diff --git a/src/arch/x86_64/interrupt/exception.rs b/src/arch/x86_64/interrupt/exception.rs
index fe4ef61..ef1346d 100644
--- a/src/arch/x86_64/interrupt/exception.rs
+++ b/src/arch/x86_64/interrupt/exception.rs
@@ -52,28 +52,19 @@ nmi_handler!(non_maskable, |stack| {
     use crate::info;
     use crate::time::realtime;
 
-     let req = syscall::TimeSpec {
-        tv_sec: 0,
-        tv_nsec: 0,
-    };
-
     let time = realtime();
     info!("{} : Entering NMI", time);
 
-    // let mut rem = syscall::TimeSpec::default();
-    // let _ =  crate::syscall::time::nanosleep(&req, Some(&mut rem));
-
     // Page Fault
     let addr = 0xDEADC0DE as *const u8;
     let n = core::ptr::read(addr);
     println!("{}",n);
+    //loop{}
     // core::arch::asm!(
     // "
     //    mov rdx, [0xDEADC0DE]
     // ");
 
-    // let mut rem = syscall::TimeSpec::default();
-    // let _ = crate::syscall::time::nanosleep(&req, Some(&mut rem));
     let time = realtime();
     info!("{} : Exiting NMI", time);
 
@@ -173,6 +164,8 @@ interrupt_error!(page, |stack| {
     println!("  Reserved write: {}", stack.code & 1 << 3 != 0);
     println!("  Instruction fetch: {}", stack.code & 1 << 4 != 0);
     // stack.dump();
+    // stack.inner.iret.cs
+    // stack.inner.iret.rip
     stack_trace();
     // ksignal(SIGSEGV);
 
diff --git a/src/arch/x86_64/interrupt/handler.rs b/src/arch/x86_64/interrupt/handler.rs
index fb05409..c9451bd 100644
--- a/src/arch/x86_64/interrupt/handler.rs
+++ b/src/arch/x86_64/interrupt/handler.rs
@@ -509,10 +509,10 @@ macro_rules! nmi_handler {
                 "
                 nested_nmi:
                 /// ! repalce with address of repeat nmi and end repeat nmi
-                mov rdx, 0x080a3352
+                mov rdx, 0x0806f292
                 cmp	rdx, 8[rsp]
                 ja	1f
-                mov	rdx, 0x080a3377
+                mov	rdx, 0x0806f2b7
                 cmp	rdx, 8[rsp]
                 ja	nested_nmi_out
                 ",
@@ -527,7 +527,7 @@ macro_rules! nmi_handler {
                 pushf
                 push	{GDT_KERNEL_CODE}
                 //replace address repeat nmi
-                push	0x080a3352
+                push	0x0806f292
                 ",
                 // nested nmi out
                 "
@@ -586,9 +586,9 @@ macro_rules! nmi_handler {
                 "
                 //call {frsp}
                 7:
-                add	    rsp,$(12*8)
+                add	    rsp,$(5*8)
 
-                mov QWORD PTR 5*8[rsp], $0
+                mov QWORD PTR [rsp + 5 * 8], $0
 
                 //call {frsp}
                 iretq