Date: Sat, 7 Dec 2002 08:58:26 -0500 (EST) From: Robert Watson <rwatson@FreeBSD.ORG> To: Kris Kennaway <kris@obsecurity.org> Cc: Lars Eggert <larse@ISI.EDU>, current@FreeBSD.ORG, jhb@FreeBSD.ORG, alfred@FreeBSD.ORG Subject: Re: LOR: filedesc structure -> pipe mutex Message-ID: <Pine.NEB.3.96L.1021207085646.9402G-100000@fledge.watson.org> In-Reply-To: <20021207043355.GA75597@rot13.obsecurity.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 6 Dec 2002, Kris Kennaway wrote: > On Fri, Dec 06, 2002 at 07:18:03PM -0800, Lars Eggert wrote: > > > >I'm getting this too: > > After discussing this with various people on IRC, it was determined that > this is not the place where the reversal is occurring, but since witness > doesn't have the lock order defined it has to guess, and in this > instance it is guessing the wrong way around. After adding the lock > order to subr_witness.c I now get this: Yeah, we're exchanging some out-of-band e-mail on this: the basic problem is that: filedesc>pipe pipe>sigio sigio>proc proc>filedesc We're talking about some possible solutions, including deferred signalling, etc, etc. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.NEB.3.96L.1021207085646.9402G-100000>