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

Yea I saw the same issue on Gigabits ethernet. I raised the issue [1] to
the tg3 maintainers.

Do you use 5762?

[1] https://www.spinics.net/lists/netdev/msg538330.html

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/1447664

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

Status in linux package in Ubuntu:
Triaged
Status in linux package in Debian:
New

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. Call trace:
https://launchpadlibrarian.net/204185480/dmesg

When 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@ip.of.tg3:/my/test/file /tmp
done;

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

WORKAROUND: Add udev rule to make the changes permanent in /etc/udev/rules.d/80-tg3-fix.rules :
ACTION=="add", SUBSYSTEM=="net", ATTRS{vendor}=="0x14e4", ATTRS{device}=="0x1687", RUN+="/sbin/ethtool -K %k highdma off"

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
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /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
IwConfig:
 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
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed boot=casper maybe-ubiquity quiet splash ---
PulseList:
 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.
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-15-generic N/A
 linux-backports-modules-3.19.0-15-generic N/A
 linux-firmware 1.143
RfKill:

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1447664/+subscriptions