Re: 82571EB: Detected Hardware Unit Hang

-----Original Message-----
From: Joe Jin [mailto:joe.jin@oracle.com]
Sent: Wednesday, July 11, 2012 7:23 PM
To: Dave, Tushar N
Cc: e1000-devel@lists.sf.net; netdev@vger.kernel.org; linux-
kernel@vger.kernel.org
Subject: Re: 82571EB: Detected Hardware Unit Hang

On 07/12/12 02:51, Dave, Tushar N wrote:

quoted

Joe,

I see couple of errors in lspci output.
Device capability status register shows UnCorrectable PCIe error. This

means there is certainly something went wrong. The only way to recover
from Uncorrectable errors is reset.

quoted

	DevSta:	CorrErr- *UncorrErr+ FatalErr+ UnsuppReq+ AuxPwr+

TransPend-

quoted

Also AER sections in lspci output shows PCIe completion timeout.

	Capabilities: [100 v1] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- *CmpltTO+ CmpltAbrt- UnxCmplt-

RxOF- MalfTLP+ ECRC- UnsupReq+ ACSViol-

quoted

I suggest you should load AER driver and check for any error messages in

log. Also please check any error message reported by system in BIOS log.
Are there any machine check errors?

quoted

When did you notice this issue? have 82571 ever been working before on

this server?

quoted

One more thing, Cache line size 256 is little unusual( I never seen this

value before, mostly it's 64). Does BIOS settings have been changed? Are
you using default BIOS setting?

quoted

I checked BIOS's log found the fault from the device, I changed "PCI-E
Payload Size"
from 256(default) to 128, now the device works.

I compared lspci output found Address for data of MSI Capabilities's be
changed:

Old:
       Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
               Address: 00000000fee21000  Data: 40cb

New:
       Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
               Address: 00000000fee24000  Data: 405c

Mostly like it's a BIOS bug? please comments.

Thanks,
Joe

What is the exact error messages in BIOS log?


------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
E1000-devel mailing list
E1000-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/e1000-devel
To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired