netdev - RE: [REGRESSION] e1000e stopped working

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Date:	Sun, 04 Jul 2010 03:41:46 +0300
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Pieper, Jeffrey E" <jeffrey.e.pieper@...el.com>
Subject: RE: [REGRESSION] e1000e stopped working

On Thu, 2010-07-01 at 01:59 +0300, Maxim Levitsky wrote:
> On Tue, 2010-06-29 at 12:37 -0600, Tantilov, Emil S wrote:
> > Maxim Levitsky wrote:
> > > On Mon, 2010-06-28 at 18:09 -0700, Allan, Bruce W wrote:
> > >> On Monday, June 28, 2010 10:14 AM, Maxim Levitsky wrote:
> > >>> On Mon, 2010-06-28 at 10:04 -0700, Allan, Bruce W wrote:
> > >>>> On Sunday, June 27, 2010 10:47 AM, Maxim Levitsky wrote:
> > >>>>> On Sun, 2010-06-27 at 20:43 +0300, Maxim Levitsky wrote:
> > >>>>>> On Sun, 2010-06-27 at 20:29 +0300, Maxim Levitsky wrote:
> > >>>>>>> On Sun, 2010-06-27 at 20:27 +0300, Maxim Levitsky wrote:
> > >>>>>>>> Just that,
> > >>>>>>>> 
> > >>>>>>>> It doesn't receive anything from my internet router during
> > >>>>>>>> DHCP. 
> > >>>>>>>> 
> > >>>>>>>> 
> > >>>>>>>> 00:19.0 Ethernet controller [0200]: Intel Corporation 82566DC
> > >>>>>>>> 	Gigabit Network Connection [8086:104b] (rev 02) Subsystem:
> > >>>>>>>> 	Intel Corporation Device [8086:0001] 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 Interrupt: pin A routed to IRQ 47 Region 0:
> > >>>>>>>> 	Memory at 50300000 (32-bit, non-prefetchable) [size=128K]
> > >>>>>>>> 	Region 1: Memory at 50324000 (32-bit, non-prefetchable)
> > >>>>>>>> 		[size=4K] Region 2: I/O ports at 30e0 [size=32]
> > >>>>>>>> 		Capabilities: [c8] Power Management version 2 Flags: PMEClk-
> > >>>>>>>> 	DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
> > >>>>>>>> 		Status: D0 PME-Enable- DSel=0 DScale=1 PME- Capabilities:
> > >>>>>>>> 	[d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
> > >>>>>>>> 	Enable+ Address: 00000000fee0100c  Data: 41c9 Kernel driver
> > >>>>>>>> in use: e1000e Kernel modules: e1000e 
> > >>>>>>>> 
> > >>>>>>>> I use vanilla tree, commit
> > >>>>>>>> bf2937695fe2330bfd8933a2310e7bdd2581dc2e
> > >>>>>>>> 
> > >>>>>>>> 
> > >>>>>>>> Best regards,
> > >>>>>>>> 	Maxim Levitsky
> > >>>>>>>> 
> > >>>>>>> 
> > >>>>>>> It appears to work now after reboot.
> > >>>>>>> Will keep a look for this.
> > >>>>>>> 
> > >>>>>>> Disregard for now.
> > >>>>>> 
> > >>>>>> 
> > >>>>>> Just s2ram cycle, problem is back.
> > >>>>>> Did full reboot (power off then on), same thing card doesn't
> > >>>>>> work... 
> > >>>>>> 
> > >>>>> 
> > >>>>> Yep, s2ram sometimes 'fixes', sometimes breaks the card.
> > >>>>> Something got broken in device initialization path.
> > >>>>> 
> > >>>>> Best regards,
> > >>>>>  	Maxim Levitsky
> > >>>> 
> > >>>> What distro are you using?  If RedHat, since you are using DHCP
> > >>>> will you please try putting a "LINKDELAY=10" in the
> > >>>> /etc/sysconfig/network-scripts/ifcfg-ethX config file.
> > >>>> 
> > >>> I use ubuntu 9.10
> > >>> 
> > >>>> Is there anything in the system log that might help narrow down the
> > >>>> issue?
> > >>> 
> > >>> Nothing, really nothing.
> > >>> It seems to detect link, dhcp client sends requests, but doesn't
> > >>> recieve a thing (even tried promisc mode - doesn't help)
> > >>> 
> > >>> 
> > >>> 
> > >>> Best regards,
> > >>> 	Maxim Levitsky
> > >> 
> > >> Since you say this is a regression, when did this last work for you
> > >> without this problem, i.e. which distro, which kernel? 
> > > 
> > > I always compile kernel, and last kernel I compiled here was vanilla
> > > 2.6.33-rc4.
> > > It works just fine.
> > > 
> > > I mostly use my laptop, and therefore didn't update kernel on my
> > > desktop for long time.
> > > 
> > > If I find some free time I try to bisect the problem.
> > 
> > Could you provide some additional info about your setup:
> > ethtool -e eth0
> > ethtool -d eth0
> > kernel config (if possible)
> > 
> > What is the model of your system/MB?
> 
> 
> Sure,
> 
> 
> My motherboard on this system is Intel DG965RY
> 
> The bug in about 90% reproducible.
> Doing several s2ram cycles, its possible to catch a moment when the
> device starts working.
> 

Just tested 2.6.34, and it works, so this is 2.6.35 regression.

Best regards,
	Maxim Levitsky

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