Originally only if 'block_only' is specified, the 'fs_root == NULL'
will be checked. But if 'block_only' is not specified and close_root
will be called blindly without checking 'fs_root == NULL', which is
unsafe.
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
fprintf(stderr, "unable to open %s\n", av[optind]);
exit(1);
}
+
root = info->fs_root;
+ if (!root) {
+ fprintf(stderr, "unable to open %s\n", av[optind]);
+ exit(1);
+ }
if (block_only) {
- if (!root) {
- fprintf(stderr, "unable to open %s\n", av[optind]);
- exit(1);
- }
leaf = read_tree_block(root,
block_only,
root->leafsize, 0);