Subject: Re: MMU trap panic? Weird coincidences continue
To: None <,,>
From: Gordon W. Ross <>
List: port-sun3
Date: 03/25/1996 17:28:53
> Date: Mon, 25 Mar 1996 12:35:08 -0800 (PST)
> From: Curt Sampson <>

> > From: Brett Glass <>
> > To: Jari Kokko <>, port-sun3@NetBSD.ORG
> > Subject: MMU trap panic? Weird coincidences continue
> > 
> > Sounds like you're getting all the errors and bugs I got. Especially with
> > serial ports....
> Gwr just mentioned that a bug in PPP that could cause that sort of
> thing had been fixed recently. I can bang on my machine quite hard,
> but so far I've only ever had the crash (and I had it about six
> times yesterday) when I've got pppd running and I'm doing a sup.
> Actually, gwr didn't mention whether the bug was in pppd or in the
> kernel. At any rate, I'm busy upgrading to -current, and I should
> be able to try out the latest system in a couple of days.
> cjs

Actually the relevant bug in this case was in the new zs driver.
I tried to use the t_sc member of the tty struct, which is used
by ppp or slip, resulting in wild pointer references.  Ouch!

There was also a recent pppd bug fixed, but that should not
affect the kernel.  (Sorry for the mis-placed blame.)