linux-kernel - Re: 'perf stat --null sleep 1' segfault related to evlist__for_each

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Message-ID: <YjJGH8Fzb7Bb22Pt@kernel.org>
Date:   Wed, 16 Mar 2022 17:18:39 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 'perf stat --null sleep 1' segfault related to
 evlist__for_each_entry with affinity == NULL

Em Wed, Mar 16, 2022 at 12:14:12AM -0700, Ian Rogers escreveu:
> On Tue, Mar 15, 2022 at 5:50 AM Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> > And was dormant as the affinity was being always setup, which we don't
> > want when it isn't needed.
> 
> Thanks for the detailed report, I sent a fix in:
> https://lore.kernel.org/lkml/20220316071049.2368250-1-irogers@google.com/
> Any thoughts for a shell test to avoid this regressing again in the future?

Thanks for providing me with the Message-ID, that way I'll be able to
get that patch since I wasn't on the CC list for it, I'll also add a
Reported-by tag.

- Arnaldo