netdev - Re: via-velocity: corrupted mac, deadlock on link

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Message-ID: <20110106125822.70a85e0a@nehalam>
Date:	Thu, 6 Jan 2011 12:58:22 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Janne Karhunen <janne.karhunen@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: via-velocity: corrupted mac, deadlock on link

On Thu, 6 Jan 2011 13:42:03 +0200
Janne Karhunen <janne.karhunen@...il.com> wrote:

> Hey,
> 
> Just got my hands on via-velocity pci-e card and tried to give it
> a go on new Asus Nvidia Ion2 board. Driver loads fine and everything
> seems good until device gets a link - kernel deadlocks instantly. During
> bootup hang seems to happen when persistent-net rules rename device
> to eth1, after bootup instantly when cable is plugged (first interrupt?).
> 
> Any other quick suggestions other than to throw it away as DOA?
> 
> Linux rivendell 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 10:18:49
> UTC 2010 i686 GNU/Linux
> 
> eth1      Link encap:Ethernet  HWaddr 00:00:00:00:00:04  (??????????)
> 
> [    1.171890] eth0: VIA Networking Velocity Family Gigabit Ethernet Adapter
> [   18.468029] via-velocity 0000:0b:00.0: BAR 0: set to [io
> 0xe800-0xe8ff] (PCI address [0xe800-0xe8ff]
> [   18.468048] via-velocity 0000:0b:00.0: BAR 1: set to [mem
> 0xfbfffc00-0xfbfffcff 64bit] (PCI address [0xfbfffc00-0xfbfffcff]
> 
> 0b:00.0 Ethernet controller: VIA Technologies, Inc.
> VT6120/VT6121/VT6122 Gigabit Ethernet Adapter (rev 82)
> 
>  16:          0          0          0          0   IO-APIC-fasteoi
> uhci_hcd:usb5
>  17:          0          0          0          0   IO-APIC-fasteoi   eth1
>  18:       4639       4703       4637       4690   IO-APIC-fasteoi
> uhci_hcd:usb4, ahci, hda_intel, nvidia
>  19:          0          0          0          1   IO-APIC-fasteoi
> uhci_hcd:usb3, xhci_hcd:usb6
>  23:      14772      14895      14872      14730   IO-APIC-fasteoi
> ehci_hcd:usb1, uhci_hcd:usb2
>  40:          0          0          0          0   PCI-MSI-edge      pciehp
>  41:          0          0          0          0   PCI-MSI-edge      pciehp
>  42:          0          0          0          0   PCI-MSI-edge      pciehp
>  43:          0          0          0          0   PCI-MSI-edge      pciehp
>  52:      10951      10844      10829      10926   PCI-MSI-edge      eth0

To debug, remove the udev rule that does renaming
  cd /lib/udev
  mkdir save; mv rules.d/75-persistent-net-generator-rules save
and remove any rules
  rm /etc/udev/70-persistent-net.rules

Then after bootup you can debug problem.
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