diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index f073630dd..656780927 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -1824,17 +1824,18 @@ static vdisk_op_fn nullio_ops[256] = {
 	SHARED_OPS
 };
 
+#define VDISK_OPCODE_DESCRIPTORS					\
+	/* &scst_op_descr_get_lba_status, */				\
+	&scst_op_descr_read_capacity16,					\
+	&scst_op_descr_write_same10,					\
+	&scst_op_descr_write_same16,					\
+	&scst_op_descr_unmap,						\
+	&scst_op_descr_format_unit,					\
+	&scst_op_descr_cwr,
+
 static const struct scst_opcode_descriptor *vdisk_opcode_descriptors[] = {
 	SHARED_OPCODE_DESCRIPTORS
-#if 0 /* it's INVALID OPCODE currently */
-	&scst_op_descr_get_lba_status,
-#endif
-	&scst_op_descr_read_capacity16,
-	&scst_op_descr_write_same10,
-	&scst_op_descr_write_same16,
-	&scst_op_descr_unmap,
-	&scst_op_descr_format_unit,
-	&scst_op_descr_cwr,
+	VDISK_OPCODE_DESCRIPTORS
 	SCST_OPCODE_DESCRIPTORS
 };
 
diff --git a/scst/src/scst_targ.c b/scst/src/scst_targ.c
index 2f824abeb..9090509d7 100644
--- a/scst/src/scst_targ.c
+++ b/scst/src/scst_targ.c
@@ -2229,7 +2229,7 @@ static int scst_report_supported_opcodes(struct scst_cmd *cmd)
 		buf = address;
 		inline_buf = true;
 	} else {
-		buf = vzalloc(buf_len); /* it can be big */
+		buf = vmalloc(buf_len); /* it can be big */
 		if (buf == NULL) {
 			PRINT_ERROR("Unable to allocate REPORT SUPPORTED "
 				"OPERATION CODES buffer with size %d", buf_len);
@@ -2239,7 +2239,7 @@ static int scst_report_supported_opcodes(struct scst_cmd *cmd)
 		inline_buf = false;
 	}
 
-	memset(buf, 0, sizeof(buf));
+	memset(buf, 0, buf_len);
 
 	switch(options) {
 	case 0: /* all */