[PATCH v2 3/3] Linux: Add tests that check that TLS and rseq area are separate

[Florian Weimer]

* Michael Jeanson:

> On 2025-01-13 07:33, Florian Weimer wrote:
>> +static void
>> +add_rseq (void)
>> +{
>> +  if (__rseq_size > 0)
>> +    add_range ("", "rseq area",
>> +               (char *) __thread_pointer () + __rseq_offset, __rseq_size);
>> +}
>
> Since there is always an rseq area of at least RSEQ_AREA_SIZE_INITIAL
> (32 bytes) allocated even when rseq is disabled, we should always add
> the range to the test, something like that :
>
>  +static void
>  +add_rseq (void)
>  +{
>  +  add_range ("", "rseq area", (char *) __thread_pointer () + __rseq_offset,
>  +  	MAX (__rseq_size, RSEQ_AREA_SIZE_INITIAL));
>  +}

Or perhaps round up the size to a multiple of 32?

Thanks,
Florian