Date:	Sun, 22 Feb 2015 07:01:17 -0500
From:	"Justin Piszcz" <jpiszcz@...idpixels.com>
To:	<linux-kernel@...r.kernel.org>
Subject: 3.19: ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout

Hello,

Kernel: 3.19.0
Issue: When using robocopy to copy files (from Windows 8/8.1) to
Linux/samba, the 10GbE NIC resets - dmesg [1] below.  To get it back working
again, I have to down/up the interface.  Jumbo frames are being used (mtu of
9014) on each side. The lspci output is listed below.  Are there any other
recommended workarounds for this issue as LRO is already off for me as shown
below.  When using Linux<->Linux with rsync or NFS, there are no errors with
10GbE.  When using Samba<->Windows 8 over 10GbE, this issue occurs
persistently as shown below when a copy is running.

# ethtool -k eth4|grep large
large-receive-offload: off [fixed]

There is/was a similar issue as reported here:
https://communities.intel.com/message/207408

[1] dmesg

[538576.098186] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[541013.223961] ------------[ cut here ]------------
[541013.223970] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:303
dev_watchdog+0x227/0x230()
[541013.223971] NETDEV WATCHDOG: eth4 (ixgbe): transmit queue 0 timed out
[541013.223972] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.19.0 #2
[541013.223973] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 3.0a
12/05/2013
[541013.223974]  ffffffff81d3a6ae ffff88107fc03da8 ffffffff819d07d7
ffffffff81e34d98
[541013.223976]  ffff88107fc03df8 ffff88107fc03de8 ffffffff810dbdab
0000000000000000
[541013.223977]  0000000000000000 ffff881036304000 0000000000000000
0000000000000010
[541013.223979] Call Trace:
[541013.223979]  <IRQ>  [<ffffffff819d07d7>] dump_stack+0x45/0x57
[541013.223985]  [<ffffffff810dbdab>] warn_slowpath_common+0x7b/0xc0
[541013.223987]  [<ffffffff810dbe61>] warn_slowpath_fmt+0x41/0x50
[541013.223990]  [<ffffffff810eec4c>] ? __queue_work+0xfc/0x290
[541013.223996]  [<ffffffff818ef0a7>] dev_watchdog+0x227/0x230
[541013.223997]  [<ffffffff818eee80>] ? qdisc_rcu_free+0x40/0x40
[541013.223998]  [<ffffffff818eee80>] ? qdisc_rcu_free+0x40/0x40
[541013.224001]  [<ffffffff811251f7>] call_timer_fn.isra.29+0x17/0x80
[541013.224002]  [<ffffffff81125429>] run_timer_softirq+0x1c9/0x280
[541013.224004]  [<ffffffff810dec7f>] __do_softirq+0xff/0x200
[541013.224005]  [<ffffffff810deea6>] irq_exit+0x76/0xa0
[541013.224007]  [<ffffffff8106ac11>] smp_apic_timer_interrupt+0x41/0x50
[541013.224009]  [<ffffffff819da6aa>] apic_timer_interrupt+0x6a/0x70
[541013.224009]  <EOI>  [<ffffffff8184e8f8>] ? cpuidle_enter_state+0x48/0xc0
[541013.224013]  [<ffffffff8184e8ed>] ? cpuidle_enter_state+0x3d/0xc0
[541013.224014]  [<ffffffff8184ea42>] cpuidle_enter+0x12/0x20
[541013.224017]  [<ffffffff8110f222>] cpu_startup_entry+0x272/0x2f0
[541013.224018]  [<ffffffff819cdd5d>] rest_init+0x6d/0x70
[541013.224021]  [<ffffffff81ef0dbb>] start_kernel+0x353/0x360
[541013.224022]  [<ffffffff81ef0495>] x86_64_start_reservations+0x2a/0x2c
[541013.224023]  [<ffffffff81ef055f>] x86_64_start_kernel+0xc8/0xcc
[541013.224024] ---[ end trace 59877113cf8b7358 ]---
[541013.224026] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[541013.224036] ixgbe 0000:01:00.0 eth4: Reset adapter
[541020.099402] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX

( .. it continue but without the trace later .. )

[567457.771728] ixgbe 0000:01:00.0 eth4: NIC Link is Down
[567458.140112] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[567561.611941] ixgbe 0000:01:00.0 eth4: NIC Link is Down
[567568.188422] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[570130.483823] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[570130.483924] ixgbe 0000:01:00.0 eth4: Reset adapter
[570137.252167] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[572094.256452] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[572094.256538] ixgbe 0000:01:00.0 eth4: Reset adapter
[572101.130915] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[573967.946084] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[573967.946097] ixgbe 0000:01:00.0 eth4: Reset adapter
[573974.676387] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[575766.574731] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[575766.574753] ixgbe 0000:01:00.0 eth4: Reset adapter
[575773.315067] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX
[585476.513732] perf interrupt took too long (5003 > 5000), lowering
kernel.perf_event_max_sample_rate to 25000
[597267.959412] ixgbe 0000:01:00.0 eth4: initiating reset due to tx timeout
[597267.959452] ixgbe 0000:01:00.0 eth4: Reset adapter
[597274.709728] ixgbe 0000:01:00.0 eth4: NIC Link is Up 10 Gbps, Flow
Control: RX/TX

[2] lspci

01:00.0 Ethernet controller: Intel Corporation 82598EB 10-Gigabit AT2 Server
Adapter (rev 01)
  Subsystem: Intel Corporation 82598EB 10-Gigabit AT2 Server Adapter
  Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
  Latency: 0, Cache Line Size: 64 bytes
  Interrupt: pin A routed to IRQ 85
  Region 0: Memory at fbe40000 (32-bit, non-prefetchable) [size=128K]
  Region 1: Memory at fbe00000 (32-bit, non-prefetchable) [size=256K]
  Region 2: I/O ports at e000 [size=32]
  Region 3: Memory at fbe60000 (32-bit, non-prefetchable) [size=16K]
  Capabilities: [40] Power Management version 3
    Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold-)
    Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME-
  Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
    Address: 0000000000000000  Data: 0000
  Capabilities: [60] MSI-X: Enable+ Count=18 Masked-
    Vector table: BAR=3 offset=00000000
    PBA: BAR=3 offset=00002000
  Capabilities: [a0] Express (v2) Endpoint, MSI 00
    DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
      ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
    DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
      RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
      MaxPayload 256 bytes, MaxReadReq 512 bytes
    DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
    LnkCap: Port #0, Speed 2.5GT/s, Width x8, ASPM L0s L1, Exit Latency L0s
<4us, L1 <64us
      ClockPM- Surprise- LLActRep- BwNot-
    LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
      ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
    DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not
Supported
    DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR-, OBFF
Disabled
    LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
       Transmit Margin: Normal Operating Range, EnterModifiedCompliance-
ComplianceSOS-
       Compliance De-emphasis: -6dB
    LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-,
EqualizationPhase1-
       EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
  Capabilities: [100 v1] Advanced Error Reporting
    UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
    UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
    UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+
MalfTLP+ ECRC- UnsupReq- ACSViol-
    CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
    CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
    AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
  Capabilities: [140 v1] Device Serial Number 00-1b-21-ff-ff-58-e6-aa
  Kernel driver in use: ixgbe
00: 86 80 0b 15 07 04 10 00 01 00 00 02 10 00 00 00
10: 00 00 e4 fb 00 00 e0 fb 01 e0 00 00 00 00 e6 fb
20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 2c a1
30: 00 00 00 00 40 00 00 00 00 00 00 00 0b 01 00 00
40: 01 50 23 48 00 20 00 fa 00 00 00 00 00 00 00 00
50: 05 60 80 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 11 a0 11 80 03 00 00 00 03 20 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 10 00 02 00 c1 8c 00 00 2f 28 00 00 81 6c 03 00
b0: 40 00 81 10 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 1f 00 00 00 05 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
100: 01 00 01 14 00 00 00 00 00 00 10 00 11 20 06 00
110: 00 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00
120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
140: 03 00 01 00 aa e6 58 ff ff 21 1b 00 00 00 00 00
150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 (the rest are: XXX: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00)

Justin.

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