X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fkprobes.c;h=3e9f513a728d4a4211ca819c894c3624d74973c4;hb=1c10070a55a38ad8489df8afd52c9a3ffd46bbb5;hp=9e47d8c493f3a7638d06892b2835ad87c859f7bf;hpb=393bfca19ecdce60a8d9a4d2577cac11ca924a25;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 9e47d8c493f..3e9f513a728 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -675,9 +675,18 @@ static struct notifier_block kprobe_exceptions_nb = {
 	.priority = 0x7fffffff /* we need to be notified first */
 };
 
+unsigned long __weak arch_deref_entry_point(void *entry)
+{
+	return (unsigned long)entry;
+}
 
 int __kprobes register_jprobe(struct jprobe *jp)
 {
+	unsigned long addr = arch_deref_entry_point(jp->entry);
+
+	if (!kernel_text_address(addr))
+		return -EINVAL;
+
 	/* Todo: Verify probepoint is a function entry point */
 	jp->kp.pre_handler = setjmp_pre_handler;
 	jp->kp.break_handler = longjmp_break_handler;