From owner-freebsd-current@FreeBSD.ORG Wed Feb 20 22:56:52 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id C9FB9F94 for ; Wed, 20 Feb 2013 22:56:52 +0000 (UTC) (envelope-from nparhar@gmail.com) Received: from mail-pb0-f53.google.com (mail-pb0-f53.google.com [209.85.160.53]) by mx1.freebsd.org (Postfix) with ESMTP id 97323FDE for ; Wed, 20 Feb 2013 22:56:52 +0000 (UTC) Received: by mail-pb0-f53.google.com with SMTP id un1so3129017pbc.40 for ; Wed, 20 Feb 2013 14:56:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=NS2WMAZ4LmtMgZ7yjKzeX7cHVZeb54YpGIhPVwvBJfQ=; b=rAdizSBw7HZkRDQzLiCbpW9VPXzUFStb8rrBbrb4pf2uY8cj/Sj8JClnCJfQauhl21 VYzCzFR7E4Va6Ysmn1pM/9GqycRUUhPFRJ7btrVTvBzIVcnKoMYjXMbPn6ndcwBWWXJR qT7xTWuDLehgx+2QssbJNj9VeWPovhO6mHXrdqo+H5Mdohmib5uO3hHvdx8UxdJ0yF9+ EO4xG/0+JHRUmIwbxYULm5YfJMoD4oRFvlu3aclNvSRKZa6uVzObdckj5DR2xQ8Sw/V0 CHIdXChJC4C5KxIFwrhGiB3AvgGnKTFCnQcX0uYI5Ak09nqej41DBPEnSmVkJ4Novffj NJuQ== X-Received: by 10.68.17.104 with SMTP id n8mr35249088pbd.18.1361401012093; Wed, 20 Feb 2013 14:56:52 -0800 (PST) Received: from [10.192.166.0] (stargate.chelsio.com. [67.207.112.58]) by mx.google.com with ESMTPS id hs8sm22993096pbc.27.2013.02.20.14.56.50 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 20 Feb 2013 14:56:51 -0800 (PST) Message-ID: <512554B2.3070601@gmail.com> Date: Wed, 20 Feb 2013 14:56:50 -0800 From: Navdeep Parhar User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130220 Thunderbird/17.0.3 MIME-Version: 1.0 To: Konstantin Belousov Subject: Re: -CURRENT userland regression References: <51254ACE.2030100@delphij.net> <51254C7E.9050705@gmail.com> <20130220222518.GT2598@kib.kiev.ua> <51254F33.5060904@gmail.com> <20130220224732.GV2598@kib.kiev.ua> In-Reply-To: <20130220224732.GV2598@kib.kiev.ua> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Xin Li , FreeBSD Current , d@delphij.net X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Wed, 20 Feb 2013 22:56:52 -0000 On 02/20/13 14:47, Konstantin Belousov wrote: > On Wed, Feb 20, 2013 at 02:33:23PM -0800, Navdeep Parhar wrote: >> On 02/20/13 14:25, Konstantin Belousov wrote: >>> On Wed, Feb 20, 2013 at 02:21:50PM -0800, Navdeep Parhar wrote: >>>> On 02/20/13 14:14, Xin Li wrote: >>>>> Hi, >>>>> >>>>> It seems that fresh -HEAD would give an unusable kernel that >>>>> overwrites screen buffer in a way making it impossible to debug. >>>>> Using an old world source to do 'make buildworld buildkernel' results >>>>> in a (mostly: I have some strange USB issue right now and still >>>>> looking for the cause) usable kernel. >>>>> >>>>> For now my known good combination is world 246858 with kernel 247057. >>>>> I'm still trying to find out which revision have broke the stuff. >>>> >>>> I ran into this earlier today. Selecting "safe mode" in the boot loader >>>> menu seems to work around the problem on my system. Now I will not >>>> reboot until I see a fix for this in head :-) >>> >>> How much 'the earlier today' is ? >>> I.e., could you specify some revisions ? >>> >> >> I upgraded from a month old (approx.) head to r247054 and ran into this >> problem. I haven't tried bisecting as I need a running system right now. > > BTW, does the loader fails, or is it the kernel where the problems start > appearing ? > The problem occurs well after the kernel is up and running. The last messages that were readable were from ugen/uhub and ada0. The rest was garbled and the system froze solid something after that. I tried pinging it but it wasn't reachable so this wasn't a case where the console was trashed but system was running. This is amd64 built with clang. I have dual consoles - serial and VGA. FreeBSD trantor 10.0-CURRENT FreeBSD 10.0-CURRENT #26: Wed Feb 20 13:18:48 PST 2013 root@trantor:/usr/obj/usr/src/sys/TOEKTR amd64 Regards, Navdeep