summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/x86/kernel/kprobes.c3
-rw-r--r--kernel/kprobes.c4
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index 9453815..5de9f4a 100644
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -337,6 +337,9 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p)
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
+ if (alternatives_text_reserved(p->addr, p->addr))
+ return -EINVAL;
+
if (!can_probe((unsigned long)p->addr))
return -EILSEQ;
/* insn: must be on special executable page on x86. */
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 9907a03..c3340e8 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -44,6 +44,7 @@
#include <linux/debugfs.h>
#include <linux/kdebug.h>
#include <linux/memory.h>
+#include <linux/ftrace.h>
#include <asm-generic/sections.h>
#include <asm/cacheflush.h>
@@ -703,7 +704,8 @@ int __kprobes register_kprobe(struct kprobe *p)
preempt_disable();
if (!kernel_text_address((unsigned long) p->addr) ||
- in_kprobes_functions((unsigned long) p->addr)) {
+ in_kprobes_functions((unsigned long) p->addr) ||
+ ftrace_text_reserved(p->addr, p->addr)) {
preempt_enable();
return -EINVAL;
}
OpenPOWER on IntegriCloud