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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 6D3A0C433DB for ; Thu, 28 Jan 2021 07:47:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21FAD64DD6 for ; Thu, 28 Jan 2021 07:47:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232253AbhA1Hrf (ORCPT ); Thu, 28 Jan 2021 02:47:35 -0500 Received: from mail.synology.com ([211.23.38.101]:54226 "EHLO synology.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231478AbhA1HOX (ORCPT ); Thu, 28 Jan 2021 02:14:23 -0500 Received: from localhost.localdomain (unknown [10.17.32.161]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by synology.com (Postfix) with ESMTPSA id DE71ACE781E9; Thu, 28 Jan 2021 15:13:41 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synology.com; s=123; t=1611818021; bh=mfQSo2y1ioyoR0zeX+3qv6/nwQu3gb5J4I0HNXMlFXw=; h=From:To:Cc:Subject:Date; b=ODsPWgo2h9ZiDzgqnz5OtUW4WigYRAx+gLHtzvjBlr7Zu3Iq8phZIZkfFCOBby6X5 puZefx1OkbbnZQI2nUMIzs8bkbDfq4BxPOaanZtAs+DAhTEeDnIE0mG5vH2lOuyVmW wcp0VPuZI2jbYpyWAdHACbIVnPHIpAjqVUEHWJR0= From: bingjingc To: viro@zeniv.linux.org.uk, jack@suse.com, jack@suse.cz, axboe@kernel.dk, linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, cccheng@synology.com, bingjingc@synology.com, robbieko@synology.com, willy@infradead.org, rdunlap@infradead.org Subject: [PATCH v2 2/3] isofs: handle large user and group ID Date: Thu, 28 Jan 2021 15:13:32 +0800 Message-Id: <1611818012-2946-1-git-send-email-bingjingc@synology.com> X-Mailer: git-send-email 2.7.4 X-Synology-MCP-Status: no X-Synology-Spam-Flag: no X-Synology-Spam-Status: score=0, required 6, WHITELIST_FROM_ADDRESS 0 X-Synology-Virus-Status: no Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: BingJing Chang If uid or gid of mount options is larger than INT_MAX, isofs_fill_super will return -EINVAL. The problem can be encountered by a domain user or reproduced via: mount -o loop,uid=2147483648 ubuntu-16.04.6-server-amd64.iso /mnt This can be fixed as commit 233a01fa9c4c ("fuse: handle large user and group ID"). Reviewed-by: Robbie Ko Reviewed-by: Chung-Chiang Cheng Reviewed-by: Matthew Wilcox Signed-off-by: BingJing Chang --- fs/isofs/inode.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index ec90773..21edc42 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -339,6 +339,7 @@ static int parse_options(char *options, struct iso9660_options *popt) { char *p; int option; + unsigned int uv; popt->map = 'n'; popt->rock = 1; @@ -434,17 +435,17 @@ static int parse_options(char *options, struct iso9660_options *popt) case Opt_ignore: break; case Opt_uid: - if (match_int(&args[0], &option)) + if (match_uint(&args[0], &uv)) return 0; - popt->uid = make_kuid(current_user_ns(), option); + popt->uid = make_kuid(current_user_ns(), uv); if (!uid_valid(popt->uid)) return 0; popt->uid_set = 1; break; case Opt_gid: - if (match_int(&args[0], &option)) + if (match_uint(&args[0], &uv)) return 0; - popt->gid = make_kgid(current_user_ns(), option); + popt->gid = make_kgid(current_user_ns(), uv); if (!gid_valid(popt->gid)) return 0; popt->gid_set = 1; -- 2.7.4