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

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Message-ID: <20150226144633.GD1079@kernel.org>
Date:	Thu, 26 Feb 2015 11:46:33 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Peter Zijlstra <peterz@...radead.org>, namhyung@...nel.org,
	Naohiro Aota <naota@...sp.net>, Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH perf/core ] [BUGFIX] perf-probe: Fix get_real_path to
 free allocated memory in error path

Em Thu, Feb 26, 2015 at 05:25:04PM +0900, Masami Hiramatsu escreveu:
> Fix get_real_path to free allocated memory when comp_dir
> is used for complementing path and getting an error.


While reviewing this patch I noticed this is needed, ack?

- Arnaldo


diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 4a93bf433344..9526cf37682e 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -533,7 +533,7 @@ static int get_real_path(const char *raw_path, const char *comp_dir,
 		else {
 			if (access(raw_path, R_OK) == 0) {
 				*new_path = strdup(raw_path);
-				return 0;
+				return *new_path ? 0 : -ENOMEM;
 			} else
 				return -errno;
 		}
--
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