X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=kernel%2Fnotifier.c;h=61d5aa5eced3466393582e4f566b63c468ea7cc3;hb=7f6e0e449c00bafe1c46471409fa1b8e4222dcf2;hp=143fdd77dbf76f2afcb62d25c10bdb0fb5fc3314;hpb=1b2439dbb703ae8d95a9ce7ece6b7800b80f41f0;p=safe%2Fjmp%2Flinux-2.6

diff --git a/kernel/notifier.c b/kernel/notifier.c
index 143fdd7..61d5aa5 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -21,10 +21,6 @@ BLOCKING_NOTIFIER_HEAD(reboot_notifier_list);
 static int notifier_chain_register(struct notifier_block **nl,
 		struct notifier_block *n)
 {
-	if (!kernel_text_address((unsigned long)n->notifier_call)) {
-		WARN(1, "Invalid notifier registered!");
-		return 0;
-	}
 	while ((*nl) != NULL) {
 		if (n->priority > (*nl)->priority)
 			break;
@@ -38,10 +34,6 @@ static int notifier_chain_register(struct notifier_block **nl,
 static int notifier_chain_cond_register(struct notifier_block **nl,
 		struct notifier_block *n)
 {
-	if (!kernel_text_address((unsigned long)n->notifier_call)) {
-		WARN(1, "Invalid notifier registered!");
-		return 0;
-	}
 	while ((*nl) != NULL) {
 		if ((*nl) == n)
 			return 0;
@@ -92,7 +84,7 @@ static int __kprobes notifier_call_chain(struct notifier_block **nl,
 		next_nb = rcu_dereference(nb->next);
 
 #ifdef CONFIG_DEBUG_NOTIFIERS
-		if (!kernel_text_address((unsigned long)nb->notifier_call)) {
+		if (unlikely(!func_ptr_is_kernel_text(nb->notifier_call))) {
 			WARN(1, "Invalid notifier called!");
 			nb = next_nb;
 			continue;
@@ -566,7 +558,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
 
 static ATOMIC_NOTIFIER_HEAD(die_chain);
 
-int notify_die(enum die_val val, const char *str,
+int notrace notify_die(enum die_val val, const char *str,
 	       struct pt_regs *regs, long err, int trap, int sig)
 {
 	struct die_args args = {