X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fnotifier.c;h=61d5aa5eced3466393582e4f566b63c468ea7cc3;hb=e1eb1ebcca871673c76caf63335c4237680040f1;hp=4282c0a40a57ada651b86c7dcce2389abf489448;hpb=b31a0fecd1dd01f1db406014a7c8a73983e04cc9;p=pandora-kernel.git

diff --git a/kernel/notifier.c b/kernel/notifier.c
index 4282c0a40a57..61d5aa5eced3 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -82,6 +82,14 @@ static int __kprobes notifier_call_chain(struct notifier_block **nl,
 
 	while (nb && nr_to_call) {
 		next_nb = rcu_dereference(nb->next);
+
+#ifdef CONFIG_DEBUG_NOTIFIERS
+		if (unlikely(!func_ptr_is_kernel_text(nb->notifier_call))) {
+			WARN(1, "Invalid notifier called!");
+			nb = next_nb;
+			continue;
+		}
+#endif
 		ret = nb->notifier_call(nb, val, v);
 
 		if (nr_calls)