I created my own kernel patch to make nvidia drivers work again. The patch reverts the commit which introduced the TAINT stuff:
The patch is for kernel/module.c:
--- linux-5.9/kernel/module.c.old 2020-10-14 06:51:57.598066293 +0200
+++ linux-5.9/kernel/module.c 2020-10-14 07:58:16.504570606 +0200
@@ -1431,6 +1431,7 @@
return 0;
}
+#if 0
static bool inherit_taint(struct module *mod, struct module *owner)
{
if (!owner || !test_bit(TAINT_PROPRIETARY_MODULE, &owner->taints))
@@ -1449,6 +1450,7 @@
}
return true;
}
+#endif
/* Resolve a symbol for this module. I.e. if we find one, record usage. */
static const struct kernel_symbol *resolve_symbol(struct module *mod,
@@ -1474,6 +1476,7 @@
if (!sym)
goto unlock;
+#if 0
if (license == GPL_ONLY)
mod->using_gplonly_symbols = true;
@@ -1481,6 +1484,7 @@
sym = NULL;
goto getname;
}
+#endif
if (!check_version(info, name, mod, crc)) {
sym = ERR_PTR(-EINVAL);
It works just fine!