Don't dereference NULL.
Signed-off-by: Wei Liu <wei.l...@citrix.com>
---
tools/libxl/xl_cmdimpl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index d44eb4b..631dbd1 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -5010,7 +5010,7 @@ int main_config_update(int argc, char **argv)
if (rc) { fprintf(stderr, "Failed to read config file: %s: %s\n",
filename, strerror(errno));
free(extra_config); return ERROR_FAIL; }
- if (strlen(extra_config)) {
+ if (extra_config && strlen(extra_config)) {
if (config_len > INT_MAX - (strlen(extra_config) + 2 + 1)) {
fprintf(stderr, "Failed to attach extra configration\n");
exit(1);
--
1.9.1
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
