--- samba-4.13.2/source3/modules/vfs_virusfilter_utils.c.orig	2020-07-09 11:33:56.000000000 +0200
+++ samba-4.13.2/source3/modules/vfs_virusfilter_utils.c	2020-12-03 19:40:44.137740873 +0100
@@ -583,6 +583,7 @@
 		 */
 		pending = tstream_pending_bytes(io_h->stream);
 		if (pending < 0) {
+			ok = false;
 			DBG_ERR("tstream_pending_bytes failed (%s).\n",
 				strerror(errno));
 			goto finish;
@@ -597,6 +598,7 @@
 				(sizeof(io_h->r_buffer) - io_h->r_len));
 
 		if (read_size == 0) {
+			ok = false;
 			/* Buffer is full with no EOL. Error out. */
 			DBG_ERR("Line buffer full.\n");
 			goto finish;
@@ -612,6 +614,7 @@
 					&iov,
 					1);
 		if (req == NULL) {
+			ok = false;
 			DBG_ERR("out of memory.\n");
 			goto finish;
 		}
@@ -642,6 +645,7 @@
 		 * EPIPE may be success so, don't exit.
 		 */
 		if (*perror != 0 && *perror != EPIPE) {
+			ok = false;
 			DBG_DEBUG("Error %s\n", strerror((int)*perror));
 			errno = (int)*perror;
 			goto finish;