linux-kernel - Re: [PATCH 02/20] perf env: fix sibling

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]

Date:   Thu, 15 Jul 2021 16:49:27 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Riccardo Mancini <rickyman7@...il.com>
Cc:     Kan Liang <kan.liang@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 02/20] perf env: fix sibling_dies memory leak

Em Thu, Jul 15, 2021 at 06:07:07PM +0200, Riccardo Mancini escreveu:
> ASan reports a memory leak in perf_env while running the perf test
> "41: Session topology", caused by sibling_dies not being freed.
> 
> This patch adds the required free.
 
> Fixes: acae8b36cded0ee6 ("perf header: Add die information in CPU topology")

So, I CC the author of the patch and its committer, using this shell
script:

  $ cat ~/bin/fixes
  #!/bin/bash
  
  cset=$1
  if [ $# -eq 0 ] ; then
  	read cset
  fi
  git show --pretty=fuller $cset | grep '^\(Author\|Commit\): ' | sed -r 's/.*: +/Cc: /g' | grep -v "Arnaldo Carvalho de Melo" | sort -u
  echo Fixes: `git one $cset`
  $
  $ grep one -B1 ~/.gitconfig
  [alias]
	one = show -s --pretty='format:%h (\"%s\")'
  $
  $ fixes acae8b36cded0ee6
  Cc: Kan Liang <kan.liang@...ux.intel.com>
  Fixes: acae8b36cded0ee6 ("perf header: Add die information in CPU topology")
  $

Normally I copy the cset SHA and, in vim, select it and run !fixes, i.e.

:'<,'>!fixes

Thanks, applied.

- Arnaldo

> Signed-off-by: Riccardo Mancini <rickyman7@...il.com>
> ---
>  tools/perf/util/env.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
> index ebc5e9ad35db21d1..6c765946ef6f591c 100644
> --- a/tools/perf/util/env.c
> +++ b/tools/perf/util/env.c
> @@ -186,6 +186,7 @@ void perf_env__exit(struct perf_env *env)
>  	zfree(&env->cpuid);
>  	zfree(&env->cmdline);
>  	zfree(&env->cmdline_argv);
> +	zfree(&env->sibling_dies);
>  	zfree(&env->sibling_cores);
>  	zfree(&env->sibling_threads);
>  	zfree(&env->pmu_mappings);
> -- 
> 2.31.1
> 

-- 

- Arnaldo