NetBSD/sgimips 10.0 RELEASE on SGI Challenge S: INSTALL32_IP2x works, GENERIC32_IP2x kernel panics on boot after install

Hi all,

I’m hoping someone can help—

I've bricked my SGI Challenge S server after deciding to upgrade it to 10.0 yesterday (was running NetBSD 5.0 (GENERIC32_IP2x) #0: Mon Apr 27 06:08:08 UTC 2009).

I got through the installation just fine (after workaround around a problem with lack of `chflags` in the installation image), but after rebooting, the system now panics every time; I’ve filed this problem report:

	https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=58269

What I filed in the problem report is actually using the ecoff kernel variant. For some reason, the ELF variant panics much earlier, though prior to this upgrade I was using the ELF variant with NetBSD 5.0:

> NetBSD/sgimips 10.0 Bootstrap, Revision 1.5 (Thu Mar 28 08:33:33 UTC 2024)                                                                                            
>                                                                                                                                                                       
> devopen: scsi(0)disk(3)rdisk(0)partition(0) type scsi file netbsd-GENERIC32_IP2x                                                                                      
> 5004432+126464 [270656+264073]=0x567868                                                                                                                               
> Starting at 0x88069000                                                                                                                                                
>                                                                                                                                                                       
> nsym 0x1 ssym 0x88544a90 esym 0x885c7868                                                                                                                              
>                                                                                                                                                                       
> Exception: <vector=UTLB Miss>                                                                                                                                         
> Status register: 0x2<IPL=8,MODE=KERNEL,EXL>                                                                                                                           
> Cause register: 0x30008008<CE=3,IP8,EXC=RMISS>                                                                                                                        
> Exception PC: 0x0, Exception RA: 0x882e3c0c                                                                                                                           
> exception, bad address: 0x0                                                                                                                                           
>   Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):                                                                                                       
>   arg: a8740000 5f 0 2                                                                                                                                                
>   tmp: a8740000 88510000 2764 41ff 885870dc 885870dc 8848c01c 8853b200                                                                                                
>   sve: a8740000 0 0 0 0 0 0 0                                                                                                                                         
>   t8 a8740000 t9 0 at 0 v0 0 v1 0 k1 88520000                                                                                                                         
>   gp a8740000 fp 0 sp 0 ra 0                                                                                                                                          
>                                                                                                                                                                       
> PANIC: Unexpected exception                                                                                                                                           
>                                                                                                                                                                       
> [Press reset or ENTER to restart.]                                                                                                                                    


When filing the problem report, I was reminded that I had run into some potentially-related problem when attempting to upgrade to 5.1.2 (which I never succeeded in doing) back in 2012:

	https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=46417

Since the installation image works, but booting the installed kernel fails, I’m guessing there’s something wrong with the GENERIC32_IP2x config?

Does someone have the ability to build and post a standalone kernel equivalent to the INSTALL32_IP2x config? I’m hoping that would allow me to boot the system.

Thanks,

Tim McIntosh