Thread (50 messages) 50 messages, 3 authors, 2022-01-06

Re: [PATCH 02/20] perf env: fix sibling_dies memory leak

From: Riccardo Mancini <hidden>
Date: 2021-07-16 13:13:55
Also in: lkml

Hi Arnaldo,

thanks for reviewing this patchset and, more importantly, for manually adding
all Fixes: tags. I'm so sorry for that.

On Thu, 2021-07-15 at 16:49 -0300, Arnaldo Carvalho de Melo wrote:
Em Thu, Jul 15, 2021 at 06:07:07PM +0200, Riccardo Mancini escreveu:
quoted
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.
 
quoted
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 [off-list ref]
  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! I've added this nice script to my PATH. :)

Thanks,
Riccardo
Thanks, applied.

- Arnaldo
quoted
Signed-off-by: Riccardo Mancini <redacted>
---
 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
  
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