[LTP] [PATCH v1] hugemmap34: Disable -fstack-clash-protection

[Jan Stancek]

On Thu, Feb 6, 2025 at 3:23 AM Wei Gao <wegao@suse.com> wrote:
>
> Signed-off-by: Wei Gao <wegao@suse.com>
> Suggested-by: Jan Stancek <jstancek@redhat.com>
>
> Compiling hugemmap34 with CFLAGS='-fstack-clash-protection' causes
> gcc to insert additional stack address validation checks during
> alloca calls.  This results in kernel start allocate memory really,
> eventually triggering an OOM.
>
> Base Jan's suggestion, disable -fstack-clash-protection to allows
> test to run on larger pool of systems
>
> Signed-off-by: Wei Gao <wegao@suse.com>

Pushed with small tweaks to commit message.

Thanks,
Jan

> ---
>  testcases/kernel/mem/hugetlb/hugemmap/Makefile | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/testcases/kernel/mem/hugetlb/hugemmap/Makefile b/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> index 2d651b4aa..6e72e7009 100644
> --- a/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> +++ b/testcases/kernel/mem/hugetlb/hugemmap/Makefile
> @@ -8,4 +8,7 @@ include $(top_srcdir)/include/mk/testcases.mk
>  include $(abs_srcdir)/../Makefile.inc
>  include $(top_srcdir)/include/mk/generic_leaf_target.mk
>
> +CFLAGS_no_stack_prot := $(filter-out -fstack-clash-protection, $(CFLAGS))
> +
>  hugemmap06: CFLAGS+=-pthread
> +hugemmap34: CFLAGS=$(CFLAGS_no_stack_prot)
> --
> 2.35.3
>