linux-kernel - Re: [PATCH] selftests: cgroup: Add 'malloc' failures checks in test

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Message-Id: <8C12D50C-97D1-4969-9D02-290B1AB56C72@linux.dev>
Date:   Mon, 27 Feb 2023 15:11:54 +0800
From:   Muchun Song <muchun.song@...ux.dev>
To:     Ivan Orlov <ivan.orlov0322@...il.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>, Tejun Heo <tj@...nel.org>,
        lizefan.x@...edance.com, shuah@...nel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, skhan@...uxfoundation.org
Subject: Re: [PATCH] selftests: cgroup: Add 'malloc' failures checks in
 test_memcontrol



> On Feb 26, 2023, at 21:16, Ivan Orlov <ivan.orlov0322@...il.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@...il.com>

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

Thanks.