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[a1291762 <1547838@xxxxxxxxxxxxxxxxxx>]

Note if I plug in the device but don't send traffic over it, the system
manages to remain running for longer. I brought the interface up with a
static IP and the system remained up for well over 5 minutes before it
died. I was monitoring ifconfig and it had around 30 Rx packets and 300
Tx packets. I'm not sure what caused that, since it was static and no
traffic should have been going out. With DHCP, pings, etc. going over
the interface it kills the machine much quicker (all the previous
crashes involved me sending data over the link, mostly just pings and
whatever DHCP sends).

** Attachment added: "netconsole4.log"
   https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1547838/+attachment/4576588/+files/netconsole4.log

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https://bugs.launchpad.net/bugs/1547838

Title:
  ADMtek ADM8511 "Pegasus II" USB Ethernet causes oops

Status in linux-lts-vivid package in Ubuntu:
  New

Bug description:
  This is a rather old USB ethernet adapter. It worked fine for me with
  older distributions (including Ubuntu 10.04). I noticed it causing
  problems after upgrading to 14.04 and stopped using it as a result
  (since I needed reliable USB ethernet for work). I was also not
  completely sure if it was this device causing the issue or interplay
  between this device and a number of other networking USB devices that
  were used at work.

  I'd like to use this ethernet adapter at home but the machine is
  running Ubuntu 14.04 and the issue persists.

  I have collected some information that might help. I'm happy to try
  more things to collect information if that will help.

  I'm running Ubuntu 14.04 server 64-bit. I just rebooted so I'm running
  the latest updates.

  I was told to run ubuntu-bug linux but I'm not sure how much useful
  stuff is included in that. I'm including the kernel log which has some
  bad stuff happening in it. Not sure if it got the system-freezing oops
  or just the errors leading up to that.

  It feels like a bug in the driver that corrupts memory because I see
  issues with network-related things (eg. a ping crashed, but the next
  ping didn't), leading to a full-system freeze.

  This machine has been happily running Ubuntu for a looong time (though
  it was only recently upgraded to Ubuntu 14.04, previously it had been
  running 10.04). I have not had stability issues with the machine but
  plugging in the USB Ethernet reliably makes it freeze within minutes.
  The symptoms also match what I saw on my machine at work.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.19.0-49-generic 3.19.0-49.55~14.04.1
  ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
  Uname: Linux 3.19.0-49-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  Date: Sat Feb 20 21:23:29 2016
  InstallationDate: Installed on 2015-12-31 (50 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: linux-lts-vivid
  UpgradeStatus: No upgrade log present (probably fresh install)

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