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[Bug 1447664] Re: 14e4:1687 broadcom tg3 network driver disconnects under high load



I am running on 64-bit system. The machine didn't hiccup in ~36 hours so
we stopped testing there, otherwise I managed to bump into connection
drop within hours, 8 hours tops. For test I had scp copying data inbound
and outbound and in addition to that Youtube was playing in several
browser tabs. Higher memory usage seemed to trigger the bug faster.

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  14e4:1687 broadcom tg3 network driver disconnects under high load

Status in linux package in Ubuntu:

Bug description:
  The tg3 broadcom network driver that binds with chipset 5762 goes
  offline and unable to recover (even with tg3 watchdog timeout) when
  network transmit is under high load.  Then this happens, only a reboot
  would be able to fix it.  Sometimes, however, bringing the interface
  offline and online (via ifconfig) would recover networking.  I've also
  tested with the latest tg3 driver (dec 2014 version) and networking is
  still problematic.    I have also disabled TSO, GSO etc... with
  ethtool and the bug still surfaces.  This bug may be related to the
  integrated Firmware.

  Here is the procedure to replicate the issue because it is hard to
  replicate it under moderate network load.

  1. Bootup a machine with a broadcom 5762 NIC (ie. HP DeskElite 705) using a Ubuntu/Kubunu Live CD 14.04-15.04.
  2. from another machine: start 5 sessions, repetitively copy (scp with public key authentication) a 70 meg file back and forth to the tg3 machine in each session. (not sure if this is necessary)
  3. create a 1GB file on the tg3 machine, with something like dd if=/dev/urandom of=/my/test/file bs=1024 count=$((1024*1000))
  4. from another machine: repetitively scp copy that 1GB file from the tg3 machine. This can be done with something like:

  while [ 0 ]; do
     scp -i /my/scp/private.key user@xxxxx.tg3:/my/test/file /tmp

  Networking will mostly goes offline in about 10-30 minutes.

  Thank you

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-15-generic 3.19.0-15.15
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
   /dev/snd/controlC1:  kubuntu    3748 F.... pulseaudio
   /dev/snd/controlC0:  kubuntu    3748 F.... pulseaudio
  CasperVersion: 1.360
  Date: Thu Apr 23 11:16:24 2015
   eth0      no wireless extensions.

   lo        no wireless extensions.
  LiveMediaBuild: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Hewlett-Packard HP EliteDesk 705 G1 MT
   PATH=(custom, no user)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed boot=casper maybe-ubiquity quiet splash ---
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
   linux-restricted-modules-3.19.0-15-generic N/A
   linux-backports-modules-3.19.0-15-generic  N/A
   linux-firmware                             1.143

  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/22/2014
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L06 v02.15
  dmi.board.asset.tag: 2UA5041TG4
  dmi.board.name: 2215
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: 2UA5041TG4
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrL06v02.15:bd10/22/2014:svnHewlett-Packard:pnHPEliteDesk705G1MT:pvr:rvnHewlett-Packard:rn2215:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: HP EliteDesk 705 G1 MT
  dmi.sys.vendor: Hewlett-Packard

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