From owner-freebsd-stable@freebsd.org Sun Apr 1 22:00:08 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C195FF7ED0F for ; Sun, 1 Apr 2018 22:00:08 +0000 (UTC) (envelope-from lists@knigma.org) Received: from shrewd.pub.knigma.org (shrewd.ipv6.pub.knigma.org [IPv6:2001:8b0:b0:1::1]) (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 438867FCD0 for ; Sun, 1 Apr 2018 22:00:08 +0000 (UTC) (envelope-from lists@knigma.org) Received: from dhcp13.wireless.knigma.org (localhost [127.0.0.1]) (authenticated bits=0) by shrewd.pub.knigma.org (8.15.2/8.15.2) with ESMTPSA id w31M059K007068 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Sun, 1 Apr 2018 23:00:05 +0100 (BST) (envelope-from lists@knigma.org) To: freebsd-stable@freebsd.org Reply-To: markk@knigma.org From: Mark Knight Subject: FreeBSD 10.4 kernel breaks on i7-7700 / PRIME H270M-PLUS Message-ID: Date: Sun, 1 Apr 2018 23:00:05 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.6.2 (shrewd.pub.knigma.org [127.0.0.1]); Sun, 01 Apr 2018 23:00:05 +0100 (BST) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Apr 2018 22:00:08 -0000 I'm trying to do the usual src code upgrade from FreeBSD 10.3 to 10.4, as I've done many times before with earlier version bumps. However, for some reason the 10.4 kernel seems to break my system, either with the 10.3 or 10.4 userland. The main issue seems to be some sort of deadlock. For example, on the console, following boot (which seems fairly normal) I can login to the console as root, but when I try to use commands like su or sudo to switch to another user, that command hangs and at that point CTRL-C is useless: I have to switch to another tty. Trying to login via ssh over the network also fails but neither case gives me any obvious clues in logs. If I switch back to a 10.3 kernel sanity is restored. Not sure if it's related, but on boot I see these new errors that weren't present on 10.3: > [1] ACPI Error: Mutex [0x0] is not acquired, cannot release (20160527/utmutex-386) > [1] ACPI Error: Could not release AML Interpreter mutex (20160527/exutils-147) > [1] ACPI Error: Mutex [0x0] is not acquired, cannot release (20160527/utmutex-386) > [1] ACPI Error: Could not release AML Interpreter mutex (20160527/exutils-147 I've dumped the kernel boot log here: http://www.knigma.org/scratch/010418.10.4.txt I'm struggling to pin down the cause, so I'm hoping this mail might jog a memory or provide a pointer please? Motherboard is a PRIME H270M-PLUS with the latest BIOS. Thanks!! -- Mark Knight