On Fri, May 31, 2024 at 05:06:11PM +0800, 'Lizhi Xu' via syzkaller-bugs wrote:
> When mounting the ext4 filesystem, if the hash version and casefolded are not
> consistent, exit the mounting.
>
> Reported-by: syzbot+340581ba9dceb7e06fb3@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Lizhi Xu <lizhi.xu@xxxxxxxxxxxxx>
> ---
> 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;
> + }
For the third time: you need to use the correct mailing lists.
Please follow Documentation/process/submitting-patches.rst.
- Eric
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