--- btrfs-progs-v0.19-118-gfdb6c04.orig/btrfs-image.c
+++ btrfs-progs-v0.19-118-gfdb6c04/btrfs-image.c
@@ -491,6 +491,11 @@ static int create_metadump(const char *i
 	int ret;
 
 	root = open_ctree(input, 0, 0);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
+
 	BUG_ON(root->nodesize != root->leafsize);
 
 	ret = metadump_init(&metadump, root, out, num_threads,
--- btrfs-progs-v0.19-118-gfdb6c04.orig/btrfs-select-super.c
+++ btrfs-progs-v0.19-118-gfdb6c04/btrfs-select-super.c
@@ -100,8 +100,10 @@ int main(int ac, char **av)
 	}
 	root = open_ctree_fd(fp, av[optind], bytenr, 1, use_earliest_bdev);
 
-	if (root == NULL)
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
 		return 1;
+	}
 
 	fprintf(stderr, "Found superblock with generation %llu.\n", root->fs_info->super_copy.generation);
 
--- btrfs-progs-v0.19-118-gfdb6c04.orig/btrfslabel.c
+++ btrfs-progs-v0.19-118-gfdb6c04/btrfslabel.c
@@ -46,7 +46,7 @@
 #define GET_LABEL                      3
 #define SET_LABEL                      4
 
-static void change_label_unmounted(char *dev, char *nLabel)
+static int change_label_unmounted(char *dev, char *nLabel)
 {
        struct btrfs_root *root;
        struct btrfs_trans_handle *trans;
@@ -55,6 +55,10 @@ static void change_label_unmounted(char
         * and as read-write.
         */
        root = open_ctree(dev, 0, 1);
+       if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		return -1;
+       }
 
        trans = btrfs_start_transaction(root, 1);
        strncpy(root->fs_info->super_copy.label, nLabel, BTRFS_LABEL_SIZE);
@@ -62,9 +66,10 @@ static void change_label_unmounted(char
 
        /* Now we close it since we are done. */
        close_ctree(root);
+       return 0;
 }
 
-static void get_label_unmounted(char *dev)
+static int get_label_unmounted(char *dev)
 {
        struct btrfs_root *root;
 
@@ -72,11 +77,16 @@ static void get_label_unmounted(char *de
         * and as read-only.
         */
        root = open_ctree(dev, 0, 0);
+       if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		return -1;
+       }
 
        fprintf(stdout, "%s\n", root->fs_info->super_copy.label);
 
        /* Now we close it since we are done. */
        close_ctree(root);
+       return 0;
 }
 
 int get_label(char *btrfs_dev)
@@ -95,8 +105,7 @@ int get_label(char *btrfs_dev)
 	       fprintf(stderr, "FATAL: the filesystem has to be unmounted\n");
 	       return -2;
 	}
-	get_label_unmounted(btrfs_dev);
-	return 0;
+	return get_label_unmounted(btrfs_dev);
 }
 
 
@@ -116,6 +125,5 @@ int set_label(char *btrfs_dev, char *nLa
 	       fprintf(stderr, "FATAL: the filesystem has to be unmounted\n");
 	       return -2;
 	}
-	change_label_unmounted(btrfs_dev, nLabel);
-	return 0;
+	return change_label_unmounted(btrfs_dev, nLabel);
 }
--- btrfs-progs-v0.19-118-gfdb6c04.orig/btrfstune.c
+++ btrfs-progs-v0.19-118-gfdb6c04/btrfstune.c
@@ -108,6 +108,11 @@ int main(int argc, char *argv[])
 
 	root = open_ctree(device, 0, 1);
 
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		return 1;
+	}
+
 	if (seeding_flag) {
 		ret = update_seeding_flag(root, seeding_value);
 		if (!ret)
--- btrfs-progs-v0.19-118-gfdb6c04.orig/dir-test.c
+++ btrfs-progs-v0.19-118-gfdb6c04/dir-test.c
@@ -436,6 +436,12 @@ int main(int ac, char **av)
 	radix_tree_init();
 
 	root = open_ctree(av[ac-1], &super, 0);
+
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		return 1;
+	}
+
 	trans = btrfs_start_transaction(root, 1);
 
 	dir_oid = btrfs_super_root_dir(&super);
@@ -479,6 +485,11 @@ int main(int ac, char **av)
 				btrfs_header_nritems(&root->node->node.header));
 			close_ctree(root, &super);
 			root = open_ctree("dbfile", &super, 0);
+
+			if (!root) {
+				fprintf(stderr, "Open ctree failed\n");
+				return 1;
+			}
 		}
 		while(count--) {
 			ret = ops[op](trans, root, &radix);
--- btrfs-progs-v0.19-118-gfdb6c04.orig/find-root.c
+++ btrfs-progs-v0.19-118-gfdb6c04/find-root.c
@@ -351,8 +351,11 @@ int main(int argc, char **argv)
 
 	root = open_ctree_broken(dev_fd, argv[optind]);
 	close(dev_fd);
-	if (!root)
+
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
 		exit(1);
+	}
 
 	csum_size = btrfs_super_csum_size(&root->fs_info->super_copy);
 	ret = find_root(root);
--- btrfs-progs-v0.19-118-gfdb6c04.orig/mkfs.c
+++ btrfs-progs-v0.19-118-gfdb6c04/mkfs.c
@@ -1362,8 +1362,9 @@ int main(int ac, char **av)
 
 	root = open_ctree(file, 0, O_RDWR);
 	if (!root) {
-		fprintf(stderr, "ctree init failed\n");
-		return -1;
+		fprintf(stderr, "Open ctree failed\n");
+		close (fd);
+		exit(1);
 	}
 	root->fs_info->alloc_start = alloc_start;
 
--- btrfs-progs-v0.19-118-gfdb6c04.orig/quick-test.c
+++ btrfs-progs-v0.19-118-gfdb6c04/quick-test.c
@@ -52,6 +52,10 @@ int main(int ac, char **av) {
 	radix_tree_init();
 
 	root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, O_RDWR);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	trans = btrfs_start_transaction(root, 1);
 	srand(55);
 	btrfs_set_key_type(&ins, BTRFS_STRING_ITEM_KEY);
@@ -75,6 +79,10 @@ int main(int ac, char **av) {
 	close_ctree(root);
 	exit(1);
 	root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, O_RDWR);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	printf("starting search\n");
 	srand(55);
 	for (i = 0; i < run_size; i++) {
@@ -94,6 +102,10 @@ int main(int ac, char **av) {
 	close_ctree(root);
 
 	root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, O_RDWR);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	printf("node %p level %d total ptrs %d free spc %lu\n", root->node,
 	        btrfs_header_level(root->node),
 		btrfs_header_nritems(root->node),
@@ -122,6 +134,10 @@ int main(int ac, char **av) {
 	close_ctree(root);
 
 	root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, O_RDWR);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	trans = btrfs_start_transaction(root, 1);
 	srand(128);
 	for (i = 0; i < run_size; i++) {
@@ -138,6 +154,10 @@ int main(int ac, char **av) {
 	close_ctree(root);
 
 	root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, O_RDWR);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	srand(128);
 	printf("starting search2\n");
 	for (i = 0; i < run_size; i++) {
--- btrfs-progs-v0.19-118-gfdb6c04.orig/random-test.c
+++ btrfs-progs-v0.19-118-gfdb6c04/random-test.c
@@ -356,6 +356,10 @@ int main(int ac, char **av)
 	struct btrfs_trans_handle *trans;
 	radix_tree_init();
 	root = open_ctree("dbfile", &super);
+	if (!root) {
+		fprintf(stderr, "Open ctree failed\n");
+		exit(1);
+	}
 	fill_radix(root, &radix);
 
 	signal(SIGTERM, sigstopper);
@@ -398,6 +402,10 @@ int main(int ac, char **av)
 				btrfs_header_nritems(&root->node->node.header));
 			close_ctree(root, &super);
 			root = open_ctree("dbfile", &super);
+			if (!root) {
+				fprintf(stderr, "Open ctree failed\n");
+				goto out;
+			}
 		}
 		while(count--) {
 			ret = ops[op](trans, root, &radix);