On Sat, 25 Sep 1999 13:08:41 -0400 
 "Kevin P. Neal" <kpneal@pobox.com> wrote:

 > unexpected machine check
 > 
 > mces = 0x1
 > vector = 0x670
 > param = 0xfffffc0000006000
 > pc = 0x120005444
 > ra = 0x1200056d8
 > curproc = 0xfffffc00010d67b8
 > 
 > pid = 12646, comm = gzip
 > 
 > panic: machine check
 > Stopped in gzip at Debugger+0x4: ret zero,(ra)
 > 
 > (typed in by hand obviously)

I suspect you have a bad memory board, and what happened is that the
hardware encountered an uncorrectable ECC error.  Note the PC and RA
are both in userspace.

What kind of machine is this?

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>