Date: Tue, 17 Apr 2007 22:05:23 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Tillman Hodgson <tillman@seekingfire.com> Cc: current@freebsd.org Subject: Re: Panic on boot with April 16 src (lengthy info attached) Message-ID: <20070417220339.E2913@fledge.watson.org> In-Reply-To: <20070417181627.GA1225@seekingfire.com> References: <20070417153357.GA1335@seekingfire.com> <20070417173005.O42234@fledge.watson.org> <20070417181627.GA1225@seekingfire.com>
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On Tue, 17 Apr 2007, Tillman Hodgson wrote: > On Tue, Apr 17, 2007 at 05:32:32PM +0100, Robert Watson wrote: > >> There's quite a bit of stuff in here, but I can speak to this one: Andre's >> recent TCP timer change causes TCP to run without Giant when >> debug.mpsafenet=0. This leads to panics with INVARIANTS, and non-MPSAFE >> code running without Giant otherwise. > > Thanks Robert, that did indeed let me boot. I appreciate your help :-) > > I originally put it in there to work around a LOR that I was experiencing > (based on you mentioning it in an email to current@ Sun 18 Mar 2007 15:50). > http://sources.zabbadoz.net/freebsd/lor/191.html doesn't show any changes to > that particular LOR, do you happen to know if there's any ongoing work on > this? I'm very willing to act as a test system. I chatted with Andre about the panic earlier this afternoon, and it sounds like the fix is straight forward. I would anticipate seeing it committed in the near future. I'll send out an e-mail explaining the above lock order reversal tomorrow morning. I understand that several people have been looking at this, so perhaps one of those people will reply talking about it before then. :-) Robert N M Watson Computer Laboratory University of Cambridge
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