Re: BUG: unable to handle kernel paging request at virtual address

[Al Viro <viro@ZenIV.linux.org.uk>]

On Sat, Jan 05, 2008 at 06:46:56PM +0400, Alexander Shaduri wrote:
> On Sat, 5 Jan 2008 15:34:25 +0100
> Mikael Pettersson <mikpe@it.uu.se> wrote:
> 
> > This kernel is tainted by the nvidia module...
> 
> I know that, but as I wrote in the original message, the hangs occur
> without it too.
> I just tested it today. Had to leave it running
> (in vesa framebuffer mode), without any nvidia modules.
> Crash occurred after 4 hours of tv capturing, and didn't leave
> any traces in dmesg logs (logged every second).
> Unfortunately, I couldn't save any messages.
> 
> All I'm saying is that the problem is reproduceable without
> nvidia module and without any X server running.

Get a serial console?  Take another box, plug e.g. pl2303-based
usb-to-serial (several bucks these days) into it, stick null-modem
convertor (ditto) on its serial end and attach to ttyS0 on the
victim.  console=ttyS0 on victim, something like minicom on watcher
and tell it to capture log into file...