[PATCH v2 1/4] ppc64le: Revert "powerpc: Optimized strncmp for power10" (CVE-2025-5745)

[Carlos O'Donell]

On 6/16/25 5:58 PM, Siddhesh Poyarekar wrote:
> I verified that the reverts are clean by applying these commits and then running this command:
> 
> git log --pretty=oneline HEAD~4..HEAD | awk '{print $1}' |
> while read ref; do
>    diff -u \
>      <(git show -R --color=never \
>        $(git show $ref | sed -n 's/This reverts commit \(.*\)/\1/p')) \
>      <(git show --color=never $ref) | less;
> done
> 
> and confirmed that barring minor differences in Makefile contexts (which is expected), they are all straight reverts.
> 
> Thanks,
> Sid
> 
> On 2025-06-16 16:20, Carlos O'Donell wrote:
>> This reverts commit 23f0d81608d0ca6379894ef81670cf30af7fd081
>>
>> Reason for revert: Power10 strncmp clobbers non-volatile vector
>> registers (Bug 33060)
>>
>> Tested on ppc64le with no regressions.
>> ---
> 
> OK.
> 
> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

Sorry, I was *so* excited I pushed these without adding your RBs into the commits.

I'll add your RBs into the backports to active branches.

All 4 pushed and both CVEs now have fixed commits.

I need to update the advisory.

-- 
Cheers,
Carlos.