From patchwork Thu Feb 27 13:35:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 230095 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,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 95DFEC34022 for ; Thu, 27 Feb 2020 14:49:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D31624691 for ; Thu, 27 Feb 2020 14:49:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582814967; bh=dlGLd9GTpAn/oJ13+6HiwaEdL0sLF13N/akgSQsX7/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nFVS7uMiskNPdZU8v52gHIxUNYQXA3MGb4w0qVvWghvzBs7NEB9/fIG/cih+69+XP n6rliZSzHDTa+s30ITL0B9f6K2AJO7/P/C7N+mRNNupltHleQlUXFjZGLJbqXpMZlP +RDRx6AzUNhNmUD9VvAu8Qqa4nhqPRNy3tVTZGeg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729221AbgB0Ot0 (ORCPT ); Thu, 27 Feb 2020 09:49:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:35854 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729517AbgB0NlR (ORCPT ); Thu, 27 Feb 2020 08:41:17 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BFCE620726; Thu, 27 Feb 2020 13:41:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582810876; bh=dlGLd9GTpAn/oJ13+6HiwaEdL0sLF13N/akgSQsX7/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Sjvgt/1GqyjJ+tRa7COUqdpekQA7W60dIgpXmlkizHYKKH3FX3ceQ73bitAxXaj36 456pzizmIOwcDR756/yYf6o3nr875/4QWH6Dp5b6YMMZAj+x4qDkdishaTJqXCLKhI lZnO+lWHWFVXTN0ODzD5E1kv8bkqLGxndKNyJyks= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "zhangyi (F)" , Jan Kara , Theodore Tso , Sasha Levin Subject: [PATCH 4.4 032/113] ext4, jbd2: ensure panic when aborting with zero errno Date: Thu, 27 Feb 2020 14:35:48 +0100 Message-Id: <20200227132216.847235248@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200227132211.791484803@linuxfoundation.org> References: <20200227132211.791484803@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: zhangyi (F) [ Upstream commit 51f57b01e4a3c7d7bdceffd84de35144e8c538e7 ] JBD2_REC_ERR flag used to indicate the errno has been updated when jbd2 aborted, and then __ext4_abort() and ext4_handle_error() can invoke panic if ERRORS_PANIC is specified. But if the journal has been aborted with zero errno, jbd2_journal_abort() didn't set this flag so we can no longer panic. Fix this by always record the proper errno in the journal superblock. Fixes: 4327ba52afd03 ("ext4, jbd2: ensure entering into panic after recording an error in superblock") Signed-off-by: zhangyi (F) Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20191204124614.45424-3-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/jbd2/checkpoint.c | 2 +- fs/jbd2/journal.c | 15 ++++----------- 2 files changed, 5 insertions(+), 12 deletions(-) diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 4d5a5a4cc017c..addb0784dd1c4 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -168,7 +168,7 @@ void __jbd2_log_wait_for_space(journal_t *journal) "journal space in %s\n", __func__, journal->j_devname); WARN_ON(1); - jbd2_journal_abort(journal, 0); + jbd2_journal_abort(journal, -EIO); } write_lock(&journal->j_state_lock); } else { diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index deb3300299709..d62435897d0d0 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -2086,12 +2086,10 @@ static void __journal_abort_soft (journal_t *journal, int errno) __jbd2_journal_abort_hard(journal); - if (errno) { - jbd2_journal_update_sb_errno(journal); - write_lock(&journal->j_state_lock); - journal->j_flags |= JBD2_REC_ERR; - write_unlock(&journal->j_state_lock); - } + jbd2_journal_update_sb_errno(journal); + write_lock(&journal->j_state_lock); + journal->j_flags |= JBD2_REC_ERR; + write_unlock(&journal->j_state_lock); } /** @@ -2133,11 +2131,6 @@ static void __journal_abort_soft (journal_t *journal, int errno) * failure to disk. ext3_error, for example, now uses this * functionality. * - * Errors which originate from within the journaling layer will NOT - * supply an errno; a null errno implies that absolutely no further - * writes are done to the journal (unless there are any already in - * progress). - * */ void jbd2_journal_abort(journal_t *journal, int errno)