From owner-freebsd-hackers@FreeBSD.ORG Tue Aug 13 21:21:09 2013 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id DFDBAF86 for ; Tue, 13 Aug 2013 21:21:09 +0000 (UTC) (envelope-from yuri@rawbw.com) Received: from shell0.rawbw.com (shell0.rawbw.com [198.144.192.45]) by mx1.freebsd.org (Postfix) with ESMTP id CAB0E2659 for ; Tue, 13 Aug 2013 21:21:09 +0000 (UTC) Received: from eagle.yuri.org (stunnel@localhost [127.0.0.1]) (authenticated bits=0) by shell0.rawbw.com (8.14.4/8.14.4) with ESMTP id r7DLL3NR075248 for ; Tue, 13 Aug 2013 14:21:03 -0700 (PDT) (envelope-from yuri@rawbw.com) Message-ID: <520AA33E.1050602@rawbw.com> Date: Tue, 13 Aug 2013 14:21:02 -0700 From: Yuri User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130628 Thunderbird/17.0.7 MIME-Version: 1.0 To: FreeBSD Hackers Subject: Kernel DDB doesn't work in VM ? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Aug 2013 21:21:09 -0000 I have kernel configured with options KDB and DDB. But when kernel panic occurs while running as VBox VM, VBox takes over and says: "A critical error occurred while running the virtual machine", etc. It doesn't drop into DDB. Pressing Ok closes VM, pressing "Ignore" leaves it in hung state. sysctl debug.kdb.enter=1 also causes the above behavior as if panic has occurred. Is it possible to make DDB kick in while running as VM? Yuri