netdev - RE: eth1: Detected Hardware Unit Hang

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Message-ID: <EA929A9653AAE14F841771FB1DE5A1365FE4CC716B@rrsmsx501.amr.corp.intel.com>
Date:	Wed, 31 Mar 2010 12:03:30 -0600
From:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
To:	Paweł Staszewski <pstaszewski@...are.pl>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>
CC:	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

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?

Thanks,
Emil--
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