[vox-tech] kernel oops resulting in hung processes.

[Ryan Castellucci]

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On Wednesday 12 February 2003 11:52 am, Troy Arnold wrote:
> On Wed, Feb 12, 2003 at 10:51:20AM -0800, Peter Jay Salzman wrote:
> > begin Ryan Castellucci <ryan+lugod@cal.net>
> > > This is not the first time this has happened, but it's really start=
ing
> > > to bug me.
> > >
> > > sda is sometimes a USB device, was not plugged in at the time.
> > >
> > > Anyone know where things went wrong here?
> > >
> > > This error resulted in processes getting hung in the 'D' state (as
> > > reported by top)
> > >
> > > I ended up having to reboot. Any ideas?
> >
> > why not disable devfs and see if this happens again?
> >
> > also, see:
> >
> > /usr/src/linux-2.4.20/Documentation/oops-tracing.txt
> >
> > and why did you reboot?  because of a few processes in the D state?
>
> Once you see this:
> > > Feb 12 04:22:44 windy kernel: Unable to handle kernel paging reques=
t
> > > at virtual address 3a2061a8
> > > Feb 12 04:22:44 windy kernel:  printing eip:
>
> You're hosed.  Time to reboot.
>
> Ryan, what kind of device is this?  What kernel are you running?
> You might check the kernel Changelogs for anything pertaining to your
> device.  There have been plenty of usb updates in recent months.

I'm running 2.4.18-8.1mdk, an updated kernel for Mandrake 8.2

The usb device is a Compact Flash reader/writer (USB Mass Storage), but i=
t=20
hadn't been plugged in for days, and I'd properly unmounted it.

Does the paging error have anything to do with swap? Swap is one interest=
ing=20
thing about my setup...... I'm running swap on an encrypted loopback=20
partition.

# swapoff -s
Filename                        Type            Size    Used    Priority
/dev/loop/3                     partition       1602208 200     -1
# losetup /dev/loop/3
/dev/loop/3: [0007]:454 (/dev/hda3) offset 0, AES128 encryption

If this is indeed swap related, I can disable the swap encryption, since =
I=20
really don't need the security.

- --=20
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