From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752047AbdIMTOh (ORCPT ); Wed, 13 Sep 2017 15:14:37 -0400 Received: from mout02.posteo.de ([185.67.36.66]:42100 "EHLO mout02.posteo.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751444AbdIMTOg (ORCPT ); Wed, 13 Sep 2017 15:14:36 -0400 From: Martin Kepplinger To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org, alexander.shishkin@linux.intel.com Cc: linux-kernel@vger.kernel.org, Martin Kepplinger Subject: [PATCH] tools: perf: fix leaking rec_argv in error cases Date: Wed, 13 Sep 2017 21:14:19 +0200 Message-Id: <20170913191419.29806-1-martink@posteo.de> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Let's free the allocated rec_argv in case we return early, in order to avoid leaking memory. This adds free() at a few very similar places across the tree where it was missing. Signed-off-by: Martin Kepplinger --- tools/perf/builtin-c2c.c | 1 + tools/perf/builtin-mem.c | 1 + tools/perf/builtin-timechart.c | 4 +++- tools/perf/builtin-trace.c | 1 + 4 files changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 475999e48f66..bb1ee22bd221 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -2732,6 +2732,7 @@ static int perf_c2c__record(int argc, const char **argv) if (!perf_mem_events[j].supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events[j].name); + free(rec_argv); return -1; } diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 0f15634ef82c..6940490bc3f9 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -112,6 +112,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) if (!perf_mem_events[j].supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events__name(j)); + free(rec_argv); return -1; } diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 4e2e61695986..01de01ca14f2 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1732,8 +1732,10 @@ static int timechart__io_record(int argc, const char **argv) if (rec_argv == NULL) return -ENOMEM; - if (asprintf(&filter, "common_pid != %d", getpid()) < 0) + if (asprintf(&filter, "common_pid != %d", getpid()) < 0) { + free(rec_argv); return -ENOMEM; + } p = rec_argv; for (i = 0; i < common_args_nr; i++) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 771ddab94bb0..dd8eec4c755c 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2078,6 +2078,7 @@ static int trace__record(struct trace *trace, int argc, const char **argv) rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit"; else { pr_err("Neither raw_syscalls nor syscalls events exist.\n"); + free(rec_argv); return -1; } } -- 2.11.0