diff options
| -rw-r--r-- | arch/x86/kernel/kprobes/core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 60a540fcbd56..9b31790a0b0a 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -453,7 +453,11 @@ static void set_resume_flags(struct kprobe *p, struct insn *insn) break; #endif case 0xff: - opcode = insn->opcode.bytes[1]; + /* + * Since the 0xff is an extended group opcode, the instruction + * is determined by the MOD/RM byte. + */ + opcode = insn->modrm.bytes[0]; if ((opcode & 0x30) == 0x10) { /* * call absolute, indirect |