On Wed, 14 Aug 1996, Jonathan Marsden wrote:

> At 00:16 our normally very stable NetBSD 1.1 machine (Pentium-100, PCI
> motherboard, 64Mb RAM, Adaptec 2940W and 4GB SCSI HD) panic'ed, and stopped.
> [...]
> panic: ffs_alloccg: map corrupted

In answer to your second question, this was a bug in 1.1 that was fixed in
official patch 001.

> Q1: How can we prevent the kernel debugger prompt and just have the
> machine dump core and reboot by itself?  I tried rebuilding the kernel
> but can't build one without the debugger, it has unresolved symbol
> linker errors.

You can build one without the debugger, but before you build the next one,
apply the patch and do a "make clean" in the kernel compile directory. 
Building the kernel from the ground up is necessary to remove code for
several pervasive options, such as DDB.  (Well, not _necessary_ in the
strict sense, but you would probably waste more time finding all of the
things that it touched than it would take to just compile the thing from
scratch.)

--scott