trap 12: page fault while in kernel mode on 8.0-RELEASE (possibly bge(4) related)

[Slawa Olhovchenkov]

On Fri, Feb 19, 2010 at 11:03:59AM -0800, Pyun YongHyeon wrote:

> On Fri, Feb 19, 2010 at 03:24:15PM +0300, Slawa Olhovchenkov wrote:
> > On Fri, Feb 19, 2010 at 08:51:29AM +0300, Slawa Olhovchenkov wrote:
> > 
> > > On Thu, Feb 18, 2010 at 04:19:13PM -0800, Pyun YongHyeon wrote:
> > > 
> > > > 
> > > > I'm still not sure whether the panic is related with bge(4) but
> > > > there are a couple of missing workaround for PCIX BCM5704 silicon
> > > > bug in bge(4). Did you also see the panic before updating to
> > > > stable/8?
> > > 
> > > Before updating to stable/8 2010-Feb-16 I see network freez on stable/8
> > > 2009-Sep -- bge stop receiving packets (by tcpdump), after aprox. 40-50
> > > days uptime.
> > > 
> > > 
> > > > Anyway, try attached patch and let me know how it works.
> > > 
> > > Thanks, I try.
> > > 
> > 
> > I don't get trap after 2 hour, but already see next trouble:
> > 
> > ===
> > PING 10.200.0.1 (10.200.0.1): 56 data bytes
> > 
> > --- 10.200.0.1 ping statistics ---
> > 100 packets transmitted, 97 packets received, 3.0% packet loss
> > round-trip min/avg/max/stddev = 0.188/0.268/0.356/0.044 ms
> > ===
> > 
> > w/o patch, but witch fresh source I see same trouble: after 12 hour 7% lost.
> > netstat -i don't show any errors.
> 
> I think BCM5704 supports HW MAC statistics counter. Try extract it
> with "sysctl dev.bge.0.stats". It will give you much more
> information.

dev.bge.0.stats.FramesDroppedDueToFilters: 0
dev.bge.0.stats.DmaWriteQueueFull: 0
dev.bge.0.stats.DmaWriteHighPriQueueFull: 0
dev.bge.0.stats.NoMoreRxBDs: 0
dev.bge.0.stats.InputDiscards: 0
dev.bge.0.stats.InputErrors: 0
dev.bge.0.stats.RecvThresholdHit: 561594
dev.bge.0.stats.DmaReadQueueFull: 41972
dev.bge.0.stats.DmaReadHighPriQueueFull: 0
dev.bge.0.stats.SendDataCompQueueFull: 0
dev.bge.0.stats.RingSetSendProdIndex: 705180
dev.bge.0.stats.RingStatusUpdate: 950302
dev.bge.0.stats.Interrupts: 950302
dev.bge.0.stats.AvoidedInterrupts: 0
dev.bge.0.stats.SendThresholdHit: 0
dev.bge.0.stats.rx.Octets: 196013834
dev.bge.0.stats.rx.Fragments: 0
dev.bge.0.stats.rx.UcastPkts: 582767
dev.bge.0.stats.rx.MulticastPkts: 0
dev.bge.0.stats.rx.FCSErrors: 0
dev.bge.0.stats.rx.AlignmentErrors: 0
dev.bge.0.stats.rx.xonPauseFramesReceived: 0
dev.bge.0.stats.rx.xoffPauseFramesReceived: 0
dev.bge.0.stats.rx.ControlFramesReceived: 0
dev.bge.0.stats.rx.xoffStateEntered: 0
dev.bge.0.stats.rx.FramesTooLong: 0
dev.bge.0.stats.rx.Jabbers: 0
dev.bge.0.stats.rx.UndersizePkts: 0
dev.bge.0.stats.rx.inRangeLengthError: 0
dev.bge.0.stats.rx.outRangeLengthError: 0
dev.bge.0.stats.tx.Octets: 654902713
dev.bge.0.stats.tx.Collisions: 0
dev.bge.0.stats.tx.XonSent: 0
dev.bge.0.stats.tx.XoffSent: 0
dev.bge.0.stats.tx.flowControlDone: 0
dev.bge.0.stats.tx.InternalMacTransmitErrors: 0
dev.bge.0.stats.tx.SingleCollisionFrames: 0
dev.bge.0.stats.tx.MultipleCollisionFrames: 0
dev.bge.0.stats.tx.DeferredTransmissions: 0
dev.bge.0.stats.tx.ExcessiveCollisions: 0
dev.bge.0.stats.tx.LateCollisions: 0
dev.bge.0.stats.tx.UcastPkts: 699931
dev.bge.0.stats.tx.MulticastPkts: 0
dev.bge.0.stats.tx.BroadcastPkts: 492
dev.bge.0.stats.tx.CarrierSenseErrors: 0
dev.bge.0.stats.tx.Discards: 0
dev.bge.0.stats.tx.Errors: 0

dev.bge.1.stats.FramesDroppedDueToFilters: 0
dev.bge.1.stats.DmaWriteQueueFull: 0
dev.bge.1.stats.DmaWriteHighPriQueueFull: 0
dev.bge.1.stats.NoMoreRxBDs: 0
dev.bge.1.stats.InputDiscards: 0
dev.bge.1.stats.InputErrors: 0
dev.bge.1.stats.RecvThresholdHit: 2889283
dev.bge.1.stats.DmaReadQueueFull: 79
dev.bge.1.stats.DmaReadHighPriQueueFull: 0
dev.bge.1.stats.SendDataCompQueueFull: 0
dev.bge.1.stats.RingSetSendProdIndex: 2861918
dev.bge.1.stats.RingStatusUpdate: 5518912
dev.bge.1.stats.Interrupts: 5518912
dev.bge.1.stats.AvoidedInterrupts: 0
dev.bge.1.stats.SendThresholdHit: 0
dev.bge.1.stats.rx.Octets: 930931282
dev.bge.1.stats.rx.Fragments: 1
dev.bge.1.stats.rx.UcastPkts: 2956515
dev.bge.1.stats.rx.MulticastPkts: 0
dev.bge.1.stats.rx.FCSErrors: 18
dev.bge.1.stats.rx.AlignmentErrors: 0
dev.bge.1.stats.rx.xonPauseFramesReceived: 0
dev.bge.1.stats.rx.xoffPauseFramesReceived: 0
dev.bge.1.stats.rx.ControlFramesReceived: 0
dev.bge.1.stats.rx.xoffStateEntered: 0
dev.bge.1.stats.rx.FramesTooLong: 0
dev.bge.1.stats.rx.Jabbers: 0
dev.bge.1.stats.rx.UndersizePkts: 0
dev.bge.1.stats.rx.inRangeLengthError: 0
dev.bge.1.stats.rx.outRangeLengthError: 0
dev.bge.1.stats.tx.Octets: 305055886
dev.bge.1.stats.tx.Collisions: 0
dev.bge.1.stats.tx.XonSent: 0
dev.bge.1.stats.tx.XoffSent: 0
dev.bge.1.stats.tx.flowControlDone: 0
dev.bge.1.stats.tx.InternalMacTransmitErrors: 0
dev.bge.1.stats.tx.SingleCollisionFrames: 0
dev.bge.1.stats.tx.MultipleCollisionFrames: 0
dev.bge.1.stats.tx.DeferredTransmissions: 0
dev.bge.1.stats.tx.ExcessiveCollisions: 0
dev.bge.1.stats.tx.LateCollisions: 0
dev.bge.1.stats.tx.UcastPkts: 2860335
dev.bge.1.stats.tx.MulticastPkts: 0
dev.bge.1.stats.tx.BroadcastPkts: 447
dev.bge.1.stats.tx.CarrierSenseErrors: 0
dev.bge.1.stats.tx.Discards: 0
dev.bge.1.stats.tx.Errors: 0