linux-kernel - Re: [PATCH v1 1/2] perf metrics: Avoid segv if default metricgroup isn't set

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZW8/mWUuctdg/8fE@kernel.org>
Date:   Tue, 5 Dec 2023 12:19:53 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ilkka Koskinen <ilkka@...amperecomputing.com>
Cc:     Ian Rogers <irogers@...gle.com>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] perf metrics: Avoid segv if default metricgroup
 isn't set

Em Mon, Dec 04, 2023 at 02:44:54PM -0800, Ilkka Koskinen escreveu:
> 
> 
> On Mon, 4 Dec 2023, Ian Rogers wrote:
> > A metric is default by having "Default" within its groups. The default
> > metricgroup name needn't be set and this can result in segv in
> > default_metricgroup_cmp and perf_stat__print_shadow_stats_metricgroup
> > that assume it has a value when there is a Default metric group. To
> > avoid the segv initialize the value to "".
> > 
> > Fixes: 1c0e47956a8e ("perf metrics: Sort the Default metricgroup")
> > Signed-off-by: Ian Rogers <irogers@...gle.com>
> 
> Thanks! I was going to look for the bug but got pulled to other tasks. The
> patch looks good to me and I tested it successfully on AmpereOne.
> 
>   Reviewed-and-tested-by: Ilkka Koskinen <ilkka@...amperecomputing.com>

Thanks, applied to perf-tools-next.

- Arnaldo