From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Andi Kleen <ak@linux.intel.com>,
linux-kernel@vger.kernel.org
Cc: Stephane Eranian <eranian@google.com>, Ian Rogers <irogers@google.com>
Subject: [PATCH] perf tools: address 2 parse event memory leaks
Date: Fri, 8 Nov 2019 23:58:40 -0800 [thread overview]
Message-ID: <20191109075840.181231-1-irogers@google.com> (raw)
Using return rather than YYABORT means that the stack isn't cleared up
following a failure. The change to YYABORT means the return value is 1
rather than -1, but the callers just check for a result of 0 (success).
Add missing free of a list when an error occurs in event_pmu.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/parse-events.y | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 4cac830015be..e2eea4e601b4 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -284,6 +284,7 @@ PE_NAME opt_pmu_config
do { \
parse_events_terms__delete($2); \
parse_events_terms__delete(orig_terms); \
+ free(list); \
free($1); \
free(pattern); \
YYABORT; \
@@ -550,7 +551,7 @@ tracepoint_name opt_event_config
free($1.event);
if (err) {
free(list);
- return -1;
+ YYABORT;
}
$$ = list;
}
--
2.24.0.432.g9d3f5f5b63-goog
next reply other threads:[~2019-11-09 7:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-09 7:58 Ian Rogers [this message]
2019-11-11 14:13 ` [PATCH] perf tools: address 2 parse event memory leaks Arnaldo Carvalho de Melo
2019-11-15 7:40 ` [tip: perf/core] perf parse: Use YYABORT to clear stack after failure, plugging leaks tip-bot2 for Ian Rogers
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