Date: Mon, 10 Jan 2005 13:51:04 -0500 From: Bosko Milekic <bmilekic@technokratis.com> To: Peter Holm <peter@holm.cc> Cc: current@freebsd.org Subject: Re: panic: uma_zone_slab is looping Message-ID: <20050110185104.GA22091@technokratis.com> In-Reply-To: <20041228135339.GA80377@technokratis.com> References: <20041220234103.GA59225@technokratis.com> <20041222210553.GA28108@peter.osted.lan> <20041222221540.GA70052@technokratis.com> <20041226161153.GA74592@peter.osted.lan> <20041226181738.GA21533@technokratis.com> <20041226225651.GA87178@peter.osted.lan> <20041227013745.GA5267@technokratis.com> <20041227040216.GA44588@technokratis.com> <20041228084731.GA766@peter.osted.lan> <20041228135339.GA80377@technokratis.com>
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Peter,
Any updates? should I commit the fix I sent you?
-Bosko
On Tue, Dec 28, 2004 at 08:53:39AM -0500, Bosko Milekic wrote:
>
> On Tue, Dec 28, 2004 at 09:47:31AM +0100, Peter Holm wrote:
> > On Sun, Dec 26, 2004 at 11:02:16PM -0500, Bosko Milekic wrote:
> > > > I'll have to reserve some more time to think about this. One way I
> > > > think it might be solvable would be to change that check that
> > > > triggers the NULL return explicitly check for the bucketzone, and not
> > > > for all UMA_ZONE_INTERNAL zones; I need to think this through a little
> > > > more.
> > >
> > > Please try the attached patch and let me know if with it you can or
> > > cannot trigger the original (seemingly infinite) looping. Although I
> > > still haven't quite figured out how the described scenario could lead
> > > to infinite looping exactly (I did conclude that it could lead to some
> > > looping, though), the patch is worth trying as I believe the scenario
> > > *could* occur.
> > >
> >
> > After more than 18 hours of testing with your patch I ran into a
> > (unrelated ?) "panic: mutex vm object not owned":
> > http://www.holm.cc/stress/log/freeze06.html
>
> Your other (private) Email to me mentions that another developer has
> claimed this one. If/when he fixes it, it would be worthwhile to give
> it another consecutive 18 hours before we decide that "yes, it's good
> and it works." I am optimistic, but we have to be thorough.
>
> Good work, so far!
>
> Cheers,
> --
> Bosko Milekic
> bmilekic@technokratis.com
> bmilekic@FreeBSD.org
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--
Bosko Milekic
bmilekic@technokratis.com
bmilekic@FreeBSD.org
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