Linux-kernel mailing list archive 1997-47,: Re: Ugh again (2.1.65)

# Re: Ugh again (2.1.65)

Bill Hawes (whawes@star.net)
Wed, 26 Nov 1997 19:15:38 -0500

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David E. Fox wrote:

> As far as I can tell, I wasn't doing much of anything that would
> cause either of the "Ugh" messages; someone was kind enough to
> forward a message from Linux on this topic. The first time I might
> have been running netscape, the second I was just reading mail
> with elm, and I also latexed a file, and viewed it with
> xdvi. Not a whole lot else was running:

Ugh messages are caused by improperly written drivers that do a
copy_xx_user with interrupts turned off. If the copy causes a page
fault, you get an ugh. Some of the serial drivers, ppp, isdn, etc. have
this problem.

What should you do? Figure out which driver is causing the problem, and
ask the maintainer to fix it. (Or fix it yourself, of course.)

Regards,
Bill

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