linux-kernel - Re: [PATCH bpf-next 4/4] selftests/bpf: Add a null pointer check for the serial_test_tp_attach

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Message-ID: <bf6e727e-a28c-4605-8a47-ac33550ebb10@web.de>
Date: Wed, 24 Apr 2024 12:48:53 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Kunwu Chan <chentao@...inos.cn>, bpf@...r.kernel.org,
 linux-kselftest@...r.kernel.org, kernel-janitors@...r.kernel.org,
 Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>, Eduard Zingerman
 <eddyz87@...il.com>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, John Fastabend <john.fastabend@...il.com>,
 KP Singh <kpsingh@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>,
 Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>,
 Song Liu <song@...nel.org>, Stanislav Fomichev <sdf@...gle.com>,
 Yonghong Song <yonghong.song@...ux.dev>
Cc: LKML <linux-kernel@...r.kernel.org>, Kunwu Chan <kunwu.chan@...mail.com>
Subject: Re: [PATCH bpf-next 4/4] selftests/bpf: Add a null pointer check for
 the serial_test_tp_attach_query

…
> Add the malloc failure checking to avoid possible null
> dereference.
…

How do you think about to use the following wording variant?

   Add a return value check so that a null pointer dereference will be avoided
   after a memory allocation failure.


Would you like to add the tag “Fixes” accordingly?

Regards,
Markus