netdev - Re: sky2 driver fails to handle "rx length error: status 0x5d60100 length 2982" gracefully

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Date:	Wed, 11 Aug 2010 22:36:57 -0700
From:	Maciej Żenczykowski <zenczykowski@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Linux NetDev <netdev@...r.kernel.org>
Subject: Re: sky2 driver fails to handle "rx length error: status 0x5d60100
 length 2982" gracefully

Here's lspci (it's an otherwise stock MacBook Pro 4,1 with a
non-standard wireless atheros mini-pci nic, replacing the std
broadcom.)

$ lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory
Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI
Express Root Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB
UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB
UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2
EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 1 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 3 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 5 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB
UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB
UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB
UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2
EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface
Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E)
IDE Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E)
SATA IDE Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation G84 [GeForce
8600M GT] (rev a1)
0b:00.0 Network controller: Atheros Communications Inc. AR928X
Wireless Network Adapter (PCI-Express) (rev 01)
0c:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8058
PCI-E Gigabit Ethernet Controller (rev 13)
0d:03.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b
Link Layer Controller (rev 02)

(more verbose lspci included in bugzilla entry)

At least one other person has seen this on a desktop non-mac machine
(see bugzilla) entry.
What would you like from dmesg?
Is the following enough?

Aug  9 12:09:11 nike kernel: sky2: driver version 1.27
Aug  9 12:09:11 nike kernel: sky2 0000:0c:00.0: PCI INT A -> GSI 17
(level, low) -> IRQ 17
Aug  9 12:09:11 nike kernel: sky2 0000:0c:00.0: Yukon-2 EC Ultra chip revision 3
Aug  9 12:09:11 nike kernel: sky2 0000:0c:00.0: eth0: addr 00:1f:5b:xx:xx:xx
...
Aug  9 12:09:22 nike kernel: sky2 0000:0c:00.0: eth0: enabling interface
Aug  9 12:09:22 nike kernel: ADDRCONF(NETDEV_UP): eth0: link is not ready
...
Aug  9 12:09:25 nike kernel: sky2 0000:0c:00.0: eth0: Link is up at
1000 Mbps, full duplex, flow control rx
Aug  9 12:09:25 nike kernel: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
...
Aug 11 16:21:19 nike kernel: sky2 0000:0c:00.0: eth0: rx length error:
status 0x5d60100 length 2982
Aug 11 16:21:27 nike kernel: eth0: hw csum failure.
...

I'd just like to point out that this has happened something like 5
times in the past 30 days on a machine which is on 24/7 with wired
ethernet plugged in nearly 100% of the time.
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