try to fix page fault

testing/build.sh

@@ -0,0 +1,3 @@
+nasm -f elf64 test.asm -o test.o
+ld -T link.ld -nostdlib --no-dynamic-linker --strip-all test.o -o sk-hello.elf
+echo "Test executable has been built successfully."

testing/test.asm

@@ -4,5 +4,7 @@ section .text
 
 _start:
     int 0x80
-lol:
-    jmp lol
+    ; tell the kernel to exit the process.
+    mov rax, 10
+    int 0x80
+    ret