From owner-freebsd-stable@FreeBSD.ORG Fri Oct 22 17:28:21 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 65FC7106566B; Fri, 22 Oct 2010 17:28:21 +0000 (UTC) (envelope-from seanbru@yahoo-inc.com) Received: from mrout1.yahoo.com (mrout1.yahoo.com [216.145.54.171]) by mx1.freebsd.org (Postfix) with ESMTP id 2D0C48FC16; Fri, 22 Oct 2010 17:28:20 +0000 (UTC) Received: from [127.0.0.1] (cheese.corp.yahoo.com [216.145.50.99]) by mrout1.yahoo.com (8.14.4/8.14.4/y.out) with ESMTP id o9MHQgQB009505; Fri, 22 Oct 2010 10:26:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=yahoo-inc.com; s=cobra; t=1287768402; bh=Wp7xV5vsz20SKKHwuaCcJ/HtEtvmGWOxCye0baG64ec=; h=Subject:From:To:Cc:In-Reply-To:References:Content-Type:Date: Message-ID:Mime-Version:Content-Transfer-Encoding; b=A7zvqRZe6gHQC2M6Wx29FI1lbVNvMpN9/M4k0VoD+jUol+pEt8Ls2mpUfzy1JalHZ /Y1Xh7RdoI0uORC6AU4MKKKdznHTQ5FdYsZI5Uw0cJbc8NdnTJqGJJDiX80do5a+BB WwpBn1A4I4JQDDRBW48LCWT71s4kQgUs0G6Hg3Yk= From: Sean Bruno To: Ivan Voras In-Reply-To: References: <20101019031144.GA68635@stlux503.dsto.defence.gov.au> <4CBD2997.5090508@icyb.net.ua> <201010190901.06279.jhb@freebsd.org> <1287597910.2600.5.camel@home-yahoo> <4CBF30E5.6080705@icyb.net.ua> <1287598579.2600.10.camel@home-yahoo> <4CBF3307.3040206@icyb.net.ua> <1287599301.2600.12.camel@home-yahoo> <4CC036BA.1020802@icyb.net.ua> <1287679803.3336.3.camel@home-yahoo> <20101021190631.GZ2392@deviant.kiev.zoral.com.ua> Content-Type: text/plain; charset="UTF-8" Date: Fri, 22 Oct 2010 10:26:41 -0700 Message-ID: <1287768401.4080.1.camel@home-yahoo> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 (2.28.3-1.fc12) Content-Transfer-Encoding: 7bit Cc: "freebsd-stable@freebsd.org" Subject: Re: kpanic on install >32GB of RAM [SEC=UNCLASSIFIED] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Oct 2010 17:28:21 -0000 On Fri, 2010-10-22 at 02:46 -0700, Ivan Voras wrote: > On 10/21/10 21:06, Kostik Belousov wrote: > > On Thu, Oct 21, 2010 at 09:50:03AM -0700, Sean Bruno wrote: > >> On Thu, 2010-10-21 at 05:48 -0700, Andriy Gapon wrote: > >>> on 20/10/2010 21:28 Sean Bruno said the following: > >>>> I guess, I could replace the kernel on the CD and have them reburn it? > >>> > >>> That should work. > >>> BTW, here I described "yet another" way of building custom recovery/installation > >>> CDs that I use: > >>> http://wiki.freebsd.org/AvgLiveCD > >>> > >> > >> Before I get started on this, it looks like something else is going on. > >> > >> Here is a panic + trace on the latest 9-current snap shot. "hammer > >> time" indeed. > >> > >> Suggestions are welcome! > >> > >> > >> http://people.freebsd.org/~sbruno/9-current-panic.png > >> > >> http://people.freebsd.org/~sbruno/9-current-trace-panic.png > > > > It feels like msgbufp variable has absurd value. Can you arrange > > to get the output of verbose boot, esp. the SMAP lines ? > > This is probably completely wrong for this problem but in the tiny case > it isn't, maybe it will give someone an idea: I remember in the old > times (tm) that there was a trick by which the msgbuf is supposed to be > preserved across soft reboots. I don't know the details, and it might > just be valid for i386 but part of that deal could be that some code > tries to parse that memory area for valid msgbuf and due to some > garbage, fails with such a panic. Strange you should mention this. Peter@ and I just had a 30 minute driveway conversation about just this issue. Sean