PfSense 2.2.6 crashed due to programming bug.

nirav.solanki · Dec 27, 2016, 7:28 AM

Hi PfSense Experts,

We are facing very odd issue with pfsense, It crashes frequently one or twice a day gets mount root error on boot therefore we have to forcefully powerdown system , once we reboot it is report like pfSense has detected a crash report or programming bug. We have attached crash report here. Is this could be hardware issue?

I would highly appreciate if someone please help us in this matter.

Thanks & Kind Regards,
Nirav
PfSense_Crash_Report_27122016.txt

jimp · Dec 27, 2016, 1:23 PM

Your hardware is broken.

MCA: Bank 4, Status 0xb200000000070f0f
MCA: Global Cap 0x0000000000000105, Status 0x0000000000000004
MCA: Vendor "AuthenticAMD", ID 0x20ff2, APIC ID 0
MCA: CPU 0 UNCOR PCC BUSLG ??? ERR Other timed out
panic: Unrecoverable machine check exception
cpuid = 0
KDB: enter: panic

MCA/MCE errors can only come from hardware. There is no way for a software issue to trigger them.

nirav.solanki · Dec 28, 2016, 12:32 PM

Thanks for the information.

Can you point out from that crash report specifically which hardware device is malfunctioned ?

jimp · Dec 28, 2016, 1:40 PM

Hardware event. This is not a software error.
CPU 0 4 northbridge 
  Northbridge Watchdog error
       bit57 = processor context corrupt
       bit61 = error uncorrected
  bus error 'generic participation, request timed out
             generic error mem transaction
             generic access, level generic'
STATUS b200000000070f0f MCGSTATUS 4
MCGCAP 105 APICID 0 SOCKETID 0 
CPUID Vendor AMD Family 15 Model 47

Nothing there sounds good, it also doesn't point to any one specific thing.

Given that seems to be a >10yr old CPU, it's probably time to consider a replacement box.

AMD	0F	2F	K8 (rev.E)	   Athlon 64  Sempron