linux-kernel - Re: [PATCH] selftests/mm: on-fault-limit: run test without root privileges otherwise skip

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date: Thu, 1 Feb 2024 17:32:44 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Andrew Morton <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>, kernel@...labora.com,
 linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/mm: on-fault-limit: run test without root
 privileges otherwise skip

Please disregard this patch. I'll send another patch to fix another thing.

On 2/1/24 12:13 PM, Muhammad Usama Anjum wrote:
> The mmap() respects rlimit only for normal users. This test should be
> run as normal user, without root privileges.
> 
> Fixes: b6221771d468 ("selftests/mm: run_vmtests: remove sudo and conform to tap")
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
> ---
>  tools/testing/selftests/mm/on-fault-limit.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/on-fault-limit.c b/tools/testing/selftests/mm/on-fault-limit.c
> index 0ea98ffab3589..431c1277d83a1 100644
> --- a/tools/testing/selftests/mm/on-fault-limit.c
> +++ b/tools/testing/selftests/mm/on-fault-limit.c
> @@ -21,7 +21,7 @@ static void test_limit(void)
>  	map = mmap(NULL, 2 * lims.rlim_max, PROT_READ | PROT_WRITE,
>  		   MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
>  
> -	ksft_test_result(map == MAP_FAILED, "Failed mmap\n");
> +	ksft_test_result(map == MAP_FAILED, "The map failed respecting mlock limits\n");
>  
>  	if (map != MAP_FAILED)
>  		munmap(map, 2 * lims.rlim_max);
> @@ -33,8 +33,8 @@ int main(int argc, char **argv)
>  	ksft_print_header();
>  	ksft_set_plan(1);
>  
> -	if (getuid())
> -		ksft_test_result_skip("Require root privileges to run\n");
> +	if (!getuid())
> +		ksft_test_result_skip("The test must be run from a normal user\n");
>  	else
>  		test_limit();
>  

-- 
BR,
Muhammad Usama Anjum