From owner-freebsd-bugs@FreeBSD.ORG Sat Dec 12 02:10:03 2009 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C61DF106566B for ; Sat, 12 Dec 2009 02:10:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 895878FC15 for ; Sat, 12 Dec 2009 02:10:03 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id nBC2A3gw075092 for ; Sat, 12 Dec 2009 02:10:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id nBC2A3sX075091; Sat, 12 Dec 2009 02:10:03 GMT (envelope-from gnats) Resent-Date: Sat, 12 Dec 2009 02:10:03 GMT Resent-Message-Id: <200912120210.nBC2A3sX075091@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, "Thomas E. Spanjaard" Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 68DF61065676 for ; Sat, 12 Dec 2009 02:02:02 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id 3E2FC8FC08 for ; Sat, 12 Dec 2009 02:02:02 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id nBC221Nv089575 for ; Sat, 12 Dec 2009 02:02:01 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id nBC221gT089574; Sat, 12 Dec 2009 02:02:01 GMT (envelope-from nobody) Message-Id: <200912120202.nBC221gT089574@www.freebsd.org> Date: Sat, 12 Dec 2009 02:02:01 GMT From: "Thomas E. Spanjaard" To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: misc/141390: login(1) or PAM broken after -CURRENT upgrade X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Dec 2009 02:10:03 -0000 >Number: 141390 >Category: misc >Synopsis: login(1) or PAM broken after -CURRENT upgrade >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Dec 12 02:10:03 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Thomas E. Spanjaard >Release: 9.0-CURRENT >Organization: >Environment: FreeBSD ara.ssr.netphreax.net 9.0-CURRENT FreeBSD 9.0-CURRENT #0 r200414: Fri Dec 11 20:02:44 UTC 2009 tgen@ara.ssr.netphreax.net:/usr/obj/usr/home/tgen/Work/FreeBSD-HEAD/sys/ARA amd64 >Description: login(1) doesn't work anymore after I updated my system (late October 9.0-CURRENT) as per the procedure outlined in http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html . login(1) invariably segfaults if you enter the right credentials, making logins on the console impossible. SSH still works, which is how I was able to get the following information: Program received signal SIGSEGV, Segmentation fault. 0x0000000800a55d08 in strncpy () from /lib/libc.so.7 (gdb) bt #0 0x0000000800a55d08 in strncpy () from /lib/libc.so.7 #1 0x0000000801a44b0e in ulog_login () from /lib/libulog.so.0 #2 0x0000000801941d66 in pam_sm_open_session () from /usr/lib/pam_lastlog.so.5 #3 0x000000080076159a in openpam_dispatch () from /usr/lib/libpam.so.5 #4 0x0000000000403574 in main (argc=0, argv=0x7fffffffeb08) at /usr/home/tgen/Work/FreeBSD-HEAD/usr.bin/login/login.c:525 (gdb) list 525 520 pam_syslog("pam_setcred()"); 521 bail(NO_SLEEP_EXIT, 1); 522 } 523 pam_cred_established = 1; 524 525 pam_err = pam_open_session(pamh, pam_silent); 526 if (pam_err != PAM_SUCCESS) { 527 pam_syslog("pam_open_session()"); 528 bail(NO_SLEEP_EXIT, 1); 529 } Smells like a null pointer dereference, but where and why I have no idea. As SSH logins work, and I assume that uses PAM as well, the problem must be elsewhere. Mergemaster was tedious, as it complained about all sorts of files in /etc having CVS Ids instead of SVN ones, including /etc/login.*. I did run a cap_mkdb though, so that shouldn't be the problem. >How-To-Repeat: Ostensibly, updating a late October 9.0-CURRENT system to HEAD. After a reboot, console logins shouldn't work anymore (well, they should, but don't... you get what I mean ;)). >Fix: >Release-Note: >Audit-Trail: >Unformatted: