linux-kernel - [tip:perf/core] perf probe: Fix get_real_path to free allocated memory in error path

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Message-ID: <tip-eb47cb2eb22dfacac9689708f5bd3cb0e975e290@git.kernel.org>
Date:	Sat, 28 Feb 2015 01:31:08 -0800
From:	tip-bot for Masami Hiramatsu <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, masami.hiramatsu.pt@...achi.com,
	mingo@...nel.org, naota@...sp.net, tglx@...utronix.de,
	acme@...hat.com, peterz@...radead.org, hpa@...or.com,
	namhyung@...nel.org
Subject: [tip:perf/core] perf probe:
  Fix get_real_path to free allocated memory in error path

Commit-ID:  eb47cb2eb22dfacac9689708f5bd3cb0e975e290
Gitweb:     http://git.kernel.org/tip/eb47cb2eb22dfacac9689708f5bd3cb0e975e290
Author:     Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
AuthorDate: Thu, 26 Feb 2015 17:25:04 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 26 Feb 2015 11:59:05 -0300

perf probe: Fix get_real_path to free allocated memory in error path

Fix get_real_path to free allocated memory when comp_dir is used for
complementing path and getting an error.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Naohiro Aota <naota@...sp.net>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20150226082504.28125.74506.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/probe-event.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 662d454..4a93bf4 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -549,9 +549,11 @@ static int get_real_path(const char *raw_path, const char *comp_dir,
 		if (access(*new_path, R_OK) == 0)
 			return 0;
 
-		if (!symbol_conf.source_prefix)
+		if (!symbol_conf.source_prefix) {
 			/* In case of searching comp_dir, don't retry */
+			zfree(new_path);
 			return -errno;
+		}
 
 		switch (errno) {
 		case ENAMETOOLONG:
--
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