** Tags added: cscc
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https://bugs.launchpad.net/bugs/1794477
Title:
Accelerated networking (SR-IOV VF) broken in 18.10 daily
Status in linux package in Ubuntu:
This bug was erroneously marked for verification in bionic; verification
is not required and verification-needed-bionic is being removed.
** Tags removed: verification-needed-bionic
** Tags added: kernel-fixup-verification-needed-bionic verification-done-bionic
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This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag
This bug was fixed in the package linux-azure - 4.18.0-1006.6
---
linux-azure (4.18.0-1006.6) cosmic; urgency=medium
* linux-azure: 4.18.0-1006.6 -proposed tracker (LP: #1805244)
* Accelerated networking (SR-IOV VF) broken in 18.10 daily (LP: #1794477)
- [Packaging] Move
** Changed in: linux (Ubuntu Cosmic)
Status: New => Invalid
** Changed in: linux (Ubuntu)
Status: Fix Committed => Invalid
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This bug was fixed in the package linux-azure - 4.18.0-1006.6
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linux-azure (4.18.0-1006.6) cosmic; urgency=medium
* linux-azure: 4.18.0-1006.6 -proposed tracker (LP: #1805244)
* Accelerated networking (SR-IOV VF) broken in 18.10 daily (LP: #1794477)
- [Packaging] Move
This does look resolved on WS2016 and Azure.
However, SR-IOV is broken in another way now on WS2019.
Affected proposed kernels:
- cosmic proposed
- bionic proposed edge - 4.18 based.
Tested this with cosmic linux-azure 4.18.0.1006.7 from proposed, same vhd:
- SR-IOV with Mellanox CX3 works fine
** No longer affects: linux (Ubuntu Cosmic)
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu)
Status: Confirmed => Fix Committed
There's a second issue that also affects cosmic/linux-azure:
In 4.18, the module pci-hyperv moved from "drivers/pci/host/pci-
hyperv.ko" to "./drivers/pci/controller/pci-hyperv.c". That caused the
module to be included to the linux-modules-extra instead of the linux-
modules package.
I'm
** Changed in: linux (Ubuntu Cosmic)
Status: Fix Committed => Confirmed
** Changed in: linux-azure (Ubuntu)
Status: Fix Committed => Confirmed
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Small correction:
4.18.0-1005 is already built on the CKT PPA:
https://launchpad.net/~canonical-kernel-
team/+archive/ubuntu/ppa/+packages?field.name_filter=azure-
edge_filter=published_filter=bionic
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4.15.0-1005 is already built on the CKT PPA:
https://launchpad.net/~canonical-kernel-
team/+archive/ubuntu/ppa/+packages?field.name_filter=azure-
edge_filter=published_filter=bionic
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Hi Marcelo,
Maybe I'm doing something wrong but I still don't see the Mellanox
devices with this 4.18.0-1005 kernel from the CKT PPA:
ubuntu@lp1794477:~$ sudo add-apt-repository ppa:canonical-kernel-team/ppa
ubuntu@lp1794477:~$ sudo apt install linux-azure-edge
ubuntu@lp1794477:~$ sudo
** Changed in: linux-azure (Ubuntu)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu)
Importance: Critical => High
** Changed in: linux (Ubuntu Cosmic)
Importance: Critical => High
** Changed in: linux-azure (Ubuntu)
Importance: Critical => High
** Changed in:
We already have identified the problem with bionic/azure-edge
4.18.0-1004. There was an issue on this version packaging that caused
most of the modules to be included to the linux-modules-extra package
instead of the linux-modules package.
The azure kernels do not install the linux-modules-extra
bionic-tree/4.18.0-1004 with all the packages:
$ sudo dpkg -i
linux-modules-4.18.0-1004-azure_4.18.0-1004.4~18.04.1LP1794477_amd64.deb \
linux-modules-extra-4.18.0-1004-azure_4.18.0-1004.4~18.04.1LP1794477_amd64.deb
\
I built one more 1004 kernel from the bionic tree, but this time
including all of the packages. This kernel can also be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1794477/bionic-tree/4.18.0-1004
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bionic-tree/4.18.0-1004:
ubuntu@lp1794477:~$ uname -a
Linux lp1794477 4.18.0-1004-azure #4~18.04.1 SMP Wed Nov 21 20:07:48 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
ubuntu@lp1794477:~$ dmesg | grep -i mella
[6.337786] mlx4_core: Mellanox ConnectX core driver v4.0-0
[6.374260]
I built the 4.18.0-1004 kernel, but this time using the bionic tree and
azure-edge-next branch.
This kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1794477/bionic-tree/4.18.0-1004
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4.18.0-1004:
ubuntu@lp1794477:~$ uname -a
Linux lp1794477 4.18.0-1004-azure #5~lp1794477 SMP Wed Nov 21 19:19:16 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
ubuntu@lp1794477:~$ dmesg | grep -i mella
[6.009608] mlx4_core: Mellanox ConnectX core driver v4.0-0
[6.045063] mlx4_ib_add: mlx4_ib:
I built the 4.18.0-1004 kernel, which can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1794477/4.18.0-1004
Can you give this one a test?
If this kernel does not exhibit the bug, I'll start using the bionic azure-edge
tree. These prior test kernels are with the azure cosmic
4.18.0-1003:
ubuntu@lp1794477:~$ uname -a
Linux lp1794477 4.18.0-1003-azure #4~lp1794477 SMP Wed Nov 21 18:32:18 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
ubuntu@lp1794477:~$ dmesg | grep -i mella
[5.701478] mlx4_core: Mellanox ConnectX core driver v4.0-0
[5.732267] mlx4_ib_add: mlx4_ib:
I built the 4.18.0-1003 kernel, which can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1794477/4.18.0-1003
Can you give this one a test?
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4.18.0-1002:
ubuntu@lp1794477:~$ uname -a
Linux lp1794477 4.18.0-1002-azure #3~lp1794477 SMP Wed Nov 21 16:41:12 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
ubuntu@lp1794477:~$ dmesg | grep -i mella
[5.723350] mlx4_core: Mellanox ConnectX core driver v4.0-0
[5.751281] mlx4_ib_add: mlx4_ib:
4.18.0-1001:
ubuntu@lp1794477:~$ uname -a
Linux lp1794477 4.18.0-1001-azure #2~lp1794477 SMP Wed Nov 21 16:06:45 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
ubuntu@lp1794477:~$ dmesg | grep -i mella
[5.701988] mlx4_core: Mellanox ConnectX core driver v4.0-0
[5.730013] mlx4_ib_add: mlx4_ib:
To try and speed up the kernel build time, I already built 4.18.0-1002
as well. There are now two 4.18 kernels available for testing:
4.18.0-1001: http://kernel.ubuntu.com/~jsalisbury/lp1794477/4.18.0-1001/
4.18.0-1002: http://kernel.ubuntu.com/~jsalisbury/lp1794477/4.18.0-1002/
--
You
Thanks for testing, David. That means this regression was introduced in
4.18 and narrows down the number of commits we need to bisect through.
Can you next test the first 4.18 based kernel in the azure tree:
http://kernel.ubuntu.com/~jsalisbury/lp1794477
Install the .debs in the same order as
I can see the Mellanox devices with that 4.17.0-1001-azure kernel.
I installed the new kernel:
sudo dpkg -i linux-
modules-4.17.0-1001-azure_4.17.0-1001.2~lp1794477_amd64.deb linux-
modules-extra-4.17.0-1001-azure_4.17.0-1001.2~lp1794477_amd64.deb linux-
For this particular bug, the tools packages are probably not needed.
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Title:
Accelerated networking (SR-IOV VF) broken in
You at least need to install the linux-modules, linux-modules-extra and
linux-image-unsigned .deb packages in that order. You should be able to
do that with 'sudo dpkg -i package_name.deb'
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These are the packages I see installed out of the box in the instance:
ubuntu@lp1794477:~/41701001$ dpkg -l | grep 4.15.0-1030.31 | sort
ii linux-azure-cloud-tools-4.15.0-1030 4.15.0-1030.31
amd64Linux kernel version specific cloud tools for version
Hi Joseph,
Is there a special way I should install these? I tried:
sudo dpkg -i *
But I get:
Selecting previously unselected package linux-azure-cloud-tools-4.17.0-1001.
(Reading database ... 56547 files and directories currently installed.)
Preparing to unpack
Hi David,
Before starting a bisect, we can try to narrow down the exact versions
first. To start, I built a 4.17 kernel based on the azure tree.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1794477
Can you test this kernel and see if it exhibits this bug?
--
Hi Chris. I spoke to Joseph and I think we have everything we need to
start the bisect. We'll get started and keep you posted.
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I can reproduce the issue in Azure with Ubuntu 18.04 and the kernel
linux-azure-edge 4.18.0.1004.5 from bionic-proposed.
I use an instance of type "Standard F4s_v2 (4 vcpus, 8 GB memory)"
I launch the instance and get the 4.15.0-1030-azure kernel:
$ lsb_release -a
No LSB modules are available.
Thanks for testing. That's interesting because both of those kernels
are not the custom azure kernel and you say you don't see this bug on
the 4.15 azure kernel. However, it is seen on the non-azure 4.15
kernel.
Can you see if this kernel exhibits the bug:
"Just to confirm, the 4.18 kernel you see this bug in is the standard Ubuntu
kernel?"
> A: this first was seen in the daily cosmic 18.10 images (before RTM), and
> when azure-edge kernels were created we've seen this problem on those as well.
That being azure-edge for Bionic for example, not
** Changed in: linux (Ubuntu Cosmic)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
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** Changed in: linux-azure (Ubuntu)
Importance: High => Critical
** Changed in: linux (Ubuntu Cosmic)
Importance: High => Critical
** Changed in: linux (Ubuntu)
Importance: High => Critical
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For 4.18 based azure images, there are two repos:
lp:~canonical-kernel/ubuntu/+source/linux-azure/+git/cosmic
or the azure-edge-next branch in the bionic azure tree.
I'm going to review both to see if the commits going from 4.15 to 4.18
are linear. If they are, we may be able to bisect.
--
Just to confirm, the 4.18 kernel you see this bug in is the standard
Ubuntu kernel?
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Title:
Accelerated networking (SR-IOV
Also, the Ubuntu kernel trees are located at:
4.15: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/
4.18: git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/cosmic/
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Regarding my comment #9, I read your comment #7 incorrectly. I
literally read you don't know how a bisect would work. I understand
clearly now.
We still should be able to bisect using the azure tree. I'll review the
commits between 4.15 and 4.18 and see if anything sticks out.
--
You
I can build you kernels for the bisect. You test the kernel and post
back if it has the bug or not. Then I will build the next kernel based
on your results. Repeat.
To start a bisect, we first need to identify the last good kernel
version and the first bad one. Can you test the following
If you can point me to the ubuntu kernel sources where we can see how
the 4.15 and 4.18 kernels are found then I can check if a bisect would
be possible as such.
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What I know is that this is working in azure kernels 4.15 series, but
not in 4.18 since we got the dailies with it for Cosmic.
>From the ubuntu kernel tree if these versions are separate branches then
I don't know how a bisect would work...
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That is if this is a regression. Was this working on a prior kernel
version?
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Title:
Accelerated networking (SR-IOV VF)
Do you have a way to test some kernels out? If so, we could perform a
kernel bisect to narrow down the commit that introduced this.
** Tags removed: kernel-da-key
** Tags added: kernel-key
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** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-azure (Ubuntu Cosmic)
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Bionic)
Importance: Undecided
This is a blocked for 4.18 in 18.04. This bug should be extended to
bionic "linux-azure"
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Title:
Accelerated networking (SR-IOV VF)
Bug is now carried in linux-azure-edge kernels on the 4.18 tree, these
should not be published to release further from proposed.
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** Summary changed:
- [Azure] Accelerated networking broken in 18.10 daily
+ Accelerated networking (SR-IOV VF) broken in 18.10 daily
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