From patchwork Fri May 31 08:56:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhi Xu X-Patchwork-Id: 13681337 Received: from mx0b-0064b401.pphosted.com (mx0b-0064b401.pphosted.com [205.220.178.238]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88EA843154; Fri, 31 May 2024 08:57:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.178.238 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717145828; cv=none; b=paP0dVHoklQ2o2GtqvRbACJSPW+6aaNFjal8RNod+Jv7pUmAH1+SS2iBqKhz0dDUSyyrQ/qG7vRsAjw6A2D+Xhh1QeW0/jVXJ3goSEjHKit6JAboSbX4aLWDzSkDaT/ROjO8GSd3YPnA4F7LiV9KZlj8BS5qDWkVe6p5rvkka0Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717145828; c=relaxed/simple; bh=kPaFz5uK0ZOx/rIMQz/T/Y/SU8NEW+MLiaH5hug2usI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=PkG6KFxOVBkAHc7mrtzu5bELm+so2l9OJVK2/cc6YtR0ZJtynLv1rg0A5su0ndwLhKW3NRigOE3Ko/fT0e5LK7NZJkJcP3NMsFeD4a39kC+DObrPsatIcjFYEla6FVCSnxPlwEErMzJ3thUOvLN3z0tAwOtgu0GqTujVyWF2jeA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=windriver.com; spf=pass smtp.mailfrom=windriver.com; arc=none smtp.client-ip=205.220.178.238 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=windriver.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=windriver.com Received: from pps.filterd (m0250812.ppops.net [127.0.0.1]) by mx0a-0064b401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 44V4tQal022085; Fri, 31 May 2024 08:56:54 GMT Received: from ala-exchng02.corp.ad.wrs.com (ala-exchng02.wrs.com [147.11.82.254]) by mx0a-0064b401.pphosted.com (PPS) with ESMTPS id 3yf5ydg88n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 31 May 2024 08:56:53 +0000 (GMT) Received: from ala-exchng01.corp.ad.wrs.com (147.11.82.252) by ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Fri, 31 May 2024 01:56:52 -0700 Received: from pek-lpd-ccm6.wrs.com (147.11.136.210) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Fri, 31 May 2024 01:56:48 -0700 From: Lizhi Xu To: CC: , , , , , , , , , , , , , , , , Subject: [PATCH V3] ext4: check hash version and filesystem casefolded consistent Date: Fri, 31 May 2024 16:56:47 +0800 Message-ID: <20240531085647.2918240-1-lizhi.xu@windriver.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240531033407.GB6505@sol.localdomain> References: <20240531033407.GB6505@sol.localdomain> Precedence: bulk X-Mailing-List: linux-fscrypt@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: BCm3wry5b9WNN3q2iVIUrHzGri0mMOPg X-Proofpoint-GUID: BCm3wry5b9WNN3q2iVIUrHzGri0mMOPg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-31_05,2024-05-30_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 impostorscore=0 priorityscore=1501 spamscore=0 malwarescore=0 suspectscore=0 clxscore=1015 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.21.0-2405170001 definitions=main-2405310066 When mounting the ext4 filesystem, if the hash version and casefolded are not consistent, exit the mounting. Reported-by: syzbot+340581ba9dceb7e06fb3@syzkaller.appspotmail.com Signed-off-by: Lizhi Xu --- fs/ext4/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c682fb927b64..c0036e3922c2 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5262,6 +5262,9 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) goto failed_mount; ext4_hash_info_init(sb); + if (es->s_def_hash_version == DX_HASH_SIPHASH && + !ext4_has_feature_casefold(sb)) + goto failed_mount; err = ext4_handle_clustersize(sb); if (err)