Fix double free issue in qemu_set_log_filename().

After freeing the logfilename, we set logfilename to NULL, in case of an
error which returns without setting logfilename.

Signed-off-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191118211528.3221-2-robert.foley@linaro.org>
(cherry picked from commit 0f516ca4767042aec8716369d6d62436fa10593a)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/util/log.c b/util/log.c
index 1ca13059eef5441dce01769e046d455acf52af3b..4316fe74eee8ba96fd2d3c9afd3bf8b60e9cd39e 100644 (file)
--- a/util/log.c
+++ b/util/log.c
@@ -113,6 +113,7 @@ void qemu_set_log_filename(const char *filename, Error **errp)
 {
     char *pidstr;
     g_free(logfilename);
+    logfilename = NULL;
 
     pidstr = strstr(filename, "%");
     if (pidstr) {