diff --git a/kernel/mem.c b/kernel/mem.c
index a6241f6e..9ea3a4eb 100644
--- a/kernel/mem.c
+++ b/kernel/mem.c
@@ -1449,6 +1449,13 @@ out_linux:
 			reason, error);
 		unhandled_page_fault(thread, fault_addr, reason, regs);
 		preempt_enable();
+
+#ifdef ENABLE_FUGAKU_DEBUG
+		kprintf("%s: sending SIGSTOP to TID: %d\n", __func__, thread->tid);
+		do_kill(thread, thread->proc->pid, thread->tid, SIGSTOP, NULL, 0);
+		goto out;
+#endif
+
 		memset(&info, '\0', sizeof info);
 		if (error == -ERANGE) {
 			info.si_signo = SIGBUS;