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Date:      Sun, 26 May 2002 15:19:43 -0700
From:      Alfred Perlstein <bright@mu.org>
To:        Jay <jayed@jayed.com>
Cc:        Giorgos Keramidas <keramida@ceid.upatras.gr>, freebsd-current@freebsd.org
Subject:   Re: Messages from WITNESS [Sun May 26 kernel]
Message-ID:  <20020526221943.GC43189@elvis.mu.org>
In-Reply-To: <200205261703.22969.jayed@jayed.com>
References:  <20020526123701.GA1512@hades.hell.gr> <200205261703.22969.jayed@jayed.com>

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* Jay <jayed@jayed.com> [020526 15:07] wrote:
> On Sunday 26 May 2002 07:37 am, Giorgos Keramidas wrote:
> > A kernel with WITNESS enabled, compiled last night prints the
> > following to my console every now and then:
> >
> > /usr/src/sys/vm/uma_core.c:1324: could sleep with "process lock" locked
> > from /usr/src/sys/kern/kern_prot.c:511 /usr/src/sys/vm/uma_core.c:1324:
> > could sleep with "process lock" locked from
> > /usr/src/sys/kern/kern_prot.c:613
> >
> > - Giorgos
> 
> This is due to the latest rev of uma_core.c that jhb committed.  This commit 
> reveals "possible brokenness".  (In what, I can't tell you, but, hey, I 
> believe John).
>  
> http://www.FreeBSD.org/cgi/getmsg.cgi?fetch=535626+539491+/usr/local/www/db/text/2002/cvs-all/20020526.cvs-all
> 
> Other people have mentioned this on the list in the past few days.  I myself 
> am suffering from "UMA lock" "rl0" and a variety of "pcm" messages myself.  
> All I can say is that it hasn't seemed to hurt anything for me.

Uh, why don't you guys enable 'debug.witness_ddb' and get us some
tracebacks? :)

-- 
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
 start asking why software is ignoring 30 years of accumulated wisdom.'
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