Index: uspace/lib/ext4/libext4_filesystem.c
===================================================================
--- uspace/lib/ext4/libext4_filesystem.c	(revision f73b2913a9facbac5079836f6c5bee2148010a56)
+++ uspace/lib/ext4/libext4_filesystem.c	(revision d6cd626db59cf8f2784e8800dfdb1dd6e8d2e5ca)
@@ -1284,4 +1284,9 @@
 	block_t *block;
 	while (level > 0) {
+		
+		/* Sparse check */
+		if (current_block == 0)
+			return EOK;
+		
 		int rc = block_get(&block, fs->device, current_block, 0);
 		if (rc != EOK)