svn commit: r356184 - head/usr.sbin/powerd

[Mark Johnston]

Author: markj
Date: Sun Dec 29 20:57:49 2019
New Revision: 356184
URL: https://svnweb.freebsd.org/changeset/base/356184

Log:
  powerd(8): Fix a memory leak when we fail to read frequency levels.
  
  PR:		242967
  Submitted by:	Hans Christian Woithe <chwoithe at yahoo.com>
  MFC after:	3 days

Modified:
  head/usr.sbin/powerd/powerd.c

Modified: head/usr.sbin/powerd/powerd.c
==============================================================================
--- head/usr.sbin/powerd/powerd.c	Sun Dec 29 20:01:03 2019	(r356183)
+++ head/usr.sbin/powerd/powerd.c	Sun Dec 29 20:57:49 2019	(r356184)
@@ -196,8 +196,10 @@ read_freqs(int *numfreqs, int **freqs, int **power, in
 		return (-1);
 	if ((freqstr = malloc(len)) == NULL)
 		return (-1);
-	if (sysctl(levels_mib, 4, freqstr, &len, NULL, 0))
+	if (sysctl(levels_mib, 4, freqstr, &len, NULL, 0)) {
+		free(freqstr);
 		return (-1);
+	}
 
 	*numfreqs = 1;
 	for (p = freqstr; *p != '\0'; p++)