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perf evlist: Fix for double free in tools/perf stat 

Fix for double free bug in tools/perf due to dangling thread_map pointer
in perf_evlist struct.

Code path excercised when perf stat -C switch is used but not set and is
followed by another switch.

Example:

  perf stat -C -e.

Signed-off-by: Yasser Shalabi <yassershalabi@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1412437077-13109-1-git-send-email-yassershalabi@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Yasser Shalabi 2014-10-04 11:37:57 -04:00 committed by Arnaldo Carvalho de Melo
parent ffe59788e6
commit b2e19a934a
1 changed files with 1 additions and 0 deletions
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1
tools/perf/util/evlist.c
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@ -1003,6 +1003,7 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
out_delete_threads:
thread_map__delete(evlist->threads);
evlist->threads = NULL;
return -1;
}