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 6D512C433E2 for ; Mon, 7 Sep 2020 16:52:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 34A082080A for ; Mon, 7 Sep 2020 16:52:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599497549; bh=jSNM2WKR7IWt6Rx42MjBo7X4DHyVpDHdJKnjxra5w/M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DCWM7Y960+ESKCllCkbYX82ceMt3lp+Kq0nbUkjk2xKMUUifCN2/Ur2Y3IEwXRMGO Dg8/cUft7RMxbjwnHOjUrMh3bftHuJqB1QOw0y/EFAeS9qlp1lykcKdRav3Yybac8U AJn43KBcuED1zkZza/Dr6ntWFsaDH7eg6HCe1298= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730980AbgIGQw0 (ORCPT ); Mon, 7 Sep 2020 12:52:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:48576 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730548AbgIGQel (ORCPT ); Mon, 7 Sep 2020 12:34:41 -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 CF6E621927; Mon, 7 Sep 2020 16:34:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599496480; bh=jSNM2WKR7IWt6Rx42MjBo7X4DHyVpDHdJKnjxra5w/M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P84HHb07Mgkeb5zfnHM3M94uTurXBLlttD7Ogst0hFnD2aqy2HxmX1VLu7/deLQpy p/ZN9j8/x0D9Ok5OiBjKtzetr0EEmMBMVobVbuTbY+H+3jTiUzTwhBZYMuraSJRB9i UvuxP5PoBiMKflwqtayiOmHwmDeZ5e++APuIRl5E= 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 4.19 11/26] xfs: initialize the shortform attr header padding entry Date: Mon, 7 Sep 2020 12:34:11 -0400 Message-Id: <20200907163426.1281284-11-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200907163426.1281284-1-sashal@kernel.org> References: <20200907163426.1281284-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@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 2652d00842d6b..c7025e759bf2e 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -551,8 +551,8 @@ xfs_attr_shortform_create(xfs_da_args_t *args) 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