Comment 39 for bug 1447664

Hello, I would like to confirm that it's useful to file a new bug for this
issue. For me, the problem I'm having is the same as we are discussing in
this thread. Would it be just a duplicate?

Maybe I'm missing something, because I don't know the details of the bug
hunting process for Ubuntu.

Can you please confirm I should open it?

In this case, I can add a detailed description and dmesg logs, with debug
on and the timeout error message inside.

Anyway, I want to report advances in this problem. I have tested a few
kernels and patches in the last weeks, and have found one combination that
does solve the issue.

I also checked that this patch is not yet merged into the latest vanilla
stable kernel, version 4.15, released three days ago. But it patches and
works also for 4.15, which is just great (at last for me).

Will send the details later (or tomorrow), as soon as I get back to my
computer.

Paulo

On Jan 29, 2018 12:54 AM, "Kai-Heng Feng" <email address hidden>
wrote:

> First please file an upstream bug at https://bugzilla.kernel.org/
> Product: Drivers
> Component: Network
>
> Also, looks like it's a Ubuntu certified hardware, let me ask around.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> 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 <email address hidden>:/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
>
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