From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: acme@kernel.org
Cc: suzuki.poulose@arm.com, mingo@redhat.com, peterz@infradead.org,
jolsa@redhat.com, leo.yan@linaro.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 05/13] perf tools: Fix memory leak in error path
Date: Tue, 12 Feb 2019 10:16:10 -0700 [thread overview]
Message-ID: <20190212171618.25355-6-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20190212171618.25355-1-mathieu.poirier@linaro.org>
Memory allocated for variable 't_params' isn't released properly in the
error path of function cs_etm_queue *cs_etm__alloc_queue() and
cs_etm__dump_event(), something this patch addresses.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
tools/perf/util/cs-etm.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 3011c6cae531..aac07f950074 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -175,6 +175,10 @@ static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
/* Use metadata to fill in trace parameters for trace decoder */
t_params = zalloc(sizeof(*t_params) * etm->num_cpu);
+
+ if (!t_params)
+ return;
+
for (i = 0; i < etm->num_cpu; i++) {
if (etm->metadata[i][CS_ETM_MAGIC] == __perf_cs_etmv3_magic) {
u32 etmidr = etm->metadata[i][CS_ETM_ETMIDR];
@@ -206,14 +210,12 @@ static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
/* Set decoder parameters to simply print the trace packets */
if (cs_etm__init_decoder_params(&d_params, NULL,
CS_ETM_OPERATION_PRINT))
- return;
+ goto out_free;
decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);
- zfree(&t_params);
-
if (!decoder)
- return;
+ goto out_free;
do {
size_t consumed;
@@ -228,6 +230,9 @@ static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
} while (buffer_used < buffer->size);
cs_etm_decoder__free(decoder);
+
+out_free:
+ zfree(&t_params);
}
static int cs_etm__flush_events(struct perf_session *session,
@@ -379,7 +384,7 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
{
int i;
struct cs_etm_decoder_params d_params;
- struct cs_etm_trace_params *t_params;
+ struct cs_etm_trace_params *t_params = NULL;
struct cs_etm_queue *etmq;
size_t szp = sizeof(struct cs_etm_packet);
@@ -461,8 +466,6 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
etmq->decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);
- zfree(&t_params);
-
if (!etmq->decoder)
goto out_free;
@@ -475,6 +478,8 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
cs_etm__mem_access))
goto out_free_decoder;
+ zfree(&t_params);
+
etmq->offset = 0;
etmq->period_instructions = 0;
@@ -483,6 +488,7 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
out_free_decoder:
cs_etm_decoder__free(etmq->decoder);
out_free:
+ zfree(&t_params);
zfree(&etmq->event_buf);
zfree(&etmq->last_branch);
zfree(&etmq->last_branch_rb);
--
2.17.1
next prev parent reply other threads:[~2019-02-12 17:16 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 17:16 [PATCH 00/13] perf tools: CoreSight code cleanup and refactoring Mathieu Poirier
2019-02-12 17:16 ` [PATCH 01/13] perf tools: Remove unused structure field "state" Mathieu Poirier
2019-02-15 9:39 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 02/13] perf tools: Remove unused structure field "time" and "timestamp" Mathieu Poirier
2019-02-15 9:40 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 03/13] perf tools: Fix wrong return values in error path Mathieu Poirier
2019-02-15 9:40 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 04/13] perf tools: Introducing function cs_etm_decoder__init_dparams() Mathieu Poirier
2019-02-15 9:41 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` Mathieu Poirier [this message]
2019-02-15 9:42 ` [tip:perf/core] perf cs-etm: Fix memory leak in error path tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 06/13] perf tools: Introducing function cs_etm__init_trace_params() Mathieu Poirier
2019-02-15 9:42 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 07/13] perf tools: Fix erroneous comment Mathieu Poirier
2019-02-15 9:43 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 08/13] perf tools: Cleaning up function cs_etm__alloc_queue() Mathieu Poirier
2019-02-15 9:43 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 09/13] perf tools: Rethink kernel address initialisation Mathieu Poirier
2019-02-15 9:44 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 10/13] perf tools: Make cs_etm__run_decoder() queue independent Mathieu Poirier
2019-02-15 9:45 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 11/13] perf tools: Modularize main decoder function Mathieu Poirier
2019-02-15 9:45 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 12/13] perf tools: Modularize main packet processing loop Mathieu Poirier
2019-02-15 9:46 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
2019-02-12 17:16 ` [PATCH 13/13] perf tools: Modularize auxtrace_buffer fetch function Mathieu Poirier
2019-02-15 9:47 ` [tip:perf/core] perf cs-etm: " tip-bot for Mathieu Poirier
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