LKCD problems on SMP configurations?

["Tony Dziedzic" <Tony.Dziedzic@xxxxxxxxxxxx>]

I've integrated the latest LKCD code from SourceForge into our 2.4.4
kernel sources and have noticed that dumping on SMP systems isn't very
reliable.  The test that I've been using is the Alt-SysRq-C magic key
sequence to generate a "sysrq" panic.  The symptom that I see is that
the system hangs after printing the "Writing dump header ..." message.
Is anyone aware of pending issues on SMP systems?

I've found that if I comment out the __cli(); disable_local_APIC();
__sti(); sequence in smp_send_stop the hangs do not occur and I can
reproducibly generate a crash dump.  Does this ring any bells?

FWIW, the system that I'm testing on uses a Tyan S2510 motherboard (dual
CPU).

Thanks,
Tony Dziedzic
Storigen Systems, Inc.