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perf dso: Fix memory leak in dso__new_map()

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[ Upstream commit 581e295a0f ]

ASan reports a memory leak when running:

  # perf test "65: maps__merge_in".

The causes of the leaks are two, this patch addresses only the first
one, which is related to dso__new_map().

The bug is that dso__new_map() creates a new dso but never decreases the
refcount it gets from creating it.

This patch adds the missing dso__put().

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Fixes: d3a7c489c7 ("perf tools: Reference count struct dso")
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/60bfe0cd06e89e2ca33646eb8468d7f5de2ee597.1626343282.git.rickyman7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Riccardo Mancini
2021-07-15 18:07:11 +02:00
committed by Greg Kroah-Hartman
parent c9c101da3e
commit b7bfd8aeb9
1 changed files with 3 additions and 1 deletions
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4
tools/perf/util/dso.c
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@@ -1141,8 +1141,10 @@ struct map *dso__new_map(const char *name)
struct map *map = NULL; struct map *map = NULL;
struct dso *dso = dso__new(name); struct dso *dso = dso__new(name);
if (dso) if (dso) {
map = map__new2(0, dso); map = map__new2(0, dso);
dso__put(dso);
}
return map; return map;
} }