FreeBSD 5.1-R kernel panic
segr at hotmail.com
Sun Jul 27 12:01:27 PDT 2003
Thanks for your response. I do not use USB on the system... I'll try
removing those devices from the kernel and see if the problem continues.
I will let you know.
----- Original Message -----
From: "Bosko Milekic" <bmilekic at technokratis.com>
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
> > 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
> > 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
> > 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.
> Bosko Milekic * bmilekic at technokratis.com * bmilekic at FreeBSD.org
> TECHNOkRATIS Consulting Services * http://www.technokratis.com/
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