After a little more than one day up with 2.4.32 SMP+ACP+aic7xxx, I got another bad pmd and an oops this morning at 4:23am. I'm going to boot vanilla 2.4.32 with nosmp and acpi=off.
Your oops does not make much sense, could you enable following, please:
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_SLAB=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_FRAME_POINTER=y
booting with "nosmp acpi=off" did not help. The box hung as before, at
Could you boot with pci=noacpi and report again? The difference is that ACPI will still be used but not for IRQ routing. I have a few boxes out with 2.4.x kernels and Adaptec HBAs that need this to work reliably.
What's the SCSI BIOS version?
What's the diff between /proc/interrupt and lspci -v on those kernels, when they've finished the booting sequence?
If you find time, send me your BIOS settings and your .config in private email. I didn't track this thread from the beginning, so I don't know if you've already done this.