linux-kernel - Re: [PATCH 05/12] selftests/mm: fix invocation of tests that are run via shell scripts

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Date:   Fri, 2 Jun 2023 12:05:59 +0200
From:   David Hildenbrand <david@...hat.com>
To:     John Hubbard <jhubbard@...dia.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Peter Xu <peterx@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 05/12] selftests/mm: fix invocation of tests that are run
 via shell scripts

On 02.06.23 03:33, John Hubbard wrote:
> We cannot depend upon git to reliably retain the executable bit on shell
> scripts, or so I was told several years ago while working on this same
> run_vmtests.sh script. And sure enough, things such as test_hmm.sh are
> lately failing to run, due to lacking execute permissions.
> 
> A nice clean way to fix this would have been to use TEST_PROGS instead
> of TEST_FILES for the .sh scripts here. That tells the selftest
> framework to run these (and emit a warning if the files are not
> executable, but still run them anyway).
> 
> Unfortunately, run_vmtests.sh has its own run_test() routine, which does
> *not* do the right thing for shell scripts.
> 
> Fix this by explicitly adding "bash" to each of the shell script
> invocations. Leave fixing the overall approach to another day.
> 
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
> ---
>   tools/testing/selftests/mm/run_vmtests.sh | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh
> index 4893eb60d96d..8f81432e4bac 100644
> --- a/tools/testing/selftests/mm/run_vmtests.sh
> +++ b/tools/testing/selftests/mm/run_vmtests.sh
> @@ -242,18 +242,18 @@ if [ $VADDR64 -ne 0 ]; then
>   	if [ "$ARCH" == "$ARCH_ARM64" ]; then
>   		echo 6 > /proc/sys/vm/nr_hugepages
>   	fi
> -	CATEGORY="hugevm" run_test ./va_high_addr_switch.sh
> +	CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh
>   	if [ "$ARCH" == "$ARCH_ARM64" ]; then
>   		echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages
>   	fi
>   fi # VADDR64
>   
>   # vmalloc stability smoke test
> -CATEGORY="vmalloc" run_test ./test_vmalloc.sh smoke
> +CATEGORY="vmalloc" run_test bash ./test_vmalloc.sh smoke
>   
>   CATEGORY="mremap" run_test ./mremap_dontunmap
>   
> -CATEGORY="hmm" run_test ./test_hmm.sh smoke
> +CATEGORY="hmm" run_test bash ./test_hmm.sh smoke
>   
>   # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests
>   CATEGORY="madv_populate" run_test ./madv_populate

Sounds hacky, but if it gets the job done

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb