Tyan K8S Pro + SACK problem

[Mark Bojara]

Hello,

Ive been trying to get my Dual Tyan motheroard to work with FreeBSD 5.3. 
If I send through alot of network traffic eventually after 5/6 hours 
uptime the box crashes with a page fault.

I then proceeded to doing some tests and disabled net.inet.tcp.sack.enable 
wich since then my box has been stable.

Specs:
Tyan K8S Pro (S2882) Motherboard
2 x Opteron (242) 1.8 Ghz
1 x ECC 1GB PC2700 module (yeh i know its a performance problem)

Error:
Fatal trap 12: page fault whine in kernel mode
cpu id =1; apic id=01
fault virtual address   = 0x18
fault code              = supervisor read,page not present
Instruction pointer     = 0x8:0xffffffffa25bc800
frame pointer           = 0x10:0x0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, long 1, olef32 0, gran 1
trap number             = 12
panic: page fault
cpuid = 1
boot() called on cpu#1
uptime 10h3m45s

Regards
Mark Bojara