Bug 48551

Summary:	e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
Product:	Networking	Reporter:	Dmitry Shilyaev (bxtgroup)
Component:	IPV4	Assignee:	Stephen Hemminger (stephen)
Status:	RESOLVED INVALID
Severity:	normal	CC:	alan
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	2.6.18-308.13.1.el5	Subsystem:
Regression:	No	Bisected commit-id:
Bug Depends on:	7450
Bug Blocks:
Attachments:	Server configuration

Description Dmitry Shilyaev 2012-10-07 08:10:56 UTC

Created attachment 82561 [details]
Server configuration

EEPROM fix script, mentioned in the BUG 7450 is not fit our configuration. We have Intel NIC 82576 series
https://bugzilla.kernel.org/show_bug.cgi?id=7450


We have the following errors in message log

Oct  4 20:11:16 carroll kernel: igb 0000:01:00.0: Detected Tx Unit Hang
Oct  4 20:11:16 carroll kernel:   Tx Queue             <0>
Oct  4 20:11:16 carroll kernel:   TDH                  <b2>
Oct  4 20:11:16 carroll kernel:   TDT                  <17>
Oct  4 20:11:16 carroll kernel:   next_to_use          <17>
Oct  4 20:11:16 carroll kernel:   next_to_clean        <b1>
Oct  4 20:11:16 carroll kernel: buffer_info[next_to_clean]
Oct  4 20:11:16 carroll kernel:   time_stamp           <11ac16024>
Oct  4 20:11:16 carroll kernel:   next_to_watch        <b2>
Oct  4 20:11:16 carroll kernel:   jiffies              <11ac16428>
Oct  4 20:11:16 carroll kernel:   desc.status          <17a8000>
Oct  4 20:11:18 carroll kernel: igb 0000:01:00.0: Detected Tx Unit Hang
Oct  4 20:11:18 carroll kernel:   Tx Queue             <0>
Oct  4 20:11:18 carroll kernel:   TDH                  <25>
Oct  4 20:11:18 carroll kernel:   TDT                  <80>
Oct  4 20:11:18 carroll kernel:   next_to_use          <80>
Oct  4 20:11:18 carroll kernel:   next_to_clean        <24>
Oct  4 20:11:18 carroll kernel: buffer_info[next_to_clean]
Oct  4 20:11:18 carroll kernel:   time_stamp           <11ac16550>
Oct  4 20:11:18 carroll kernel:   next_to_watch        <25>
Oct  4 20:11:18 carroll kernel:   jiffies              <11ac16bf8>
Oct  4 20:11:18 carroll kernel:   desc.status          <1788000>
Oct  4 20:11:28 carroll last message repeated 3 times
Oct  4 20:11:54 carroll last message repeated 3 times
Oct  4 20:11:57 carroll last message repeated 3 times
Oct  4 20:13:00 carroll kernel: igb 0000:01:00.0: Detected Tx Unit Hang
Oct  4 20:13:00 carroll kernel:   Tx Queue             <0>
Oct  4 20:13:00 carroll kernel:   TDH                  <96>
Oct  4 20:13:00 carroll kernel:   TDT                  <2b>
Oct  4 20:13:00 carroll kernel:   next_to_use          <2b>
Oct  4 20:13:00 carroll kernel:   next_to_clean        <96>
Oct  4 20:13:00 carroll kernel: buffer_info[next_to_clean]
Oct  4 20:13:00 carroll kernel:   time_stamp           <11ac2f241>
Oct  4 20:13:00 carroll kernel:   next_to_watch        <97>
Oct  4 20:13:00 carroll kernel:   jiffies              <11ac2fa68>
Oct  4 20:13:00 carroll kernel:   desc.status          <1780000>


Here is our configuration:

# ethtool -i eth0
driver: igb
version: 3.0.6-k2-2
firmware-version: 1.4-3
bus-info: 0000:01:00.0

# uname -r
2.6.18-308.13.1.el5

Our configuration in detail is attached to this bug

Comment 1 Alan 2012-10-08 14:58:20 UTC

RHEL bugs should be reported to the vendor. The kernel is both too old and too different for upstream to care about