linux-kernel - Re: [PATCH] selftests/mm:fix test_prctl_fork

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Message-ID: <3f5ad53c-f473-469a-a834-afb9b069cb13@redhat.com>
Date: Mon, 17 Jun 2024 10:01:44 +0200
From: David Hildenbrand <david@...hat.com>
To: aigourensheng <shechenglong001@...il.com>, akpm@...ux-foundation.org
Cc: shuah@...nel.org, linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/mm:fix test_prctl_fork_exec return failure

On 17.06.24 07:29, aigourensheng wrote:
> after calling fork() in the test_prctl_fork_exec() function,
> the global variable ksm_full_scans_fd is initialized to 0
> in the child process upon entering the main function
> of ./ksm_functional_tests.
> In the function call chain test_child_ksm() ->
> __mmap_and_merge_range -> ksm_merge-> ksm_get_full_scans,
> start_scans = ksm_get_full_scans() will return an error.
> Therefore, the value of ksm_full_scans_fd needs to be
> initialized before calling test_child_ksm in the child process.
> 
> Signed-off-by: aigourensheng <shechenglong001@...il.com>
> ---

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

-- 
Cheers,

David / dhildenb