[PATCH v16 6/8] nptl: Move the rseq area to the 'extra TLS' block

[Michael Jeanson]

On 2025-01-16 11:43, Michael Jeanson wrote:
> Oh, I missed the failure on line 90. So re-reading the log, the main
> thread registration works then fails to unregister, the second main thread
> registration then fails with EBUSY since the previous registration is still
> active. Same thing happens in the secondary thread.
> 
>>
>>>
>>> Do you also see this failure on a released kernel?
>> No, I have not seen this fail before. Only on kernel-next (but no idea
>> when it started to fail there).
>>
>> Any ideas how to track it down?
> 
> Can you check what is the value of errno after the failed unregistration?
> 
> I'll have a look at linux-next and check if I can reprod on another
> architecture.

Also, does your kernel config sets "CONFIG_DEBUG_RSEQ=y"? And anything
in dmesg?