From owner-freebsd-current@freebsd.org Tue Jan 16 03:46:23 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A9220E6F676 for ; Tue, 16 Jan 2018 03:46:23 +0000 (UTC) (envelope-from pete@nomadlogic.org) Received: from vps-mail.nomadlogic.org (mail.nomadlogic.org [IPv6:2607:f2f8:a098::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 92CA8828F8 for ; Tue, 16 Jan 2018 03:46:23 +0000 (UTC) (envelope-from pete@nomadlogic.org) Received: from [192.168.1.26] (cpe-23-242-94-236.socal.res.rr.com [23.242.94.236]) by vps-mail.nomadlogic.org (OpenSMTPD) with ESMTPSA id 0ee6acad TLS version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO for ; Mon, 15 Jan 2018 19:45:57 -0800 (PST) Subject: [SOLVED] Re: Kernel Panic On Boot after r327979 From: Pete Wright To: freebsd-current@freebsd.org References: Message-ID: <76287df0-9f92-d23b-dac7-97daeb11d584@nomadlogic.org> Date: Mon, 15 Jan 2018 19:46:22 -0800 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jan 2018 03:46:23 -0000 On 01/15/2018 09:26, Pete Wright wrote: > Hello, > > I updated an amd64 system last night to r327979 and it panics into gdb > after rc attempts to mount local filesystems. > > The panic line is: > Fatal trap 12: page fault while in kernel mode > > gdb states that it stopped at: > Stopped at    prison_allow+0x4    movq    0x30(%rdi),%rax > > > Is this a known issue?  This is my primary workstation - so I'm going > to revert back to an older kernel, but if more info is needed I can > put some cycles into debugging today. > closing the loop on this.  it looks like the panic was due to debugfs being mounted on my system.  debugfs is part of the drm-next-kmod port which enables i915 gfx on recent intel GPU's, and debugfs doesn't *need* to be mounted but is quite useful and fun to play with. anywho - the fix on my end is to: - remove the drm-next-kmod port/pkg - build and install latest kernel+world - reboot and build/install the drm-next-kmod port/pkg - reboot and enjoy i915 graphics i'm kinda interested in what prison_allow does now as i haven't run across it before.  is this part of the jails infrastrucutre? cheers, -p -- Pete Wright pete@nomadlogic.org @nomadlogicLA