TESTS more writesame1* test fixes

test-tool/test_writesame16_unmap_vpd.c

@@ -16,6 +16,7 @@
 */
 
 #include <stdio.h>
+#include <alloca.h>
 
 #include <CUnit/CUnit.h>
 
@@ -29,6 +30,7 @@ void
 test_writesame16_unmap_vpd(void)
 {
 	int ret;
+	unsigned char *buf = alloca(block_size);
 
 	logging(LOG_VERBOSE, LOG_BLANK_LINE);
 	logging(LOG_VERBOSE, "Test WRITESAME16 UNMAP availability is "
@@ -40,9 +42,10 @@ test_writesame16_unmap_vpd(void)
 	logging(LOG_VERBOSE, "Check if WRITESAME16 can be used for UNMAP.");
 
 	logging(LOG_VERBOSE, "Unmap 1 block using WRITESAME16");
+	memset(buf, 0, block_size);
 	ret = writesame16(iscsic, tgt_lun, 0,
 			  block_size, 1,
-			  0, 1, 0, 0, NULL);
+			  0, 1, 0, 0, buf);
 
 	if (ret != 0) {
 		logging(LOG_VERBOSE, "WRITESAME16 UNMAP is not available. "