netdev - Re: sky2 oops in 2.6.26-rc3

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Date:	Sun, 25 May 2008 11:56:44 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Mikael Pettersson <mikpe@...uu.se>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: sky2 oops in 2.6.26-rc3

On Sun, 25 May 2008 19:27:29 +0200 (MEST)
Mikael Pettersson <mikpe@...uu.se> wrote:

> Shortly after booting 2.6.26-rc3 on my ASUS P5B-E Plus
> today, the kernel oopsed in sky2_mac_intr, leaving the
> system totally dead. I had to copy the oops manually:
> 
> Call trace:
>   sky2_hw_error
>   sky2_poll
>   run_rebalance_domains
>   net_rx_action
>   __do_softirq
>   smp_apic_timer_interrupt
>   mwait_idle
>   apic_timer_interrupt
>   mwait_idle
>   mwait_idle
>   cpu_idle
> EIP: sky2_mac_intr+0x32
> 
> lspci -vvxxx on the sky2 chip shows:
> 
> 02:00.0 Ethernet controller: Marvell Technology Group Ltd. Unknown device 4364 (rev 12)
> 	Subsystem: ASUSTeK Computer Inc. Unknown device 81f8
> 	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- 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 17
> 	Region 0: Memory at ff9fc000 (64-bit, non-prefetchable) [size=16K]
> 	Region 2: I/O ports at c800 [size=256]
> 	Expansion ROM at ff9c0000 [disabled] [size=128K]
> 	Capabilities: [48] Power Management version 3
> 		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: 64bit+ Queue=0/0 Enable-
> 		Address: 0000000000000000  Data: 0000
> 	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 L1, 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
> 00: ab 11 64 43 07 00 10 00 12 00 00 02 08 00 00 00
> 10: 04 c0 9f ff 00 00 00 00 01 c8 00 00 00 00 00 00
> 20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 f8 81
> 30: 00 00 9c ff 48 00 00 00 00 00 00 00 0a 01 00 00
> 40: 00 00 f0 01 00 80 a0 01 01 50 03 fe 00 20 00 13
> 50: 03 5c 00 80 00 00 00 01 00 00 00 01 05 e0 80 00
> 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 70: 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 80: 00 00 00 00 00 70 00 00 00 00 00 00 82 a8 e8 00
> 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> c0: 00 00 00 00 00 00 00 00 00 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: 10 00 11 00 c0 8f 00 00 00 20 19 00 11 ac 07 00
> f0: 48 00 11 10 00 00 00 00 00 00 00 00 00 00 00 00
> 
> This is the first time I've seen this problem.
> 
> I do have a recurring problem where the sky2 chip sometimes
> isn't detected on a cold boot. A reboot typically solves that.
> 
> /Mikael

sky2_hw_error prints information in log so dmesg output would be helpful.
But it means the hardware is sick (like bad DMA), so there isn't much
you can do.  If possible, see if either the vendor sk98lin driver or windows
works on this hardware.
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