From 2396628bb45718f0623614c6adece1a978808e5d Mon Sep 17 00:00:00 2001
From: David Xu <davidxu@FreeBSD.org>
Date: Tue, 20 Jul 2004 01:38:59 +0000
Subject: [PATCH] Make end of frames for KSE thread, for system scope thread,
 without this change, debugger will dump a weird stack backtrace.

---
 sys/i386/i386/vm_machdep.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c
index dca0f15c681a..4452acf2f579 100644
--- a/sys/i386/i386/vm_machdep.c
+++ b/sys/i386/i386/vm_machdep.c
@@ -441,6 +441,7 @@ cpu_set_upcall_kse(struct thread *td, struct kse_upcall *ku)
 	 * Set the trap frame to point at the beginning of the uts
 	 * function.
 	 */
+	td->td_frame->tf_ebp = 0; 
 	td->td_frame->tf_esp =
 	    (int)ku->ku_stack.ss_sp + ku->ku_stack.ss_size - 16;
 	td->td_frame->tf_eip = (int)ku->ku_func;