On 1/11/2012 6:40 AM, Dave, Tushar N wrote:
> Thanks for driver info.
> Because you are running in-kernel driver, we can enable the debug message 
> level via ethtool. That will print HW ring info when issue occurs.
>
> Here is the ethtool command to enable debug messages.
> # ethtool -s ethx msglvl 0x3c00
> This will enable tx_done, rx_status, pktdata and hw message levels.
> You can confirm it by typing ethtool ethx , this will show you 'Current 
> message level'
>
> Next time when issue occurs, please send me the full dmesg log after the 
> issue occurred along with the bus trace.

As I said earlier, issue is reproducible if I try to keep my 
rootfilesystem  over NFS. So, after the booting, kernel tries to mount 
rootfs over NFS and it crashes. So, I see issue even before I can reach 
to # prompt. How can I use "ethtool -s ethx msglvl 0x3c00" to enable any 
debug message. May be I can directly change in kernel code to enable this.

Regards
Pratyush
>
> Thanks.
>
> -Tushar
>
>
> -----Original Message-----
> From: Pratyush Anand [mailto:pratyush.an...@st.com]
> Sent: Monday, January 09, 2012 8:21 PM
> To: Dave, Tushar N
> Cc: Greg KH; Pratyush Anand; e1000-devel@lists.sourceforge.net; 
> net...@vger.kernel.org; Shiraz HASHIM; Deepak SIKRI; Bhavna YADAV; 
> linux-...@vger.kernel.org; Linux NICS
> Subject: Re: Detected Hardware Unit Hang on Intel Wired Ethernet
>
> On 1/7/2012 12:25 AM, Dave, Tushar N wrote:
>> Pratyush,
>>
>> Sorry I got your name reversed.
>> Are you using in-kernel driver or one from Sourceforge.
>
> I am using in-kernel driver from kernel 2.6.37.
>
>> Please send me output of ethtool -i ethx.
>
> root@192.168.1.10:~# ethtool -i eth0
> driver: e1000e
> version: 1.2.7-k2
> firmware-version: 5.11-8
> bus-info: 0000:01:00.0
>
> Regards
> Pratyush
>
>>
>> -Tushar
>>
>> -----Original Message-----
>> From: Pratyush Anand [mailto:pratyush.an...@st.com]
>> Sent: Thursday, January 05, 2012 8:25 PM
>> To: Dave, Tushar N
>> Cc: Greg KH; Pratyush Anand; e1000-devel@lists.sourceforge.net; 
>> net...@vger.kernel.org; Shiraz HASHIM; Deepak SIKRI; Bhavna YADAV; 
>> linux-...@vger.kernel.org; Linux NICS
>> Subject: Re: Detected Hardware Unit Hang on Intel Wired Ethernet
>>
>> Thanks Tushar,
>>
>> On 1/6/2012 5:24 AM, Dave, Tushar N wrote:
>>> Anand,
>>>
>>> Sorry to hear that you have this issue with card. And yeah, thanks for 
>>> doing the debugging and providing the bus trace.
>>> I think we should run the debug driver that prints the HW ring details when 
>>> hang occurs. I can provide you a debug driver. You can then install debug 
>>> driver and also let the bus tracer running. Once the issue occurs, provide 
>>> me the full dmesg output (that has HW ring details) and bus trace.
>>>
>>> Tell me which card you have, 1gig or 10gig? Which driver are you running 
>>> e1000e or igb or ixgbe?
>>> Can you also provide ethtool -i ethx output.
>>>
>>> Once I know which driver, I send you debug driver.
>>
>> I am using Intel PRO/1000 PT Server Adapter.
>> http://www.intel.com/content/www/us/en/network-adapters/gigabit-network-adapters/pro-1000-pt.html
>>
>> I am using e1000e driver.
>>
>> I see the problem when I try to mount rootfilesystem using NFS and use
>> MSI interrupt. I see this issue even before I can have cell prompt.
>> Please see first mail in this thread.
>>
>> http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg04894.html
>>
>> Here, you can also see tx ring details when issue occur.
>> Please let me know, if you need any more info.
>>
>> Regards
>> Pratyush
>>
>>>
>>> Thanks.
>>>
>>> -Tushar
>>>
>>> -----Original Message-----
>>> From: netdev-ow...@vger.kernel.org [mailto:netdev-ow...@vger.kernel.org] On 
>>> Behalf Of Pratyush Anand
>>> Sent: Wednesday, January 04, 2012 8:31 PM
>>> To: Greg KH
>>> Cc: Pratyush Anand; e1000-devel@lists.sourceforge.net; 
>>> net...@vger.kernel.org; Shiraz HASHIM; Deepak SIKRI; Bhavna YADAV; 
>>> linux-...@vger.kernel.org; Linux NICS
>>> Subject: Re: Detected Hardware Unit Hang on Intel Wired Ethernet
>>>
>>> On 1/5/2012 12:52 AM, Greg KH wrote:
>>>> On Wed, Jan 04, 2012 at 04:31:36PM +0530, Pratyush Anand wrote:
>>>>> Adding PCI mailing list too, as problem is coming only when MSI is 
>>>>> enabled.
>>>>>
>>>>> If I connect an PCIe analyzer, I see that at the time of issue
>>>>> MRd(64) for 32 words has been issued with a wrong 64 bit address
>>>>> from ethernet card to my RC.
>>>>> In the normal course it always issues MRd(32) only.
>>>>
>>>> Bug in your pcie firmware controller?
>>>>
>>>> .
>>>>
>>>
>>> when you say "Bug in your pcie firmware controller?", is it RC's
>>> software or EP's software?
>>>
>>> Here I am pasting a part of analyzer log converted into text.
>>> Packet(177940), is an upstream request for MSI. Whenever any device
>>> writes at address 0x58A8F8, my PCIe RC considers it as MSI and generates
>>> an interrupt. So I receive MSI interrupt correctly in my software. Also
>>> MSI controller is correctly able to point me that the interrupt is from
>>> ethernet card.
>>>
>>> Now in Packet(178010), ethernet controller sends another upstream
>>> request for MRd(64) of 32 dwords with Address(AFECEB87:A9D88B00).Since,
>>> this address does not exist in my RC's world so, an UR is returned and
>>> hence the problem occurs.
>>>
>>> Now, question is, why ethernet card is generating inbound request with
>>> such a wrong address. I have taken log of all the tx_desc->buffer_addr
>>> programmed by software in function e1000_tx_queue. None of them is 64
>>> bit or any invalid address.
>>>
>>> _______|_______________________________________________________________________
>>> Packet(177916) Upstream 2.5(x1) TLP(1475) Mem MWr(32)(10:00000) Length(4)
>>> _______| RequesterID(003:00:0) Tag(2) Address(0EB00200) 1st BE(1111)
>>> _______| Last BE(1111) Data(4 dwords) LCRC(0x44E0407C)
>>> _______| Time Stamp(0013 . 460 549 544 s)
>>> _______|_______________________________________________________________________
>>> Packet(177918) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1475)
>>> _______| CRC 16(0x0EB7) Time Stamp(0013 . 460 551 144 s)
>>> _______|_______________________________________________________________________
>>> Packet(177940) Upstream 2.5(x1) TLP(1476) Mem MWr(32)(10:00000) Length(1)
>>> _______| RequesterID(003:00:0) Tag(30) Address(0058A8F8) 1st BE(0011)
>>> _______| Last BE(0000) Data(1 dword) LCRC(0xC21F32B6)
>>> _______| Time Stamp(0013 . 460 588 544 s)
>>> _______|_______________________________________________________________________
>>> Packet(177942) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1476)
>>> _______| CRC 16(0x69F5) Time Stamp(0013 . 460 590 088 s)
>>> _______|_______________________________________________________________________
>>> Packet(177946) Downstream 2.5(x1) TLP(309) Mem MRd(32)(00:00000) Length(1)
>>> _______| RequesterID(002:00:0) Tag(19) Address(C01000C0) 1st BE(1111)
>>> _______| Last BE(0000) LCRC(0x91BDA1F5) Time Stamp(0013 . 460 595 936 s)
>>> _______|_______________________________________________________________________
>>> Packet(177947) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(309)
>>> _______| CRC 16(0x25C6) Time Stamp(0013 . 460 596 368 s)
>>> _______|_______________________________________________________________________
>>> Packet(177950) Upstream 2.5(x1) TLP(1477) Cpl CplD(10:01010) Length(1)
>>> _______| RequesterID(002:00:0) Tag(19) CompleterID(003:00:0) Status(SC)
>>> BCM(0)
>>> _______| Byte Cnt(4) Lwr Addr(0x40) Data(1 dword) LCRC(0x8FE0D922)
>>> _______| Time Stamp(0013 . 460 597 304 s)
>>> _______|_______________________________________________________________________
>>> Packet(177952) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1477)
>>> _______| CRC 16(0xC8EE) Time Stamp(0013 . 460 598 840 s)
>>> _______|_______________________________________________________________________
>>> Packet(177999) Downstream 2.5(x1) TLP(310) Mem MWr(32)(10:00000) Length(1)
>>> _______| RequesterID(002:00:0) Tag(0) Address(C0103818) 1st BE(1111)
>>> _______| Last BE(0000) Data(1 dword) LCRC(0xA898D9A1)
>>> _______| Time Stamp(0013 . 460 687 936 s)
>>> _______|_______________________________________________________________________
>>> Packet(178001) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(310)
>>> _______| CRC 16(0xC6EA) Time Stamp(0013 . 460 688 384 s)
>>> _______|_______________________________________________________________________
>>> Packet(178004) Upstream 2.5(x1) TLP(1478) Mem MRd(32)(00:00000) Length(4)
>>> _______| RequesterID(003:00:0) Tag(4) Address(0EAFB990) 1st BE(1111)
>>> _______| Last BE(1111) LCRC(0xB54722D2) Time Stamp(0013 . 460 689 312 s)
>>> _______|_______________________________________________________________________
>>> Packet(178006) Downstream 2.5(x1) TLP(311) Cpl CplD(10:01010) Length(4)
>>> _______| RequesterID(003:00:0) Tag(4) CompleterID(002:00:0) Status(SC)
>>> BCM(0)
>>> _______| Byte Cnt(16) Lwr Addr(0x10) Data(4 dwords) LCRC(0xFE303776)
>>> _______| Time Stamp(0013 . 460 690 288 s)
>>> _______|_______________________________________________________________________
>>> Packet(178007) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(311)
>>> _______| CRC 16(0x67F1) Time Stamp(0013 . 460 690 776 s)
>>> _______|_______________________________________________________________________
>>> Packet(178008) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1478)
>>> _______| CRC 16(0x2BC2) Time Stamp(0013 . 460 690 824 s)
>>> _______|_______________________________________________________________________
>>> Packet(178010) Upstream 2.5(x1) TLP(1479) Mem MRd(64)(01:00000) Length(32)
>>> _______| RequesterID(003:00:0) Tag(11) Address(AFECEB87:A9D88B00) 1st
>>> BE(1100)
>>> _______| Last BE(0011) LCRC(0x6BE341C9) Time Stamp(0013 . 460 691 680 s)
>>> _______|_______________________________________________________________________
>>> Packet(178011) Upstream 2.5(x1) TLP(1480) Mem MRd(64)(01:00000) Length(32)
>>> _______| RequesterID(003:00:0) Tag(8) Address(AFECEB87:A9D88B7C) 1st
>>> BE(1100)
>>> _______| Last BE(0011) LCRC(0xAA5647BD) Time Stamp(0013 . 460 691 808 s)
>>> _______|_______________________________________________________________________
>>> Packet(178012) Upstream 2.5(x1) TLP(1481) Mem MRd(64)(01:00000) Length(32)
>>> _______| RequesterID(003:00:0) Tag(9) Address(AFECEB87:A9D88BF8) 1st
>>> BE(1100)
>>> _______| Last BE(0011) LCRC(0xEEB1F63F) Time Stamp(0013 . 460 692 120 s)
>>> _______|_______________________________________________________________________
>>> Packet(178013) Upstream 2.5(x1) TLP(1482) Mem MRd(64)(01:00000) Length(32)
>>> _______| RequesterID(003:00:0) Tag(10) Address(AFECEB87:A9D88C74) 1st
>>> BE(1100)
>>> _______| Last BE(0011) LCRC(0xA508142C) Time Stamp(0013 . 460 692 248 s)
>>> _______|_______________________________________________________________________
>>> Packet(178014) Downstream 2.5(x1) TLP(312) Cpl Cpl(00:01010) Length(0)
>>> _______| RequesterID(003:00:0) Tag(11) CompleterID(002:00:0) Status(UR)-BAD
>>> _______| BCM(0) Byte Cnt(124) Lwr Addr(0x02) LCRC(0xCE5540D2)
>>> _______| Time Stamp(0013 . 460 692 328 s)
>>> _______|_______________________________________________________________________
>>> Packet(178015) Downstream 2.5(x1) TLP(313) Cpl Cpl(00:01010) Length(0)
>>> _______| RequesterID(003:00:0) Tag(8) CompleterID(002:00:0) Status(UR)-BAD
>>> _______| BCM(0) Byte Cnt(124) Lwr Addr(0x7E) LCRC(0x9FE2487D)
>>> _______| Time Stamp(0013 . 460 692 456 s)
>>> _______|_______________________________________________________________________
>>> Packet(178016) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(312)
>>> _______| CRC 16(0x086E) Time Stamp(0013 . 460 692 760 s)
>>> _______|_______________________________________________________________________
>>> Packet(178017) Downstream 2.5(x1) TLP(314) Cpl Cpl(00:01010) Length(0)
>>> _______| RequesterID(003:00:0) Tag(9) CompleterID(002:00:0) Status(UR)-BAD
>>> _______| BCM(0) Byte Cnt(124) Lwr Addr(0x7A) LCRC(0x097BF4DE)
>>> _______| Time Stamp(0013 . 460 692 776 s)
>>> _______|_______________________________________________________________________
>>> Packet(178018) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(313)
>>> _______| CRC 16(0xA975) Time Stamp(0013 . 460 692 888 s)
>>> _______|_______________________________________________________________________
>>> Packet(178019) Downstream 2.5(x1) TLP(315) Cpl Cpl(00:01010) Length(0)
>>> _______| RequesterID(003:00:0) Tag(10) CompleterID(002:00:0) Status(UR)-BAD
>>> _______| BCM(0) Byte Cnt(124) Lwr Addr(0x76) LCRC(0x64BDF921)
>>> _______| Time Stamp(0013 . 460 692 904 s)
>>> _______|_______________________________________________________________________
>>> Packet(178020) Upstream 2.5(x1) TLP(1483) Msg Msg(01:10000)
>>> _______| Msg Routing(To RC) Length(0) RequesterID(003:00:0) Tag(31)
>>> _______| Message Code(ERR_FATAL) LCRC(0xCDA53E96)
>>> _______| Time Stamp(0013 . 460 693 184 s)
>>> _______|_______________________________________________________________________
>>> Packet(178021) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1482)
>>> _______| CRC 16(0xA771) Time Stamp(0013 . 460 693 208 s)
>>> _______|_______________________________________________________________________
>>> Packet(178023) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(314)
>>> _______| CRC 16(0x4A59) Time Stamp(0013 . 460 693 280 s)
>>> _______|_______________________________________________________________________
>>> Packet(178024) Upstream 2.5(x1) TLP(1484) Msg Msg(01:10000)
>>> _______| Msg Routing(To RC) Length(0) RequesterID(003:00:0) Tag(31)
>>> _______| Message Code(ERR_FATAL) LCRC(0x86D9ACB6)
>>> _______| Time Stamp(0013 . 460 693 312 s)
>>> _______|_______________________________________________________________________
>>> Packet(178025) Upstream 2.5(x1) DLLP ACK AckNak_Seq_Num(315)
>>> _______| CRC 16(0xEB42) Time Stamp(0013 . 460 693 408 s)
>>> _______|_______________________________________________________________________
>>> Packet(178026) Upstream 2.5(x1) TLP(1485) Msg Msg(01:10000)
>>> _______| Msg Routing(To RC) Length(0) RequesterID(003:00:0) Tag(31)
>>> _______| Message Code(ERR_FATAL) LCRC(0xC5120A31)
>>> _______| Time Stamp(0013 . 460 693 632 s)
>>> _______|_______________________________________________________________________
>>> Packet(178028) Upstream 2.5(x1) TLP(1486) Msg Msg(01:10000)
>>> _______| Msg Routing(To RC) Length(0) RequesterID(003:00:0) Tag(31)
>>> _______| Message Code(ERR_FATAL) LCRC(0x41499062)
>>> _______| Time Stamp(0013 . 460 693 792 s)
>>> _______|_______________________________________________________________________
>>> Packet(178029) Downstream 2.5(x1) DLLP ACK AckNak_Seq_Num(1486)
>>> _______| CRC 16(0x231F) Time Stamp(0013 . 460 694 704 s)
>>> _______|_______________________________________________________________________
>>>
>>> --
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>>> .
>>>
>>
>> .
>>
>
> .
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