Re: shutdown -p panics on SS10

[David Brownlee <abs%absd.org@localhost>]

On Thu, 22 Jun 2023 at 00:49, vom513 <vom513%gmail.com@localhost> wrote:
>
> > On Jun 9, 2023, at 7:22 PM, vom513 <vom513%gmail.com@localhost> wrote:
> >
> > I’m pretty firmly convinced this is/was a hardware issue with the machine.  I should have another entire SS10 in my hands soon, hopefully will have better/different results there.  Thanks.
>
> So I got the new machine and am getting what seems like the same panics.  A few data points as I try to track down the root cause:
>
> - On the new machine, for various reasons, I ran it on pure console for about a week.  Never started X until today.  When running on pure console, I never experienced the crash.
> - I typically run XDM - but today just to get things going, I simply did a ‘startx’.  Had a panic when shutting down from within X.  So whatever is going on - I don’t think it’s XDM but possibly just X in general.
> - Both of these machines have cgsix fb’s (just boring TGX - 1152x900x8bp).
> - My SS20 has SX/cgfourteen FB (8mb VSIMM, 1280x1024x24bp).  Never have this behavior over there.  SS20 and the SS10s are all running 9.3, and otherwise as similar as possible.
>
> So far it seems like the trigger is doing a ‘shutdown -h/-p now’ from inside an xterm.
>
> I’m going to disable xdm, and see what the behavior is if I exit the WM, drop to console, and shutdown from there.
>
> If I get panics there - I’d say it’s something to do with X having been running.
>
> If I don’t - I’d say it’s something to do with shutting the system down *while* X is running.
>
> So in summary, I no longer think this is hardware related as it’s happened on 2 different but similar machines.
>
> Any other ideas of things I should try to isolate this and the cause ?  Should I open a PR ?

Definitely open a PR, with the details from the panic. Testing after
shutting down X would be a good data point. It might be interesting to
see if the cg6 has the same issue in the ss20, but I'd probably defer
that for now on the principle of testing things without unplugging and
replugging sbus cards first :)

Would it be easy to test a netbsd-10 kernel on one of the ss10s?
probably start by just extracting a sparc kernel from
http://nyftp.netbsd.org/ a /netbsd10 (plus the modules set which
extracts into pathnames containing os release version so will not
overwrite the netbsd-9 files)

David