[src/netbsd-9]: src/sys/kern Pull up following revision(s) (requested by kami...

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

details:   https://anonhg.NetBSD.org/src/rev/9c4361b1beae
branches:  netbsd-9
changeset: 458482:9c4361b1beae
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Oct 15 18:21:06 2019 +0000

description:
Pull up following revision(s) (requested by kamil in ticket #309):

        sys/kern/sys_ptrace_common.c: revision 1.67

Avoid signed integer overflow for -lwp where lwp is INT_MIN

diffstat:

 sys/kern/sys_ptrace_common.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (32 lines):

diff -r 2b0c7f8f5064 -r 9c4361b1beae sys/kern/sys_ptrace_common.c
--- a/sys/kern/sys_ptrace_common.c      Tue Oct 15 18:17:06 2019 +0000
+++ b/sys/kern/sys_ptrace_common.c      Tue Oct 15 18:21:06 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_ptrace_common.c,v 1.58 2019/07/18 20:10:46 kamil Exp $     */
+/*     $NetBSD: sys_ptrace_common.c,v 1.58.2.1 2019/10/15 18:21:06 martin Exp $        */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -118,7 +118,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.58 2019/07/18 20:10:46 kamil Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.58.2.1 2019/10/15 18:21:06 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_ptrace.h"
@@ -1205,8 +1205,12 @@
                                signo = tmp;
                                tmp = 0;        /* don't search for LWP */
                        }
-               } else
+               } else if (tmp == INT_MIN) {
+                       error = ESRCH;
+                       break;
+               } else {
                        tmp = -tmp;
+               }
 
                if (tmp > 0) {
                        if (req == PT_DETACH) {