linux-kernel - [PATCH v1 1/2] perf disasm: Fix memory leak for locked operations

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Message-Id: <20240813040613.882075-1-irogers@google.com>
Date: Mon, 12 Aug 2024 21:06:12 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Thomas Richter <tmricht@...ux.ibm.com>, 
	Kajol Jain <kjain@...ux.ibm.com>, Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] perf disasm: Fix memory leak for locked operations

lock__parse calls disasm_line__parse passing
&ops->locked.ins.name. Ensure ops->locked.ins.name is freed in
lock__delete.

Found with lock/leak sanitizer.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/disasm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c
index 22289003e16d..226d2181f694 100644
--- a/tools/perf/util/disasm.c
+++ b/tools/perf/util/disasm.c
@@ -566,6 +566,7 @@ static void lock__delete(struct ins_operands *ops)
 		ins_ops__delete(ops->locked.ops);
 
 	zfree(&ops->locked.ops);
+	zfree(&ops->locked.ins.name);
 	zfree(&ops->target.raw);
 	zfree(&ops->target.name);
 }
-- 
2.46.0.76.ge559c4bf1a-goog