From owner-freebsd-bugs@FreeBSD.ORG Tue Dec 6 00:00:24 2005 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3F27216A42A for ; Tue, 6 Dec 2005 00:00:23 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 73F4F43D5D for ; Tue, 6 Dec 2005 00:00:21 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.3/8.13.3) with ESMTP id jB600LZt042691 for ; Tue, 6 Dec 2005 00:00:21 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.3/8.13.1/Submit) id jB600LdP042690; Tue, 6 Dec 2005 00:00:21 GMT (envelope-from gnats) Resent-Date: Tue, 6 Dec 2005 00:00:21 GMT Resent-Message-Id: <200512060000.jB600LdP042690@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, "Daniel J. O'Connor" Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B025216A423 for ; Mon, 5 Dec 2005 23:51:19 +0000 (GMT) (envelope-from darius@midget.dons.net.au) Received: from smtp1.adl2.internode.on.net (smtp1.adl2.internode.on.net [203.16.214.181]) by mx1.FreeBSD.org (Postfix) with ESMTP id E33FC43D66 for ; Mon, 5 Dec 2005 23:51:07 +0000 (GMT) (envelope-from darius@midget.dons.net.au) Received: from midget.dons.net.au (ppp137-51.lns2.adl2.internode.on.net [59.167.137.51]) by smtp1.adl2.internode.on.net (8.12.9/8.12.6) with ESMTP id jB5NovsU085321 for ; Tue, 6 Dec 2005 10:20:59 +1030 (CST) (envelope-from darius@midget.dons.net.au) Received: from midget.dons.net.au (localhost [127.0.0.1]) by midget.dons.net.au (8.13.4/8.13.3) with ESMTP id jB5Notxx016046 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 6 Dec 2005 10:20:56 +1030 (CST) (envelope-from darius@midget.dons.net.au) Received: (from darius@localhost) by midget.dons.net.au (8.13.4/8.13.3/Submit) id jB5Nosxo016045; Tue, 6 Dec 2005 10:20:54 +1030 (CST) (envelope-from darius) Message-Id: <200512052350.jB5Nosxo016045@midget.dons.net.au> Date: Tue, 6 Dec 2005 10:20:54 +1030 (CST) From: "Daniel J. O'Connor" To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Subject: bin/90002: env spins chewing CPU in some circumstances X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: "Daniel J. O'Connor" List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Dec 2005 00:00:24 -0000 >Number: 90002 >Category: bin >Synopsis: env spins chewing CPU in some circumstances >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Dec 06 00:00:18 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Daniel J. O'Connor >Release: FreeBSD 6.0-RELEASE amd64 >Organization: >Environment: FreeBSD cain.gsoft.com.au 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Wed Nov 2 19:07:38 UTC 2005 root@rat.samsco.home:/usr/obj/usr/src/sys/GENERIC amd64 >Description: The env program has some regressions in 6.0 when used as a script interpreter. In some cases it will spin in a tight loop consuming CPU. >How-To-Repeat: [cain 10:15] ~ >cat ./testscript #!/usr/bin/env FOO=BAR /bin/sh echo FOO in $FOO In 6.0 amd64, and -current i386 it exhibits the failure above. In i386 5.4 it works. I believe it is a problem with 6.0 onwards and not architecture specific but I don't have enough test machines to be sure. It appears to be going in a strange loop allocating and freeing memory as the size fluctuates between 1.2Mb and 380kb. >Fix: >Release-Note: >Audit-Trail: >Unformatted: