Re: Sporadious hang on 2.0.3[0,1,2,3,4pre2]

Camm Maguire (camm@enhanced.com)
11 Mar 1998 09:30:25 -0500


nobody@REPLAY.COM (Anonymous) writes:

>
> please@dont.spam.me wrote:
>
> > Daniel Ryde wrote:
> > >We have many servers here running 2.0.3x kernels. Most of these don't have
> > >any problems at all, it is very seldom these hangs, even those under heavy
> > >load. Exept all the terminal servers.
> > >
> > >The difference between these is:
> > > They mostly run ppp, sometimes slip
> > > They use many serial ports
> > > They do "slow" forwarding
> > > They handle alot of interrups
> >
> > There was (is?) a race condition in some versions of the ppp driver, whereby
> > two pppds could both open the same port. What would happen is that one
> > process would close the port and set the speed to zero while another process
> > was writing data into it. This would put the kernel into a dead loop.
> >
> > I thought this bug had long ago been fixed, but it seems it hasn't...
>
> The bug was in 2.0.30. Below is a message describing it:
>
>

By the way, this appears to be precisely what I experienced in the
xntpd -d crash in 2.0.33 I posted a while ago. When I get a chance,
I'll try the script and see if that is the culprit in my case.

Take care,

-- 
Camm Maguire			     			camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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