Re: GGI and cli/sti in X

Gerhard Mack (gmack@imag.net)
Sat, 28 Mar 1998 15:36:40 -0800 (PST)

On Sat, 28 Mar 1998, Alan Cox wrote:

> > I get 5 or 6 ughs everytime somone runs X onmy system so I'd say your
> > correct, the ughs are allways in do_page_fault. The ughs are normal on
> > any system I've seen with < 16 megs ram. The every once and a while
>
> The "Ugh" is logging the fact someone attempted to handle a page fault while
> having interrupts disabled. This is an extremely bad thing. There are two causes
>
> 1. Incorrect kernel code (I think most of these are now dead)
> 2. Some user process as root which has the misguided idea it can disable
> interrupts after using the iopl() syscall. Well it can't. Not unless
> its prepaged everything it needs and mlock()'d those pages
>
> so its either a kernel or an X bug.

Well the ughs seem to happen every thime somone changes consoles. I'd bet
on an X bug. 

--
Gerhard Mack
gmack@imag.net
innerfire@starchat.net


As a computer I find your faith in technology amusing. 




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