork. Signed-off-by: Darrick J. Wong Reviewed-by: Eric Sandeen Reviewed-by: Dave Chinner Reviewed-by: Christoph Hellwig Signed-off-by: Sasha Levin --- fs/xfs/libxfs/xfs_attr_leaf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index 2f7e89e4be3e3..0ab307bebedee 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -653,8 +653,8 @@ xfs_attr_shortform_create( ASSERT(ifp->if_flags & XFS_IFINLINE); } xfs_idata_realloc(dp, sizeof(*hdr), XFS_ATTR_FORK); - hdr = (xfs_attr_sf_hdr_t *)ifp->if_u1.if_data; - hdr->count = 0; + hdr = (struct xfs_attr_sf_hdr *)ifp->if_u1.if_data; + memset(hdr, 0, sizeof(*hdr)); hdr->totsize = cpu_to_be16(sizeof(*hdr)); xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA); } -- 2.25.1