From 48f6dd8a8ca53595c936686cdeb613b37bc181ab Mon Sep 17 00:00:00 2001
From: Attilio Rao <attilio@FreeBSD.org>
Date: Sat, 7 Nov 2009 21:46:34 +0000
Subject: [PATCH] Use a safety belt for cases where corrupted narg can be
 passed to the ktrsyscall(). print_number() does decrement the number of
 arguments, leading to infinite loops for negative values.

Reported by:	Patrick Lamaiziere <patpr at davenulle dot org>,
		Jonathan Pascal <jkpyvxmzsa at mailinator dot com>
Submitted by:	jh
PR:		bin/120055, kern/119564
MFC:		1 week
---
 usr.bin/kdump/kdump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.bin/kdump/kdump.c b/usr.bin/kdump/kdump.c
index 3d8b93a6101..60ce05f4f2d 100644
--- a/usr.bin/kdump/kdump.c
+++ b/usr.bin/kdump/kdump.c
@@ -799,7 +799,7 @@ ktrsyscall(struct ktr_syscall *ktr)
 				narg--;
 			}
 		}
-		while (narg) {
+		while (narg > 0) {
 			print_number(ip,narg,c);
 		}
 		(void)putchar(')');