From owner-freebsd-ia64@FreeBSD.ORG Mon Jan 16 00:30:10 2006 Return-Path: X-Original-To: freebsd-ia64@hub.freebsd.org Delivered-To: freebsd-ia64@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 46F5716A422 for ; Mon, 16 Jan 2006 00:30:10 +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 F276F43D49 for ; Mon, 16 Jan 2006 00:30:08 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id k0G0U8vH040990 for ; Mon, 16 Jan 2006 00:30:08 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id k0G0U8TL040985; Mon, 16 Jan 2006 00:30:08 GMT (envelope-from gnats) Resent-Date: Mon, 16 Jan 2006 00:30:08 GMT Resent-Message-Id: <200601160030.k0G0U8TL040985@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-ia64@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Marcel Moolenaar Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B9AD116A41F for ; Mon, 16 Jan 2006 00:22:50 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8344F43D48 for ; Mon, 16 Jan 2006 00:22:50 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id k0G0Mo7B079468 for ; Mon, 16 Jan 2006 00:22:50 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id k0G0MosU079467; Mon, 16 Jan 2006 00:22:50 GMT (envelope-from nobody) Message-Id: <200601160022.k0G0MosU079467@www.freebsd.org> Date: Mon, 16 Jan 2006 00:22:50 GMT From: Marcel Moolenaar To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Cc: Subject: ia64/91846: TLS: malloc(3) exposes DTLS bug in non-threaded applications X-BeenThere: freebsd-ia64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the IA-64 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Jan 2006 00:30:10 -0000 >Number: 91846 >Category: ia64 >Synopsis: TLS: malloc(3) exposes DTLS bug in non-threaded applications >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-ia64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jan 16 00:30:07 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Marcel Moolenaar >Release: 7-CURRENT >Organization: >Environment: FreeBSD bigsur.pn.xcllnt.net 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Fri Jan 13 16:26:27 PST 2006 marcel@bigsur.pn.xcllnt.net:/usr/obj/nfs/freebsd/7.x/src/sys/BIGSUR ia64 >Description: When NO_TLS is *not* defined in src/lib/libc/stdlib/malloc.c on ia64, then a SIGSEGV will result due to arenas_map being thread-local and it being referenced in choose_arena(). That reference causes a thread-local relocation to end up in tls_get_addr_common() in src/libexec/rtld-elf/rtld.c for which the dtvp argument is NULL. This pretty much means that __tls_get_addr() on ia64 does the wrong thing. In this case it assumes that r13 (aka TP) is non-NULL in all cases, which is false for non-threaded applications. >How-To-Repeat: n/a >Fix: tbd >Release-Note: >Audit-Trail: >Unformatted: