Re: [PATCH v2] perf test amd ibs: avoid using executable heap

[Namhyung Kim]

On Wed, 01 Jul 2026 08:23:21 +0200, Ondrej Mosnacek wrote:
> Making [parts of] the heap executable is dangerous and is blocked by
> SELinux on Fedora/RHEL even for an unconfined user. Replace the malloc()
> + mprotect() combo with just mmap(), creating a private anonymous rwx
> mapping, which only requires the more commonly allowed "execmem"
> permission under SELinux (things like JIT or regex compilation need it
> as well). mmap() with MAP_ANONYMOUS will give us a zeroed mapping that
> begins on a page boundary, so the result is equivalent to the original
> code even without a memset() or the page-alignment dance.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung