Hardware: IBM Netfinity 5000, 256MB, ServeRAID Software: RedHat 6.1, very standard installation How to crash: "find / -type f -print | cpio -oc >/dev/null" or more isolated version: echo /proc/kcore | cpio -oc >/dev/null /var/log/messages gets 3 lines: Oct 26 13:23:21 myyx0002 kernel: Uhhuh. NMI received for unknown reason 25. Oct 26 13:23:21 myyx0002 kernel: Dazed and confused, but trying to continue Oct 26 13:23:21 myyx0002 kernel: Do you have a strange power saving mode enabled? then cpio completes, no errors, back to prompt then 45 ... 60 seconds and machine reboots itself !!!!!!!!! IBM Netfinity has system error led, which gets lit at the same time when "Uhhuh ..." message comes to /var/log/messages.
This isn't a cpio problem, but rather a problem in using cpio. There are files in /proc (and in /dev) that will cause surprises if restored by cpio. Basically, don't do that ...