btrfs-progs: catch invalid flags in open_ctree_fd

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/disk-io.c b/disk-io.c
index b7202fa..ce0bbee 100644 (file)
--- a/disk-io.c
+++ b/disk-io.c
@@ -1411,7 +1411,11 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr,
        struct btrfs_fs_info *info;
 
        /* This flags may not return fs_info with any valid root */
-       BUG_ON(flags & OPEN_CTREE_IGNORE_CHUNK_TREE_ERROR);
+       if (flags & OPEN_CTREE_IGNORE_CHUNK_TREE_ERROR) {
+               error("invalid open_ctree flags: 0x%llx",
+                               (unsigned long long)flags);
+               return NULL;
+       }
        info = __open_ctree_fd(fp, path, sb_bytenr, 0, 0, flags);
        if (!info)
                return NULL;