pxe: Fix crash if 'sysboot' is run without args

Previously, a NULL pointer dereference would occur if the 'sysboot' command is executed without any arguments. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Reviewed-by: Simon Glass <sjg@chromium.org>

pxe: Fix crash if 'sysboot' is run without args
Previously, a NULL pointer dereference would occur if the 'sysboot' command is executed without any arguments. Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Reviewed-by: Simon Glass <sjg@chromium.org>
Tuomas Tynkkynen · Tom Rini
1 parent 445614cc2f
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
common/cmd_pxe.c
@@ -1648,7 +1648,7 @@
  
 	is_pxe = false;
  
-	if (strstr(argv[1], "-p")) {
+	if (argc > 1 && strstr(argv[1], "-p")) {
 		prompt = 1;
 		argc--;
 		argv++;
...	...	@@ -1648,7 +1648,7 @@
1648	1648
1649	1649	is_pxe = false;
1650	1650
1651		- if (strstr(argv[1], "-p")) {
	1651	+ if (argc > 1 && strstr(argv[1], "-p")) {
1652	1652	prompt = 1;
1653	1653	argc--;
1654	1654	argv++;