diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index dfaf878e..d17647d3 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -1063,6 +1063,9 @@ static bool test_has_userptr(struct kgem *kgem)
 	if (kgem->gen == 040)
 		return false;
 
+	if (kgem->gem >= 0100)
+		return false; /* FIXME https://bugs.freedesktop.org/show_bug.cgi?id=79053 */
+
 	if (posix_memalign(&ptr, PAGE_SIZE, PAGE_SIZE))
 		return false;