Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 17 Mar 2002 12:08:54 -0500 (EST)
From:      Robert Watson <rwatson@FreeBSD.ORG>
To:        Alfred Perlstein <bright@mu.org>
Cc:        Munehiro Matsuda <haro@h4.dion.ne.jp>, tanimura@r.dl.itc.u-tokyo.ac.jp, phk@FreeBSD.ORG, hitmaster2k@yahoo.com, current@FreeBSD.ORG, smp@FreeBSD.ORG
Subject:   Re: -current lock warning...
Message-ID:  <Pine.NEB.3.96L.1020317120811.965J-100000@fledge.watson.org>
In-Reply-To: <20020317163953.GY4857@elvis.mu.org>

next in thread | previous in thread | raw e-mail | index | archive | help

On Sun, 17 Mar 2002, Alfred Perlstein wrote:

> * Munehiro Matsuda <haro@h4.dion.ne.jp> [020317 06:36] wrote:
> > 
> > PS. I got another message that happend when I ^C'ed a buildworld earlier, 
> > with same kernel. May be it should go to Alfred Perlstein?
> > 
> > lock order reversal
> >  1st 0xc198eec0 pipe mutex @ ../../../kern/sys_pipe.c:779
> >  2nd 0xc0367fe0 Giant @ ../../../i386/i386/trap.c:716
> 
> I think there's a place where the pipe can fault on an address while
> copying, I'll take a look at this. 

Are there any assertions that should be in place for copyin/copyout
requring fault handling?  It sounds like somewhere we need to assert that
Giant is held...

Robert N M Watson             FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org      NAI Labs, Safeport Network Services



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-smp" 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.1020317120811.965J-100000>