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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 E655DC43603 for ; Sun, 8 Dec 2019 13:55:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3169206E0 for ; Sun, 8 Dec 2019 13:55:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727081AbfLHNzA (ORCPT ); Sun, 8 Dec 2019 08:55:00 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:60726 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727016AbfLHNyv (ORCPT ); Sun, 8 Dec 2019 08:54:51 -0500 Received: from [192.168.4.242] (helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1idx1C-0007eF-Tc; Sun, 08 Dec 2019 13:54:38 +0000 Received: from ben by deadeye with local (Exim 4.93-RC1) (envelope-from ) id 1idx1B-0002ND-Li; Sun, 08 Dec 2019 13:54:37 +0000 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, Denis Kirjanov , "Martin Schwidefsky" , "David Howells" , "Al Viro" , linux-s390@vger.kernel.org, "Heiko Carstens" Date: Sun, 08 Dec 2019 13:53:19 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) X-Patchwork-Hint: ignore Subject: [PATCH 3.16 35/72] hypfs: Fix error number left in struct pointer member In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.242 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.79-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: David Howells commit b54c64f7adeb241423cd46598f458b5486b0375e upstream. In hypfs_fill_super(), if hypfs_create_update_file() fails, sbi->update_file is left holding an error number. This is passed to hypfs_kill_super() which doesn't check for this. Fix this by not setting sbi->update_value until after we've checked for error. Fixes: 24bbb1faf3f0 ("[PATCH] s390_hypfs filesystem") Signed-off-by: David Howells cc: Martin Schwidefsky cc: Heiko Carstens cc: linux-s390@vger.kernel.org Signed-off-by: Al Viro Signed-off-by: Ben Hutchings --- arch/s390/hypfs/inode.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -275,7 +275,7 @@ static int hypfs_show_options(struct seq static int hypfs_fill_super(struct super_block *sb, void *data, int silent) { struct inode *root_inode; - struct dentry *root_dentry; + struct dentry *root_dentry, *update_file; int rc = 0; struct hypfs_sb_info *sbi; @@ -306,9 +306,10 @@ static int hypfs_fill_super(struct super rc = hypfs_diag_create_files(root_dentry); if (rc) return rc; - sbi->update_file = hypfs_create_update_file(root_dentry); - if (IS_ERR(sbi->update_file)) - return PTR_ERR(sbi->update_file); + update_file = hypfs_create_update_file(root_dentry); + if (IS_ERR(update_file)) + return PTR_ERR(update_file); + sbi->update_file = update_file; hypfs_update_update(sb); pr_info("Hypervisor filesystem mounted\n"); return 0;