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[Kasper Dupont <814894@xxxxxxxxxxxxxxxxxx>]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1210092

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https://bugs.launchpad.net/bugs/814894

Title:
  [Fit-PC2i] Kernel hangs on high network throughput

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  If A Fit-PC2i receives more than 200Mbit/s of network traffic the
  kernel will hang. Cursor stops blinking, machine doesn't respond to
  keyboard and mouse input, no longer responds to ARP requests or any
  other network traffic.

  The problem is triggered every time a 10.04.3 system with kernel
  version 2.6.32-33-generic receives more than 200Mbit/s of network
  traffic. The bug affects both live system as well as fully installed
  system.

  The bug can be reproduced by downloading a 1GB file from a server on
  the LAN. The bug is only triggered if more than 200Mbit/s is
  transfered. If any link on the path between client and server is
  100Mbit/s or less the bug cannot be reproduced.

  The 8.04.4 live system is not affected by this problem and can receive
  600Mbit/s without problems on the same hardware.

  Marking this as a security problem because it can in principle be used
  to perform a DoS attack.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image (not installed)
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.32-33.70-generic 2.6.32.41+drm33.18
  Uname: Linux 2.6.32-33-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: MID [HDA Intel MID], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  kasperd    1453 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'MID'/'HDA Intel MID at 0xb0050000 irq 22'
     Mixer name	: 'Realtek ALC662 rev1'
     Components	: 'HDA:10ec0662,10ec0662,00100101'
     Controls      : 33
     Simple ctrls  : 19
  Date: Sat Jul 23 01:43:06 2011
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=e14584e1-caed-4150-9e25-e364d27bebe3
  InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1)
  MachineType: CompuLab CM-iAM/SBC-FITPC2i
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-33-generic root=UUID=8bf29c49-594d-41b8-8513-ac3cf4bf4e1b ro rootdir=lucid
  ProcEnviron:
   LANG=en_DK.utf8
   SHELL=/bin/bash
  RelatedPackageVersions: linux-firmware 1.34.7
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  StagingDrivers: rt2870sta
  Title: [STAGING]
  dmi.bios.date: 09/14/2010
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: NAPA0001.86C.0000.D.1009141059
  dmi.board.name: CM-iAM/SBC-FITPC2i
  dmi.board.vendor: Intel Corporation
  dmi.board.version: 1.x
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 1
  dmi.chassis.vendor: OEM
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrNAPA0001.86C.0000.D.1009141059:bd09/14/2010:svnCompuLab:pnCM-iAM/SBC-FITPC2i:pvrNotApplicable:rvnIntelCorporation:rnCM-iAM/SBC-FITPC2i:rvr1.x:cvnOEM:ct1:cvrN/A:
  dmi.product.name: CM-iAM/SBC-FITPC2i
  dmi.product.version: Not Applicable
  dmi.sys.vendor: CompuLab

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