Index: uspace/srv/bd/hr/raid0.c
===================================================================
--- uspace/srv/bd/hr/raid0.c	(revision 23df41bf64b8d1ae27e3d8f487225995d26bffc8)
+++ uspace/srv/bd/hr/raid0.c	(revision a6fb9376fa4eccaea6516946b1349c09335ef310)
@@ -243,4 +243,6 @@
 		hr_fgroup_t *group = hr_fgroup_create(vol->fge,
 		    vol->extent_no);
+		if (group == NULL)
+			return ENOMEM;
 
 		for (size_t i = 0; i < vol->extent_no; i++) {
@@ -288,4 +290,6 @@
 
 	hr_fgroup_t *group = hr_fgroup_create(vol->fge, span);
+	if (group == NULL)
+		return ENOMEM;
 
 	while (left != 0) {