diff --git a/kaleid/kernel/sh/shcmds.c b/kaleid/kernel/sh/shcmds.c
index dffa874..c65a675 100644
--- a/kaleid/kernel/sh/shcmds.c
+++ b/kaleid/kernel/sh/shcmds.c
@@ -205,12 +205,10 @@ error_t CmdStackOverflow(int argc, char **argv, char *cmdline)
 
 error_t CmdStackUnderflow(int argc, char **argv, char *cmdline)
 {
-    KernLog("\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n"
-            "\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n"
-            "\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n"
-            "\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n"
-            "\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n"
-            );
+    for (int i = 0 ;; i++) {
+        asm volatile ("pop %rax\n");
+    }
+
     return EOK;
 }