From owner-freebsd-questions@FreeBSD.ORG Wed Feb 11 14:06:28 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DC19B106564A for ; Wed, 11 Feb 2009 14:06:28 +0000 (UTC) (envelope-from laladelausanne@gmail.com) Received: from mail-ew0-f21.google.com (mail-ew0-f21.google.com [209.85.219.21]) by mx1.freebsd.org (Postfix) with ESMTP id 6D9158FC12 for ; Wed, 11 Feb 2009 14:06:28 +0000 (UTC) (envelope-from laladelausanne@gmail.com) Received: by ewy14 with SMTP id 14so191511ewy.19 for ; Wed, 11 Feb 2009 06:06:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to :content-type:content-transfer-encoding:mime-version:subject:date :x-mailer; bh=aBzvUVvaHIxigmkDePCRipiXPfhfNhhfoibMZF2MTVc=; b=WJLbMetsMarq8JwotVhKOyekYLVLV07fNRI09RV/QwreLskDlmETDjwmVsgGWYFeVU T6Jfcue2oDB1kXwrotwc66MfgFtchOYAnhXlJatv7cgS+fNfIJZ03tZF0CXsh7eS1dwu YkazB0FrvAhfJarp9t0EpuMvZEpnxDmOSfW4g= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date:x-mailer; b=m1yoWqPBfY/hWnIb/EqjLjWiQ7gGQv0nRL5hMgRXaNipW1IwKFpdmmU6+DQ70wwJaG Ps+c9itX3l1B0xQGchtP1VEyxlCCGBbG4Vmg1Wf34YN0AKshPdlEGMMYP/7vyUkvY1yB nCxQtpCKAUGG66LUEK1xInRgUJIQE5CJejEr8= Received: by 10.210.61.11 with SMTP id j11mr605147eba.119.1234359931505; Wed, 11 Feb 2009 05:45:31 -0800 (PST) Received: from nslpc5.epfl.ch (nslpc5.epfl.ch [128.178.149.20]) by mx.google.com with ESMTPS id 1sm2080335nfv.30.2009.02.11.05.45.30 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 11 Feb 2009 05:45:30 -0800 (PST) Message-Id: From: =?UTF-8?Q?Nikola_Kne=C5=BEevi=C4=87?= To: FreeBSD Questions Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Date: Wed, 11 Feb 2009 14:45:29 +0100 X-Mailer: Apple Mail (2.930.3) Subject: Cannot access memory at address 0xb X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Feb 2009 14:06:29 -0000 Hi, my 8-core amd64 machine crashes when I'm trying to run my module. The problem is that I can't debug it, since core dump is broken. ---8<--- GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"... Cannot access memory at address 0xb (kgdb) bt #0 0x0000000000000000 in ?? () Cannot access memory at address 0x0 (kgdb) --->8--- I can obtain correct coredumps when I'm running everything inside QEMU, but not when I'm running on a real machine. Also, panic doesn't occur inside QEMU :( Any hints? Cheers, Nikola