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Message-ID: <20240601113749.473058-1-lizhi.xu@windriver.com>
Date: Sat, 1 Jun 2024 19:37:49 +0800
From: Lizhi Xu <lizhi.xu@...driver.com>
To: <lkp@...el.com>
CC: <coreteam@...filter.org>, <davem@...emloft.net>, <ebiggers@...nel.org>,
<fw@...len.de>, <jaegeuk@...nel.org>, <kadlec@...filter.org>,
<kuba@...nel.org>, <linux-fscrypt@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <lizhi.xu@...driver.com>,
<llvm@...ts.linux.dev>, <netdev@...r.kernel.org>,
<netfilter-devel@...r.kernel.org>, <oe-kbuild-all@...ts.linux.dev>,
<pablo@...filter.org>,
<syzbot+340581ba9dceb7e06fb3@...kaller.appspotmail.com>,
<syzkaller-bugs@...glegroups.com>, <tytso@....edu>,
<adilger.kernel@...ger.ca>, <linux-ext4@...r.kernel.org>
Subject: [PATCH V5] ext4: check hash version and filesystem casefolded consistent
When mounting the ext4 filesystem, if the hash version and casefolded are not
consistent, exit the mounting.
Reported-by: syzbot+340581ba9dceb7e06fb3@...kaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@...driver.com>
---
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)
--
2.43.0
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