[PATCH v3] elf: Release dl_load_lock before running dlopen constructors (BZ 15686)

[Carlos O'Donell]

On 7/21/26 9:04 AM, Mikhail Novosyolov wrote:
> 
> 21.07.2026 15:48, Carlos O'Donell пишет:
>> On 7/21/26 8:29 AM, Alexander Pevzner wrote:
>>> On 7/21/26 12:43 AM, Carlos O'Donell wrote:
>>>> We might be able to run with this change downstream in Fedora and
>>>> use our build infrastructure to do A/B build testing of the
>>>> distribution to see if something comes out of the larger scale
>>>> testing.
>>>
>>> BTW, I have tried the Artem's simple test on Fedora-44, and locking
>>> is fully reproduceable there.
>>
>> The goal is to test much more of userspace to determine the impact of the
>> change.
>>   
>> With mass-prebuild (https://gitlab.com/fedora/packager-tools/mass-prebuild) we
>> can build glibc with modifications into the COPR (default backend for mass
>> prebuild) and then do the A/B (build and test) of thousands of packages as a
>> proxy for finding issues.
> 
> This patch fixes a runtime issue, not a compile-time one.
> 
> A mass rebuild will show no new problems at build time.

This would be true if we only ran the rpm %build phase, but we run more.

When the mpb executes it will build the set of packages using the rpm
infrastructure and that includes all of the packages running testing
with %check after the rpm build phase.

This means that an rpm mass-rebuild is a proxy for *runtime* quality
and we use this proxy to determine impact.

We likewise use mpb yearly to asses gcc rebases into Fedora ahead of
integration to determine impact.

-- 
Cheers,
Carlos.