[issue1077] Kernel lockup with SMP on -HEAD

[Matthew Dillon]

:...
:
:These are booting logs.
:1=2E Odd one lock-up: http://pastebin.ca/1077610
:2=2E Common lock-up (with 'ps' and 'trace'): http://pastebin.ca/1077611
:3=2E Working non-SMP kernel: http://pastebin.ca/1077609
:

    The boot logs are very useful.  It looks like the network is the problem.
    It's probably dying trying to configure em1, after lo0.  It is getting an
    interrupt storm on IRQ 14, which no device is attached to.  I'm guessing
    that the BIOS is lying about EM1 being on IRQ 11 and it is actually on
    IRQ 14.

    Try building a SMP kernel *without* options APIC_IO.

    If that doesn't work try configuring EM1 for polling operation only.
    Get it configured and working in a polling-only mode with a UP kernel,
    then try booting a SMP kernel and see if that works.

    It may also be possible to get through the SMP boot sequence by setting
    kern.emergency_intr_enable=1 in /boot/loader.conf, but this would purely
    be a stopgap.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>