From patchwork Sat Jun 1 11:37:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhi Xu X-Patchwork-Id: 13682360 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 B8419335A7; Sat, 1 Jun 2024 11:38:29 +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=1717241911; cv=none; b=XfDPAPtoDc4DmSEUX+km/HvakQaOldDVsOA1f8ypyWvloE6RkxsQIwlVCpxLKKhBmFXHGtbbgCTrxn3VIzgdb+6vnmDZO7E20/aLRczJbv3wFv4yYZFz/EALMHcFea39PE7G9jlVcMkKNNeAPqtf2062D2glwDLPpFdEWtkA2sk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717241911; c=relaxed/simple; bh=uAJlqDMiuKeV1HJo6t1t12QkEwDuIC/XqQuiy4tqFGg=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=CYvWJ1UL/j4itSc6sOp2xSj7wVOXXyNVNXLHEEqEzPITMMPv5afzPOoYJax2sy4ifRxBkkHRabRnqNGPl7SNl3JB5R8aBhNpvq38g8ngami6kBpEWCVUU/Fag4svCcG902G63V+mz031DkNUvX18mEMy+I5cGZtRGKdy+OdhrPc= 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 (m0250811.ppops.net [127.0.0.1]) by mx0a-0064b401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 451Ao3b6025787; Sat, 1 Jun 2024 11:37:57 GMT Received: from ala-exchng01.corp.ad.wrs.com (ala-exchng01.wrs.com [147.11.82.252]) by mx0a-0064b401.pphosted.com (PPS) with ESMTPS id 3yfrux8a77-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Sat, 01 Jun 2024 11:37:56 +0000 (GMT) Received: from ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sat, 1 Jun 2024 04:37:55 -0700 Received: from pek-lpd-ccm6.wrs.com (147.11.136.210) by ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Sat, 1 Jun 2024 04:37:50 -0700 From: Lizhi Xu To: CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH V5] ext4: check hash version and filesystem casefolded consistent Date: Sat, 1 Jun 2024 19:37:49 +0800 Message-ID: <20240601113749.473058-1-lizhi.xu@windriver.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240531185519.GB1153@sol.localdomain> References: <20240531185519.GB1153@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: SajYroC-HqTmjkX9D0lmFQznohzPr4mF X-Proofpoint-GUID: SajYroC-HqTmjkX9D0lmFQznohzPr4mF 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=2024-06-01_05,2024-05-30_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 spamscore=0 mlxscore=0 priorityscore=1501 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.21.0-2405170001 definitions=main-2406010091 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 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c682fb927b64..0ad326504c50 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5262,6 +5262,11 @@ 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)) { + err = -EINVAL; + goto failed_mount; + } err = ext4_handle_clustersize(sb); if (err)