[src/trunk]: src/sys/arch/powerpc/powerpc switch an assert in backtrace to an...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/96e785a012b2
branches:  trunk
changeset: 359899:96e785a012b2
user:      mrg <mrg%NetBSD.org@localhost>
date:      Wed Feb 28 20:11:09 2018 +0000

description:
switch an assert in backtrace to an error return.

diffstat:

 sys/arch/powerpc/powerpc/db_trace.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r 37a7cd103c70 -r 96e785a012b2 sys/arch/powerpc/powerpc/db_trace.c
--- a/sys/arch/powerpc/powerpc/db_trace.c       Wed Feb 28 20:09:29 2018 +0000
+++ b/sys/arch/powerpc/powerpc/db_trace.c       Wed Feb 28 20:11:09 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_trace.c,v 1.57 2011/12/13 11:03:52 kiyohara Exp $   */
+/*     $NetBSD: db_trace.c,v 1.58 2018/02/28 20:11:09 mrg Exp $        */
 /*     $OpenBSD: db_trace.c,v 1.3 1997/03/21 02:10:48 niklas Exp $     */
 
 /*
@@ -28,7 +28,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_trace.c,v 1.57 2011/12/13 11:03:52 kiyohara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_trace.c,v 1.58 2018/02/28 20:11:09 mrg Exp $");
 
 #include "opt_ppcarch.h"
 
@@ -161,7 +161,10 @@
                                        return;
                                }
                                l = LIST_FIRST(&p->p_lwps);
-                               KASSERT(l != NULL);
+                               if (l == NULL) {
+                                       (*pr)("trace: no LWP?\n");
+                                       return;
+                               }
                        }
                        (*pr)("lid %d ", l->l_lid);
                        pcb = lwp_getpcb(l);