module: printk message when module signature fail taints kernel.
Reported-by: Chris Samuel <chris@csamuel.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/kernel/module.c b/kernel/module.c
index eab0827..e69a5a6 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3192,8 +3192,13 @@
#ifdef CONFIG_MODULE_SIG
mod->sig_ok = info->sig_ok;
- if (!mod->sig_ok)
+ if (!mod->sig_ok) {
+ printk_once(KERN_NOTICE
+ "%s: module verification failed: signature and/or"
+ " required key missing - tainting kernel\n",
+ mod->name);
add_taint_module(mod, TAINT_FORCED_MODULE);
+ }
#endif
/* Now module is in final location, initialize linked lists, etc. */