diff options
| author | Lizhi Xu <lizhi.xu@windriver.com> | 2024-06-05 09:23:35 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2024-08-20 21:37:18 -0400 |
| commit | 985b67cd86392310d9e9326de941c22fc9340eec (patch) | |
| tree | 8f0e2581d1cf55f599bb3321a37ff679d925391c /fs/ext4/super.c | |
| parent | a3c3eecc7c876c7f2b09d9ee1acf5b8b85996cff (diff) | |
ext4: filesystems without casefold feature cannot be mounted with siphash
When mounting the ext4 filesystem, if the default hash version is set to
DX_HASH_SIPHASH but the casefold feature is not set, exit the mounting.
Reported-by: syzbot+340581ba9dceb7e06fb3@syzkaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Link: https://patch.msgid.link/20240605012335.44086-1-lizhi.xu@windriver.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index e72145c4ae5a..25cd0d662e31 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3582,6 +3582,13 @@ int ext4_feature_set_ok(struct super_block *sb, int readonly) "mounted without CONFIG_UNICODE"); return 0; } + if (EXT4_SB(sb)->s_es->s_def_hash_version == DX_HASH_SIPHASH && + !ext4_has_feature_casefold(sb)) { + ext4_msg(sb, KERN_ERR, + "Filesystem without casefold feature cannot be " + "mounted with siphash"); + return 0; + } if (readonly) return 1; |