netdev - 82571EB: Detected Hardware Unit Hang

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Message-ID: <4FFA9B96.6040901@oracle.com>
Date:	Mon, 09 Jul 2012 16:51:34 +0800
From:	Joe Jin <joe.jin@...cle.com>
To:	e1000-devel@...ts.sf.net
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: 82571EB: Detected Hardware Unit Hang

Hi list,

I'm seeing a Unit Hang even with the latest e1000e driver 2.0.0 when doing
scp test. this issue is easy do reproduced on SUN FIRE X2270 M2, just copy
a big file (>500M) from another server will hit it at once. 

Would you please help on this?

device info:
# lspci -s 05:00.0 
05:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper) (rev 06)

# lspci -s 05:00.0 -n
05:00.0 0200: 8086:10bc (rev 06)

# ethtool -i eth0
driver: e1000e
version: 2.0.0-NAPI
firmware-version: 5.10-2
bus-info: 0000:05:00.0

# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on
udp fragmentation offload: off
generic segmentation offload: on
generic-receive-offload: on

kernel log:
-----------
e1000e 0000:05:00.0: eth0: Detected Hardware Unit Hang:
  TDH                  <6c>
  TDT                  <81>
  next_to_use          <81>
  next_to_clean        <6b>
buffer_info[next_to_clean]:
  time_stamp           <fffc7a23>
  next_to_watch        <71>
  jiffies              <fffc8c0c>
  next_to_watch.status <0>
MAC Status             <80387>
PHY Status             <792d>
PHY 1000BASE-T Status  <3c00>
PHY Extended Status    <3000>
PCI Status             <10>
e1000e 0000:05:00.0: eth0: Detected Hardware Unit Hang:
  TDH                  <6c>
  TDT                  <81>
  next_to_use          <81>
  next_to_clean        <6b>
buffer_info[next_to_clean]:
  time_stamp           <fffc7a23>
  next_to_watch        <71>
  jiffies              <fffc9bac>
  next_to_watch.status <0>
MAC Status             <80387>
PHY Status             <792d>
PHY 1000BASE-T Status  <3c00>
PHY Extended Status    <3000>
PCI Status             <10>
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0x225/0x230()
Hardware name: SUN FIRE X2270 M2
NETDEV WATCHDOG: eth0 (e1000e): transmit queue 0 timed out
Modules linked in: autofs4 hidp rfcomm bluetooth rfkill lockd sunrpc cpufreq_ondemand acpi_cpufreq mperf be2iscsi iscsi_boot_sysfs ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp bnx2i cnic uio ipv6 cxgb3i libcxgbi cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi video sbs sbshc acpi_pad acpi_ipmi ipmi_msghandler parport_pc lp parport e1000e(U) snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device igb snd_pcm_oss serio_raw snd_mixer_oss snd_pcm tpm_infineon snd_timer snd soundcore snd_page_alloc i2c_i801 iTCO_wdt i2c_core pcspkr i7core_edac iTCO_vendor_support ioatdma ghes dca edac_core hed dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage sd_mod crc_t10dif sg ahci libahci ext3 jbd mbcache [last unloaded: microcode]
Pid: 0, comm: swapper Not tainted 2.6.39-200.24.1.el5uek #1
Call Trace:
 [<c07d9ac5>] ? dev_watchdog+0x225/0x230
 [<c045ba61>] warn_slowpath_common+0x81/0xa0
 [<c07d9ac5>] ? dev_watchdog+0x225/0x230
 [<c045bb23>] warn_slowpath_fmt+0x33/0x40
 [<c07d9ac5>] dev_watchdog+0x225/0x230
 [<c07d98a0>] ? dev_activate+0xb0/0xb0
 [<c0468e82>] call_timer_fn+0x32/0xf0
 [<c04bceb0>] ? rcu_check_callbacks+0x80/0x80
 [<c046a76d>] run_timer_softirq+0xed/0x1b0
 [<c07d98a0>] ? dev_activate+0xb0/0xb0
 [<c0461a81>] __do_softirq+0x91/0x1a0
 [<c04619f0>] ? local_bh_enable+0x80/0x80
 <IRQ>  [<c0462295>] ? irq_exit+0x95/0xa0
 [<c087f8b8>] ? smp_apic_timer_interrupt+0x38/0x42
 [<c08784f5>] ? apic_timer_interrupt+0x31/0x38
 [<c046007b>] ? do_exit+0x11b/0x370
 [<c065eae4>] ? intel_idle+0xa4/0x100
 [<c078d9b9>] ? cpuidle_idle_call+0xb9/0x1e0
 [<c0411d77>] ? cpu_idle+0x97/0xd0
 [<c085cbbd>] ? rest_init+0x5d/0x70
 [<c0b07a7a>] ? start_kernel+0x28a/0x340
 [<c0b074b0>] ? obsolete_checksetup+0xb0/0xb0
 [<c0b070a4>] ? i386_start_kernel+0x64/0xb0
---[ end trace 5502b55cd4d4e5cb ]---
e1000e 0000:05:00.0: eth0: Reset adapter
e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx

Thanks,
Joe
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