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=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 2B1C3C636C9 for ; Mon, 19 Jul 2021 15:46:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C401611CE for ; Mon, 19 Jul 2021 15:46:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343998AbhGSPFi (ORCPT ); Mon, 19 Jul 2021 11:05:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:40962 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344360AbhGSOsq (ORCPT ); Mon, 19 Jul 2021 10:48:46 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C481061414; Mon, 19 Jul 2021 15:28:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626708504; bh=e/t+Eql9McZy7cBkKG4voKW0X9/5Nu2g5zKr4Q3TQDk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DnoytZCWT1i7vYtAH2bt2Pr+pKi1CA47NGb0en5PzGFUeNPvXHXF2TxwzR66RvD3v xTSFG5AKe9y1FT6xPueq9gj1IuUF9tM6uOaKvUd5GZmh2JudRUs43/SfWvRvOreydU uQvcohBuZi28lvq6U/Z/7HmdFdhRu1WxgegeGmrQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, stable@kernel.org, Zhang Yi , Jan Kara , Theodore Tso Subject: [PATCH 4.19 019/421] ext4: cleanup in-core orphan list if ext4_truncate() failed to get a transaction handle Date: Mon, 19 Jul 2021 16:47:10 +0200 Message-Id: <20210719144946.936974972@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144946.310399455@linuxfoundation.org> References: <20210719144946.310399455@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: Zhang Yi commit b9a037b7f3c401d3c63e0423e56aef606b1ffaaf upstream. In ext4_orphan_cleanup(), if ext4_truncate() failed to get a transaction handle, it didn't remove the inode from the in-core orphan list, which may probably trigger below error dump in ext4_destroy_inode() during the final iput() and could lead to memory corruption on the later orphan list changes. EXT4-fs (sda): Inode 6291467 (00000000b8247c67): orphan list check failed! 00000000b8247c67: 0001f30a 00000004 00000000 00000023 ............#... 00000000e24cde71: 00000006 014082a3 00000000 00000000 ......@......... 0000000072c6a5ee: 00000000 00000000 00000000 00000000 ................ ... This patch fix this by cleanup in-core orphan list manually if ext4_truncate() return error. Cc: stable@kernel.org Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20210507071904.160808-1-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/super.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2689,8 +2689,15 @@ static void ext4_orphan_cleanup(struct s inode_lock(inode); truncate_inode_pages(inode->i_mapping, inode->i_size); ret = ext4_truncate(inode); - if (ret) + if (ret) { + /* + * We need to clean up the in-core orphan list + * manually if ext4_truncate() failed to get a + * transaction handle. + */ + ext4_orphan_del(NULL, inode); ext4_std_error(inode->i_sb, ret); + } inode_unlock(inode); nr_truncates++; } else {