diff --git a/.bcachefs_revision b/.bcachefs_revision
index 7a950b30..f460dd27 100644
--- a/.bcachefs_revision
+++ b/.bcachefs_revision
@@ -1 +1 @@
-6406e0583565af5f7c51f9c43a34e5f7a92dadcd
+4366ca365f2c7473939dd361852fff9a144cb5d0
diff --git a/libbcachefs/btree_update_interior.c b/libbcachefs/btree_update_interior.c
index d4f1920c..e798c461 100644
--- a/libbcachefs/btree_update_interior.c
+++ b/libbcachefs/btree_update_interior.c
@@ -1347,7 +1347,7 @@ static void __btree_split_node(struct btree_update *as,
 			       struct btree *n[2])
 {
 	struct bkey_packed *k;
-	struct bpos n1_pos;
+	struct bpos n1_pos = POS_MIN;
 	struct btree_node_iter iter;
 	struct bset *bsets[2];
 	struct bkey_format_state format[2];