Re: [PATCH] ocfs2: validate xattr bucket count against extent size

[Joseph Qi]

On 10/28/26 1:02 PM, Jiale Yao wrote:
> The first xattr bucket stores the number of valid buckets in its extent.
> Lookup and iteration trust this on-disk value even when it exceeds the
> number of buckets covered by the extent record. A corrupted value can
> therefore make them read blocks beyond the extent.
> 
> Validate the count against the extent cluster count before using it.
> Reject zero as well because every xattr extent contains at least its first
> bucket.
> 

Please describe the user effect of this issue.

Thanks,
Joseph