--- wl-6.30.223.271/wl/src/wl/sys/wl_linux.c~	2020-10-21 08:40:00.000000000 +0200
+++ wl-6.30.223.271/wl/src/wl/sys/wl_linux.c	2020-10-21 08:41:58.566248630 +0200
@@ -1662,7 +1662,11 @@
 		goto done2;
 	}
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
+	if (uaccess_kernel())
+#else
 	if (segment_eq(get_fs(), KERNEL_DS))
+#endif
 		buf = ioc.buf;
 
 	else if (ioc.buf) {