linux-kernel - Re: [RFC] perf: Reconsider an error code selection in bpf_map_

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Date: Fri, 2 Feb 2024 07:48:12 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: linux-perf-users@...r.kernel.org, kernel-janitors@...r.kernel.org,
 Adrian Hunter <adrian.hunter@...el.com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>,
 Arnaldo Carvalho de Melo <acme@...nel.org>, Christy Lee <christylee@...com>,
 Daniel Borkmann <daniel@...earbox.net>, Ian Rogers <irogers@...gle.com>,
 Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>,
 Mark Rutland <mark.rutland@....com>, Martin KaFai Lau <kafai@...com>,
 Namhyung Kim <namhyung@...nel.org>, Peter Zijlstra <peterz@...radead.org>,
 Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
 YueHaibing <yuehaibing@...wei.com>, bpf@...r.kernel.org,
 netdev@...r.kernel.org
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] perf: Reconsider an error code selection in
 bpf_map__fprintf()

> A null pointer check is performed for the input parameter “map”.
> It looks suspicious that the function “PTR_ERR” is applied then for
> a corresponding return statement.

Are contributions also by YueHaibing still waiting on further development considerations?

[PATCH -next] perf: Fix pass 0 to PTR_ERR
https://lore.kernel.org/lkml/20220611040719.8160-1-yuehaibing@huawei.com/
https://lkml.org/lkml/2022/6/11/3


Regards,
Markus