Module Name: src
Committed By: ryo
Date: Fri Dec 7 18:46:28 UTC 2018
Modified Files:
src/sys/arch/aarch64/aarch64: trap.c
Log Message:
add simple stack overflow checker for debugging
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/sys/arch/aarch64/aarch64/trap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/aarch64/aarch64/trap.c
diff -u src/sys/arch/aarch64/aarch64/trap.c:1.11 src/sys/arch/aarch64/aarch64/trap.c:1.12
--- src/sys/arch/aarch64/aarch64/trap.c:1.11 Fri Oct 12 01:28:57 2018
+++ src/sys/arch/aarch64/aarch64/trap.c Fri Dec 7 18:46:27 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: trap.c,v 1.11 2018/10/12 01:28:57 ryo Exp $ */
+/* $NetBSD: trap.c,v 1.12 2018/12/07 18:46:27 ryo Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: trap.c,v 1.11 2018/10/12 01:28:57 ryo Exp $");
+__KERNEL_RCSID(1, "$NetBSD: trap.c,v 1.12 2018/12/07 18:46:27 ryo Exp $");
#include "opt_arm_intr_impl.h"
#include "opt_compat_netbsd32.h"
@@ -296,6 +296,15 @@ interrupt(struct trapframe *tf)
{
struct cpu_info * const ci = curcpu();
+#ifdef STACKCHECKS
+ struct lwp *l = curlwp;
+ void *sp = (void *)reg_sp_read();
+ if (l->l_addr >= sp) {
+ panic("lwp/interrupt stack overflow detected."
+ " lwp=%p, sp=%p, l_addr=%p", l, sp, l->l_addr);
+ }
+#endif
+
/* enable traps */
daif_enable(DAIF_D|DAIF_A);
