Powertop crashes with 'powertop --auto-tune'

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Hash: SHA256

Please see the following patch to address the reported crash
- ---
- From e994a414f619410877023fce35ade12d1cfce68d Mon Sep 17 00:00:00 2001
From: Michael Mullin <masmullin@hush.com>
Date: Thu, 22 Jan 2015 16:33:31 -0500
Subject: [PATCH] If "dir" is closed early inside create_add_devfreq_devices()
 then there is a potential double free due to a second close during the
 cleanup phase in clear_all_devfreq()

Signed-off-by: Michael Mullin <masmullin@hush.com>

- ---
 src/devices/devfreq.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

1 files changed, 4 insertions, 1 deletions

diff --git a/src/devices/devfreq.cpp b/src/devices/devfreq.cpp
index d2e56e3..f652a57 100644
--- a/src/devices/devfreq.cpp
+++ b/src/devices/devfreq.cpp
@@ -247,6 +247,7 @@ void create_all_devfreq_devices(void)
 		fprintf(stderr, "Devfreq not enabled\n");
 		is_enabled = false;
 		closedir(dir);
+		dir = NULL;
 		return;
 	}
 
@@ -327,6 +328,8 @@ void clear_all_devfreq()
 	}
 	all_devfreq.clear();
 	/* close /sys/class/devfreq */
-	if (dir != NULL)
+	if (dir != NULL) {
 		closedir(dir);
+		dir = NULL;
+	}
 }