Re: [PATCH v3 7/8] selftests/mm: refactor uffd_poll_thread to allow custom fault handlers

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On Thu, Jul 06, 2023 at 03:50:35PM -0700, Axel Rasmussen wrote:
> @@ -247,9 +245,13 @@ static int userfaultfd_stress(void)
>  {
>  	void *area;
>  	unsigned long nr;
> -	struct uffd_args args[nr_cpus];
> +	struct uffd_args *args;
>  	uint64_t mem_size = nr_pages * page_size;
>  
> +	args = calloc(nr_cpus, sizeof(struct uffd_args));
> +	if (!args)
> +		err("allocating args array failed");

This is trivial, but I think I requested a "free" (or keep it allocate on
stack) in previous version but it didn't get a response on why we cannot
and it kept going..  could you help explain?

-- 
Peter Xu




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