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=-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 CE19DECE595 for ; Sun, 6 Oct 2019 17:20:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6DA021927 for ; Sun, 6 Oct 2019 17:20:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382415; bh=A7GZAnfAyDSBIRqcMyz/rqC9/Sv2BmrCZAvB7h4kXBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=noXx1lF7zluhAdC7r5kF7f78SALUcE5ywImIRhMZZK+xQCHMmZ2dN9VRb9eAroEki bSPtaFrrPM6Igql7m3xqYhYiWM+h259/q2utzd4cY5oyIBnokBPH+1/9LRo3awGh+M /Grx0FSjfOpQ966nho/U5w7ooai0MCai1lVmVH84= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727129AbfJFRUJ (ORCPT ); Sun, 6 Oct 2019 13:20:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:44964 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726992AbfJFRT6 (ORCPT ); Sun, 6 Oct 2019 13:19:58 -0400 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 908C220835; Sun, 6 Oct 2019 17:19:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382398; bh=A7GZAnfAyDSBIRqcMyz/rqC9/Sv2BmrCZAvB7h4kXBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RG3Fq4nAJ6QQxm859k6y6w7KmOsVUlYDTt8gIwTicg6kkdZPE5oWuabUF9BbZKQZ8 CGKuLew4jxQDUA0MCQhhKbHp30WBKJfpBf+IqH8y9qrqWLH6Ftg+yZHTKISLfh2cmg ZTnIMYYAdnZDZxFhoSKSHJiHtfsOHseATycQD0kg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Howells , Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org, Al Viro , Sasha Levin Subject: [PATCH 4.4 20/36] hypfs: Fix error number left in struct pointer member Date: Sun, 6 Oct 2019 19:19:02 +0200 Message-Id: <20191006171053.385844992@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171038.266461022@linuxfoundation.org> References: <20191006171038.266461022@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Howells [ Upstream commit b54c64f7adeb241423cd46598f458b5486b0375e ] 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: Sasha Levin --- arch/s390/hypfs/inode.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index c670279b33f0c..1de3fdfc35378 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -267,7 +267,7 @@ static int hypfs_show_options(struct seq_file *s, struct dentry *root) 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; @@ -298,9 +298,10 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent) 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; -- 2.20.1