X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fkprobes.c;h=e3a5d817ac9b0f07b514587a7ec03453461ab655;hb=75e7766680b4b196073bdc941b8a6570b9f777af;hp=f9798ff7899f4a610823fd641fe5e2dde0e746f7;hpb=74a0b5762713a26496db72eac34fbbed46f20fce;p=linux-2.6

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index f9798ff789..e3a5d817ac 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -716,6 +716,18 @@ int __kprobes register_kretprobe(struct kretprobe *rp)
 	int ret = 0;
 	struct kretprobe_instance *inst;
 	int i;
+	void *addr = rp->kp.addr;
+
+	if (kretprobe_blacklist_size) {
+		if (addr == NULL)
+			kprobe_lookup_name(rp->kp.symbol_name, addr);
+		addr += rp->kp.offset;
+
+		for (i = 0; kretprobe_blacklist[i].name != NULL; i++) {
+			if (kretprobe_blacklist[i].addr == addr)
+				return -EINVAL;
+		}
+	}
 
 	rp->kp.pre_handler = pre_handler_kretprobe;
 	rp->kp.post_handler = NULL;
@@ -794,6 +806,17 @@ static int __init init_kprobes(void)
 		INIT_HLIST_HEAD(&kretprobe_inst_table[i]);
 	}
 
+	if (kretprobe_blacklist_size) {
+		/* lookup the function address from its name */
+		for (i = 0; kretprobe_blacklist[i].name != NULL; i++) {
+			kprobe_lookup_name(kretprobe_blacklist[i].name,
+					   kretprobe_blacklist[i].addr);
+			if (!kretprobe_blacklist[i].addr)
+				printk("kretprobe: lookup failed: %s\n",
+				       kretprobe_blacklist[i].name);
+		}
+	}
+
 	/* By default, kprobes are enabled */
 	kprobe_enabled = true;