For KPROBES_ON_FTRACE case, we need to adjust the kprobe's addr
correspondingly.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>
---
kernel/kprobes.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 9873fc627d61..3fd2f68644da 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1484,15 +1484,19 @@ static inline int check_kprobe_rereg(struct kprobe *p)
int __weak arch_check_ftrace_location(struct kprobe *p)
{
- unsigned long ftrace_addr;
+ unsigned long ftrace_addr, addr = (unsigned long)p->addr;
- ftrace_addr = ftrace_location((unsigned long)p->addr);
+#ifdef CONFIG_KPROBES_ON_FTRACE
+ addr = ftrace_call_adjust(addr);
+#endif
+ ftrace_addr = ftrace_location(addr);
if (ftrace_addr) {
#ifdef CONFIG_KPROBES_ON_FTRACE
/* Given address is not on the instruction boundary */
- if ((unsigned long)p->addr != ftrace_addr)
+ if (addr != ftrace_addr)
return -EILSEQ;
p->flags |= KPROBE_FLAG_FTRACE;
+ p->addr = (kprobe_opcode_t *)addr;
#else /* !CONFIG_KPROBES_ON_FTRACE */
return -EINVAL;
#endif
--
2.23.0.rc1
