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-rw-r--r--lib/xarray.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/xarray.c b/lib/xarray.c
index 76dde3a1cacf..ae3d80f4b4ee 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -1910,6 +1910,7 @@ EXPORT_SYMBOL(xa_store_range);
* @xas: XArray operation state.
*
* Called after xas_load, the xas should not be in an error state.
+ * The xas should not be pointing to a sibling entry.
*
* Return: A number between 0 and 63 indicating the order of the entry.
*/
@@ -1920,6 +1921,8 @@ int xas_get_order(struct xa_state *xas)
if (!xas->xa_node)
return 0;
+ XA_NODE_BUG_ON(xas->xa_node, xa_is_sibling(xa_entry(xas->xa,
+ xas->xa_node, xas->xa_offset)));
for (;;) {
unsigned int slot = xas->xa_offset + (1 << order);