2.0.31pre10 panic: kernel/sched.c: FORWARDED INTERRUPT TIMEOUT

Larry M. Augustin (lma@varesearch.com)
Mon, 6 Oct 1997 18:35:07 -0700

We're getting SMP systems crashing with 2.0.31pre10. These are 300MHz
Pentium II systems using the Tyan Tahoe II (S1682D) dual processor
board. Most systems go into black death after about 9 hours of
testing under heavy load; black screen; no response to any input
(keyboard, mouse, or network). The systems are monitored closely
during testing so I know almost exactly when they stop responding. I
have 4 systems undergoing tests. Usually there are no error messages
in the logs or on the console when the machine dies.

In one instance we did get an error logged:

FORWARDED INTERRUPT TIMEOUT (AKP = 1, Saved AKP = 0)

The systems only fail if SMP support is enabled.

Sounds like a deadlock. Susggestions as to how best to track this
deadlock down?

Thanks,

Larry