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Subject: Re: [PATCH] selftests: cgroup: Add 'malloc' failures checks in
 test_memcontrol
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From:   Muchun Song <muchun.song@linux.dev>
In-Reply-To: <20230226131634.34366-1-ivan.orlov0322@gmail.com>
Date:   Mon, 27 Feb 2023 15:11:54 +0800
Cc:     Johannes Weiner <hannes@cmpxchg.org>,
        Michal Hocko <mhocko@kernel.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Shakeel Butt <shakeelb@google.com>, Tejun Heo <tj@kernel.org>,
        lizefan.x@bytedance.com, shuah@kernel.org, cgroups@vger.kernel.org,
        linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
        linux-kernel@vger.kernel.org, skhan@linuxfoundation.org
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To:     Ivan Orlov <ivan.orlov0322@gmail.com>
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> On Feb 26, 2023, at 21:16, Ivan Orlov <ivan.orlov0322@gmail.com> wrote:
> 
> There are several 'malloc' calls in test_memcontrol, which can be
> unsuccessful. This patch will add 'malloc' failures checking to
> give more details about test's fail reasons and avoid possible
> undefined behavior during the future null dereference (like the
> one in alloc_anon_50M_check_swap function).
> 
> Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>

Reviewed-by: Muchun Song <songmuchun@bytedance.com>

Thanks.