From owner-freebsd-questions Wed Dec 4 9:27:51 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 56CB237B401 for ; Wed, 4 Dec 2002 09:27:49 -0800 (PST) Received: from casper.sri.com (casper.SRI.COM [128.18.243.12]) by mx1.FreeBSD.org (Postfix) with SMTP id 722AF43EBE for ; Wed, 4 Dec 2002 09:27:48 -0800 (PST) (envelope-from hogsett@csl.sri.com) Received: (qmail 1606 invoked from network); 4 Dec 2002 17:27:43 -0000 Received: from localhost (HELO casper.SRI.COM) (127.0.0.1) by casper.sri.com with SMTP; 4 Dec 2002 17:27:43 -0000 Received: from quarter.csl.sri.com ([130.107.1.30]) by casper.SRI.COM (NAVGW 2.5.2.17) with SMTP id M2002120409274228063 ; Wed, 04 Dec 2002 09:27:42 -0800 Received: from beast.csl.sri.com (beast.csl.sri.com [130.107.2.57]) by quarter.csl.sri.com (8.12.4/8.12.4) with ESMTP id gB4HRgnr014283; Wed, 4 Dec 2002 09:27:42 -0800 Received: from beast.csl.sri.com (localhost [127.0.0.1]) by beast.csl.sri.com (8.12.6/8.12.6) with ESMTP id gB4HRerp004518; Wed, 4 Dec 2002 09:27:40 -0800 (PST) (envelope-from hogsett@beast.csl.sri.com) Received: (from hogsett@localhost) by beast.csl.sri.com (8.12.6/8.12.6/Submit) id gB4HReCs004517; Wed, 4 Dec 2002 09:27:40 -0800 (PST) (envelope-from hogsett) Date: Wed, 4 Dec 2002 09:27:40 -0800 (PST) Message-Id: <200212041727.gB4HReCs004517@beast.csl.sri.com> To: FreeBSD-gnats-submit@freebsd.org Subject: top dumps core if specific errors in password file From: Mike Hogsett Reply-To: Mike Hogsett Cc: freebsd-questions@freebsd.org X-send-pr-version: 3.113 X-GNATS-Notify: Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG >Submitter-Id: current-users >Originator: Mike Hogsett >Organization: SRI International Computer Science Laboratory >Confidential: no >Synopsis: top dumps core if specific errors in password file >Severity: serious >Priority: medium >Category: bin >Class: sw-bug >Release: FreeBSD 4.7-RELEASE-p2 i386 >Environment: System: FreeBSD beast.csl.sri.com 4.7-RELEASE-p2 FreeBSD 4.7-RELEASE-p2 #2: Tue Nov 26 16:48:30 PST 2002 hogsett@beast.csl.sri.com:/usr/obj/usr/src/sys/BEAST i386 >Description: If there is an incorrect entry in a NIS netgroup file & this netgroup file is used to append specific NIS password database entries to the local password database top will dump core at startup. In gdb it shows top failed inside endpwent(3) (gdb) where #0 0x2810cbd8 in endpwent () from /usr/lib/libc.so.4 #1 0x2810d421 in endpwent () from /usr/lib/libc.so.4 #2 0x2810c1da in getpwent () from /usr/lib/libc.so.4 #3 0x804b28e in free () #4 0x804cb94 in clear () #5 0x8049389 in free () Since this error is appears to be within endpwent(3) I presume that programs using this function may also be unstable. >How-To-Repeat: NIS netgroup file [NOTE: user3 entry incorrect] : somegroup (,user2,),(,user2,),(user3) master.password contains : +@somegroup::::::::/tmp:/usr/bin/false >Fix: Well obviously fix the netgroup file error, but endpwent(3) should not fail so severely. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message