diff -uNr cryptsetup-2.0.3/lib/utils_loop.c cryptsetup-2.0.3.mod/lib/utils_loop.c
--- cryptsetup-2.0.3/lib/utils_loop.c	2018-02-28 11:20:59.000000000 +0200
+++ cryptsetup-2.0.3.mod/lib/utils_loop.c	2018-05-26 19:02:53.546906033 +0300
@@ -57,7 +57,7 @@
 	struct loop_info64 lo64 = {0};
 
 	for (i = 0; i < 256; i++) {
-		sprintf(dev, "/dev/loop%d", i);
+		sprintf(dev, "/dev/block/loop%d", i);
 
 		loop_fd = open(dev, O_RDONLY);
 		if (loop_fd < 0)
@@ -91,7 +91,7 @@
 	}
 	close(loop_fd);
 
-	if (sprintf(dev, "/dev/loop%d", i) < 0)
+	if (sprintf(dev, "/dev/block/loop%d", i) < 0)
 		return NULL;
 
 	if (stat(dev, &st) || !S_ISBLK(st.st_mode))
