netdev - RE: eth1: Detected Hardware Unit Hang

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Date:	Wed, 31 Mar 2010 13:59:59 -0600
From:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
To:	Paweł Staszewski <pstaszewski@...are.pl>
CC:	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	Linux Network Development list <netdev@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>
Subject: RE: eth1: Detected Hardware Unit Hang

Paweł Staszewski wrote:
> W dniu 2010-03-31 20:03, Tantilov, Emil S pisze:
>> Pawel Staszewski wrote:
>> 
>>> Hello
>>> 
>>> I reproduce this problem on other machine with the same hardware and
>>> here is dmesg output: (kernel 2.6.33)
>>> 
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769395] 0000:04:00.0: eth0:
>>> Detected Hardware Unit Hang: Mar 27 18:19:16 TM_01_C1
>>> [1817894.769396]   TDH<2e> 
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769397]   TDT<1a>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769397]   next_to_use<1a>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769398]   next_to_clean<2d>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769398]
>>> buffer_info[next_to_clean]: Mar 27 18:19:16 TM_01_C1
>>> [1817894.769399]   time_stamp<11b1591e9> 
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769399]   next_to_watch<2f>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769400]   jiffies<11b1592e4>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769401]   next_to_watch.status<0>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769401] MAC Status<80080783>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769402] PHY Status<796d>
>>> Mar 27 18:19:16 TM_01_C1 [1817894.769402] PHY 1000BASE-T
>>> Status<3800> Mar 27 18:19:16 TM_01_C1 [1817894.769403] PHY Extended
>>> Status<3000> Mar 27 18:19:16 TM_01_C1 [1817894.769404] PCI
>>> Status<10> 
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773365] 0000:04:00.0: eth0:
>>> Detected Hardware Unit Hang: Mar 27 18:19:18 TM_01_C1
>>> [1817896.773367]   TDH<2e> 
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773368]   TDT<1a>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773368]   next_to_use<1a>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773369]   next_to_clean<2d>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773369]
>>> buffer_info[next_to_clean]: Mar 27 18:19:18 TM_01_C1
>>> [1817896.773370]   time_stamp<11b1591e9> 
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773370]   next_to_watch<2f>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773371]   jiffies<11b1594d8>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773372]   next_to_watch.status<0>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773372] MAC Status<80080783>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773373] PHY Status<796d>
>>> Mar 27 18:19:18 TM_01_C1 [1817896.773373] PHY 1000BASE-T
>>> Status<3800> Mar 27 18:19:18 TM_01_C1 [1817896.773374] PHY Extended
>>> Status<3000> Mar 27 18:19:18 TM_01_C1 [1817896.773375] PCI
>>> Status<10> 
>>> Mar 27 18:19:20 TM_01_C1 [1817898.769353] 0000:04:00.0: eth0:
>>> Detected 
>>> 
>> <snip>
>> 
>> I have a similar (not the same model) system in the lab with
>> 82573E/L on board, but was not able to reproduce the Tx hangs you
>> reported. So at this point we need to start looking into more
>> details. Could you please file a bug at e1000.sf.net? Include the
>> information you provided so far and also:    
>> 1. output from ethtoool -e
>> 2. ethtool -d
>> 3. cat /proc/interrupts
>> 4. full dmesg output from boot to the point where Tx hangs occurred.
>> 5. kernel config file
>> 
>> Looking at the description of your system (Supermicro X7DCT) I see
>> this board has IPMI option. Do you have IPMI in your system? 
>> 
>> 
> Aditional informations are in attached files.
> Yes there is IPMI option but i don't have it.
> 
> And yes i will make a bugreport at e1000.sf.net.

Thanks Pawel, for the quick reply. I see that you have disabled flow control. Is that on purpose? What is your link partner?

Thanks,
Emil
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