kernel lockup

Peter Cordes peter at
Wed May 16 14:03:28 EST 2001

 I'm running 2.4.4, rsynced from the benh tree.  I wanted to adjust my
keyboard key repeat stuff, so I ran (on the console)

bigfoot:~# kbdrate -h
kbdrate: invalid option -- h
Machine check in kernel mode.
Caused by (from SRR1=c9030): Unknown values in msr

 What do I do to debug this?

 The machine is totally locked, not even the SysRQ combination does
anything.  (control+command+power still resets though, since it is handled
in hardware on oldworlds.)

 More details: I'm running a quad PPC604 Mac clone from Daystar (the Genesis
MP).  The top line in /usr/src/linux-2.4-benh/ChangeSet is:
cort at|drivers/sound/dmasound/|20010106072831|13776|67da7753905f489
benh at|drivers/sound/dmasound/|20010512181358|01477,
in case that helps :)

 I wasn't running X at the time of the crash.  I was using a framebuffer
console (ATI mach64 driver).

 This crash is repeatable.  I just did it again (after going to single user
mode and remounting my drives read-only :).  However, this time it prints an
infinity of newlines after the crash message.

#define X(x,y) x##y
Peter Cordes ;  e-mail: X(peter at llama.nslug. ,

"The gods confound the man who first found out how to distinguish the hours!
 Confound him, too, who in this place set up a sundial, to cut and hack
 my day so wretchedly into small pieces!" -- Plautus, 200 BCE

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