Re: sky2 crash

On Thu, 19 Oct 2006 08:10:33 -0700
Shane [off-list ref] wrote:

Hello,

I am experiencing an intermittent crash with a Gigabit
controler using the sky2 driver under load.  Confirmed on
2.6.19-rc2 but also present with 2.6.18.  After the lockup,
the system works as normally but the sky2 interface no
longer processes traffic.  Here's the printk output:
NETDEV WATCHDOG: eth0: transmit timed out
sky2 eth0: tx timeout
sky2 eth0: transmit ring 401 .. 378 report=403 done=403
sky2 status report lost?

See below, most likely lost IRQ.

BUG: soft lockup detected on CPU#0!
 [<781447d5>]  [<78128ad6>]  [<78113b91>]  [<7810390b>]
[<782b2477>]  [<f8986e43>]  [<7825fc69>]  [<7825fce5>]
[<78128a30>]  [<78124eb1>]  [<78124f49>]  [<78113b96>]
[<7810390b>]  [<78101265>]  [<78101281>]  [<78101d4f>]
[<7837578c>]  [<783751e0>]  =======================

And the controler:
03:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit
 Ethernet Controller (rev 22)
        Subsystem: Giga-byte Technology Marvell 88E8053 Gigabit Ethernet Control
ler (Gigabyte)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Step
ping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 218
        Region 0: Memory at e8000000 (64-bit, non-prefetchable) [size=16K]
        Region 2: I/O ports at 8000 [size=256]
        [virtual] Expansion ROM at 88000000 [disabled] [size=128K]
        Capabilities: [48] 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: [50] Vital Product Data
        Capabilities: [5c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/1
Enable+
                Address: 00000000fee0300c  Data: 4142
        Capabilities: [e0] Express Legacy Endpoint IRQ 0
                Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
                Device: Latency L0s unlimited, L1 unlimited
                Device: AtnBtn- AtnInd- PwrInd-
                Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
                Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
                Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s, Port 0
                Link: Latency L0s <256ns, L1 unlimited
                Link: ASPM Disabled RCB 128 bytes CommClk- ExtSynch-
                Link: Speed 2.5Gb/s, Width x1
        Capabilities: [100] Advanced Error Reporting

The system is a dual core Conroe system running with 2gb of
ram and a memory split of 2gb/2gb.  Kernel preemption is
voluntary.  I can disable preempt but it may take a day or
two for the lockup to show up again.

Also, the mtu on this iface is set to 9k btu and the lockup
seems more frequent at a good network load.

Shane

1. What is the interrupt usage: cat /proc/interrupts

2. Try with the workaround for lost IRQ's
	modprobe sky2 idle_timeout=100