linux-kernel - e1000 Detected Tx Unit Hang

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Date:	Sat, 2 Sep 2006 00:38:50 -0400
From:	"Paul Aviles" <paul.aviles@...ei.com>
To:	<linux-kernel@...r.kernel.org>
Subject: e1000 Detected Tx Unit Hang

I am getting "e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang" using 
stock 2.6.17.11, 2.6.17.5 or 2.6.17.4 kernels on centos 4.3.

The server is a Tyan GS10 and is connected to a Netgear GS724T Gig switch. I 
can easily reproduce the problem by trying to do a large ftp transfer to the 
server. It does not happen if the server is connected to a dummy 100 Mb 
switch, only when is connected to the Gig switch.
I have also tried the options line below disabling tso, tx and rx in the 
modprobe.conf without any luck.

options e1000 XsumRX=0 Speed=1000 Duplex=2 InterruptThrottleRate=0 
FlowControl=3 RxDescriptors=4096 TxDescriptors=4096 RxIntDelay=0 
TxIntDelay=0

in /var/log/kernel I get the following...

Sep  1 23:53:01 www kernel: e1000: eth0: e1000_clean_tx_irq: Detected Tx 
Unit Hang
Sep  1 23:53:01 www kernel:   Tx Queue             <0>
Sep  1 23:53:01 www kernel:   TDH                  <4c4>
Sep  1 23:53:01 www kernel:   TDT                  <4c9>
Sep  1 23:53:01 www kernel:   next_to_use          <4c9>
Sep  1 23:53:01 www kernel:   next_to_clean        <4c4>
Sep  1 23:53:01 www kernel: buffer_info[next_to_clean]
Sep  1 23:53:01 www kernel:   time_stamp           <ffff9c60>
Sep  1 23:53:01 www kernel:   next_to_watch        <4c4>
Sep  1 23:53:01 www kernel:   jiffies              <ffff9d96>
Sep  1 23:53:01 www kernel:   next_to_watch.status <0>
.
repeats the same as above a few times....
.
Sep  1 23:53:10 www kernel: NETDEV WATCHDOG: eth0: transmit timed out
Sep  1 23:53:13 www kernel: e1000: eth0: e1000_watchdog_task: NIC Link is Up 
1000 Mbps Full Duplex

then the server locks up, no response from the keyboard at all and must be 
forced down with a power kill.

Here is my driver info,

driver: e1000
version: 7.0.33-k2-NAPI
firmware-version: N/A
bus-info: 0000:02:01.0

What else could I check?

Regards,

Paul Aviles 

-- 
VGER BF report: U 0.5
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