[Bugme-new] [Bug 10801] New: niu Sun Neptune 10G fiber card - "transmit timed out".

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=10801

           Summary: niu Sun Neptune 10G fiber card - "transmit timed out".
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.25.2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Network
        AssignedTo: jgarzik at pobox.com
        ReportedBy: jesper at krogh.cc


Latest working kernel version: ? 
Earliest failing kernel version: 2.6.24 (perhaps earlier)
Distribution: Ubuntu Hardy 
Hardware Environment: Sun Fire X4600 M2
Software Environment:
Problem Description:
The driver locks up the kernel and only a hard reboot can bring the system bag.
only message in the log is:
May 26 10:51:14 hest kernel: [1477079.785404] NETDEV WATCHDOG: eth4: transmit
timed out
.. many times pr. second. 

Steps to reproduce:
It seems to be reproducible by sending a lot of traffic (small packages)
through the card. But I've also hit it under normal production (an NFS server). 

Discussion: 
http://thread.gmane.org/gmane.linux.kernel/677545


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