Re: FreeBSD 5.1-R kernel panic
From: Stephane Raimbault (segr_at_hotmail.com)
Date: 07/30/03
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To: "Bosko Milekic" <bmilekic@technokratis.com> Date: Wed, 30 Jul 2003 09:25:34 -0600
Hi Bosko,
My kernel panic'd again this morning. I had removed all the USB devices
from my kernel and had set my /etc/rc.conf to usbd_enable="NO" and the
kernel panic'd again.
I have attached both my kernel config file and the trace of the panic. Let
me know if I can provide any further information to help analyze this
problem.
Thanks,
Stephane Raimbault.
----- Original Message -----
From: "Bosko Milekic" <bmilekic@technokratis.com>
Newsgroups: mailing.freebsd.current
Sent: Sunday, July 27, 2003 8:56
Subject: Re: FreeBSD 5.1-R kernel panic
>
> On Sat, Jul 26, 2003 at 10:48:21PM -0600, Stephane Raimbault wrote:
> > Well, I had compiled "options DDB" into the kernel and today the kernel
> > panic'd... here is what I got. I ran the following in the db> prompt.
> > "trace", "show reg", "ps". Let me know if this is the kind of
information
> > you need, and if there is anything else I need to provide... can I
> > re-compile the kernel without the "options DDB" now, or should I provide
the
> > same info next time in panic's to confirm it's the same problem?
> >
> > Thanks,
> > Stephane.
> >
> > I've attached the file debug.txt which contains the panic info. Let me
know
> > if you need it in a different format.
> >
> > Thanks again,
> > Stephane Raimbault.
>
> Are you using USB?
>
> Approximately 2 weeks ago, some changes were introduced into the USB
> code which could in some scenarios mean a depletion of kmem_map. I've
> glanced at usb_mem.c and it appears that the USB code 'caches'
> everything that it allocates into a couple of lists it maintains
> locally. This prevents UMA from seeing the freed memory and, from the
> point of view of the VM, the memory is never reclaimed.
>
> I am unsure as to whether or not the memory allocated by the USB stuff
> needs to be type stable so I can't really fix this. I urge the USB
> authors to glance there.
>
> If you are using USB, try turning it off to see if the panic persists.
> If not, then we'll have to look elsewhere.
>
> Regards,
> --
> Bosko Milekic * bmilekic@technokratis.com * bmilekic@FreeBSD.org
> TECHNOkRATIS Consulting Services * http://www.technokratis.com/
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- text/plain attachment: debug2.txt
- text/plain attachment: kernel.txt
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