*** This bug is a duplicate of bug 1813244 ***
https://bugs.launchpad.net/bugs/1813244
** Tags added: cscc
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Title:
openvswitch: kernel oops
*** This bug is a duplicate of bug 1813244 ***
https://bugs.launchpad.net/bugs/1813244
** This bug has been marked a duplicate of bug 1813244
systemd cause kernel trace "BUG: unable to handle kernel paging request at
6db23a14" on Cosmic i386
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I've done a test with the fix from bug #1813244 and the problem doesn't
seem to happen. Probably a duplicate bug.
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Title:
openvswitch: kernel oop
There is an openvswitch related issue, bug 1813244. Perhaps these two
are identical?
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Title:
openvswitch: kernel oops destroying interfaces on i3
** Description changed:
+ == SRU Justification ==
+
+ Commit 120645513f55 ("openvswitch: Add eventmask support to CT action.")
+ introduced a regression on i386. Simply running the following commands
+ in a loop will trigger a crash rather quickly:
+
+ ovs-vsctl add-br test
+ ovs-vsctl del-br te
https://lore.kernel.org/lkml/20190305104010.6342e9b9@gollum/
** Also affects: linux (Ubuntu Disco)
Importance: High
Status: In Progress
** Also affects: openvswitch (Ubuntu Disco)
Importance: Undecided
Status: Invalid
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Hmm, so are we giving up on this?
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Title:
openvswitch: kernel oops destroying interfaces on i386
To manage notifications about this bug go to:
h
** Changed in: linux (Ubuntu Bionic)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Cosmic)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Artful)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
**
Repro crash with the case - still triggering
Installed 32bit Test kernel
It boots this one:
Linux 4.15.0-36-generic #40 SMP Fri Oct 12 00:17:54 UTC 2018
Seems to have no "special" version suffix to identify it other than #40 and
build time.
But #40 and the build time indicate this is the provid
I built a i386 version of the Bionic test kernel with a patch from upstream.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1736390
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Hi Joseph, I'm back from my PTO, but have to ask you again for an update
- as in the past I'll need 32bit kernels for this test
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Title:
openvswit
Note to myself test instructions carried from my original bug
Update Kernel:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712831/comments/12
and
sudo qemu-system-i386 -hda autopkgtest-bionic-i386.img -enable-kvm -nographic
-curses -m 4096
Test:
sudo autopkgtest --shell-fail --apt-upgrad
I built a Bionic test kernel with a patch from upstream. The test kernel can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1736390
Can you test this kernel and see if it resolves this bug?
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That should be good. I just like to have the latest mainline already
tested in case upstream asks for it. I'll ping upstream and see what
the next steps should be.
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Hi Joseph, due to some maas accident I got my test system destroyed by a
coworker.
I tested v4.19-rc3 as I wrote in comment #51 - do you mind accepting that as a
valid "test latest mainline" even thou it was not -rc4 as it would be now?
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Could you give the latest mainline kernel a test before I ping upstream? It is
available from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc4
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Thanks,
installed that in the test env, after a manual reboot I got:
$ uname -a
Linux autopkgtest 4.15.0-34-generic #38~lp1736390Commit12064551Reverted SMP Thu
Sep 13 13:28:33 UTC i686 i686 i686 GNU/Linux
The change is persistent into the autopkgtest:
autopkgtest [05:11:17]: testbed running ker
There is a 32bit kernel now posted to:
http://kernel.ubuntu.com/~jsalisbury/lp1736390
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Title:
openvswitch: kernel oops destroying interfaces on i
While the tests that run on autopkgtest infra suggest it still is an
issue, I first I tried to reproduce as-is to be sure the trigger is good
(new release, new kernel, new OVS):
$ autopkgtest --apt-upgrade --shell --no-built-binaries
openvswitch_2.9.0-0ubuntu1.dsc -- qemu --qemu-command=qemu-syst
I built a Bionic test kernel with a revert of commit 120645513f55. The test
kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1736390
Can you test this kernel and see if it resolves this bug?
Note about installing test kernels:
• If the test kernel is prior to 4.15(Bionic) y
** Also affects: linux (Ubuntu Cosmic)
Importance: High
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
** Also affects: openvswitch (Ubuntu Cosmic)
Importance: Undecided
Status: Invalid
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Hi Joseph,
neither me nor James have realized that this waited for a retest on our side.
The old kernel that you had linked is gone by now (together with Artful I
assume) :-/
Would you mind prepping a new test kernel of your choice (This still is
an issue in cosmic, so whatever works best for you
It looks like only commit 120645513f55 would need to be reverted in
v4.13.0-38. Can you test the following test kernel:
http://kernel.ubuntu.com/~jsalisbury/lp1736390/
Be sure to install both the linux-image and linux-image-extra .deb
packages.
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I'm still working on the bisect. It looks like two commits may have
introduced the bug, which is slowing the bisect process.
I found that the following commit causes a kernel trace with rtmsg_ifa
as the EIP:
120645513f55 ("openvswitch: Add eventmask support to CT action.")
Reverting this commit
I'm still in the process of bisecting this. Some of the testing that
did not exhibit the bug, does sometimes. I need to run through the
prior testing I did to confirm whether the kernels were really good or
bad.
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Bugs, whic
The first bisect report the following commit as the first bad commit:
2f34c1231bfc ("Merge tag 'drm-for-v4.12' of
git://people.freedesktop.org/~airlied/linux")
However, because this commit is a merge, I have to perform another round
of bisecting between this commits parents. I'll have another up
Marking OVS tasks as invalid as we think this issue is in the kernel.
** Changed in: openvswitch (Ubuntu Artful)
Status: Confirmed => Invalid
** Changed in: openvswitch (Ubuntu Bionic)
Status: Confirmed => Invalid
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I'm still working on bisecting the issue down. I should have another
update in a day or two.
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Title:
openvswitch: kernel oops destroying interfa
@Joseph
Any update on your bisecting?
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Title:
openvswitch: kernel oops destroying interfaces on i386
To manage notifications about this bug go
After some more testing, it appears v4.11 final does not have the bug.
Version 4.12-rc1 appears to be the first kernel version to hit the bug.
I'll run a few more tests to confirm this. Once confirmed, I'll start a
bisect between v4.11 and v4.12-rc1.
If others want to try these two versions, they
The 4.10 based kernel does not experience this hang, but I am seeing it
with 4.12. Maybe the 4.12 based kernels does in fact have the bug.
I'll test further to find out.
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I'm swapping the bug back in and working on the bisect again. For some
reason, all of the prior kernels that worked, are now freezing on the
test while "Stopping Links":
*** Configuring hosts
h1 h2 h3 h4 h5 h6 h7 h8 h9 h10 h11 h12 h13 h14
*** Starting controller
c1
*** Starting 2 switches
s1 s2
Thanks for the feedback, Christian! This gives me enough to be able to
try and bisect this issue down now. I'll post an update shortly.
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Title:
On Wed, Jan 10, 2018 at 5:45 PM, Joseph Salisbury
wrote:
> Thanks for the feedback, Christian. I would much rather install them
> manually. I am able to do that without a problem. However, I am unable
> to access the GRUB menu in the usual way to select a specific kernel.
If you test through a
Thanks for the feedback, Christian. I would much rather install them
manually. I am able to do that without a problem. However, I am unable
to access the GRUB menu in the usual way to select a specific kernel.
I tried all the usual way, holding shift, modifying /etc/default/grub
setting, but no
On Fri, Jan 5, 2018 at 9:27 PM, Joseph Salisbury
wrote:
> I'm able to install a kernel using kvm:
> kvm -m 512 -hda ./autopkgtest-artful-i386.img
If that works for you fine.
> Is there a way to modify the autopkgtest command line to tell it which
> kernel to boot? When I have multiple test kern
I'm able to install a kernel using kvm:
kvm -m 512 -hda ./autopkgtest-artful-i386.img
Is there a way to modify the autopkgtest command line to tell it which
kernel to boot? When I have multiple test kernels installed, I usually
just select them from the GRUB menu. What would be the equivalent he
After running qemu-nbd:
ls /dev/nbd*
nbd0 nbd1 nbd10 nbd11 nbd12 nbd13 nbd14 nbd15 nbd2 nbd3 nbd4 nbd5
nbd6 nbd7 nbd8 nbd9
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Title:
I'm running into an issue mounting the image to get a kernel onto it.
For some reason, I cannot mount /dev/nbd0p1:
sudo modprobe nbd
sudo qemu-nbd --connect=/dev/nbd0 ./autopkgtest-artful-i386.img
sudo mount /dev/nbd0p1 /mnt/test/
mount: /mnt/test: special device /dev/nbd0p1 does not exist.
su
@Christina, Thanks for the info. I am now able to reproduce the bug
using your steps. Thanks again for that!
I'm going to dig deeper into this and see if I can bisect down to the
commit that caused this. I next need to figure out how to swap in
different test kernels. I think you explained ho
@Joseph - if you mean 2nd level so:
Machine
->KVM
-> $ autopkgtest-buildvm-ubuntu-cloud -a i386 -r artful -s 10G
That could be an issue - for 2nd level being famous for only working mostly.
But why would you do so - since the tests are in VMs they are already
more or less host release agnostic.
I'm attempting to reproduce the bug. However, I get a hang when I run the
following:
$ autopkgtest-buildvm-ubuntu-cloud -a i386 -r artful -s 10G
Attached is a screen shot of the hang. It seems to be trying to boot
the image.
** Attachment added: "hang.jpg"
https://bugs.launchpad.net/ubuntu
Also, I'm trying to run this on a VM instead of bare hardware. Could
that be an issue?
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Title:
openvswitch: kernel oops destroying interfaces on
I tried to build a test kernel with the patch set from Cong mentioned in
comment #18. However, there was a build failure due to some missing
prereq commits. I also had to backport many of the patches, since they
were not clean cherry picks.
Per comment 16, the bug did not start happening until t
** Summary changed:
- openvswitch: kernel opps destroying interfaces on i386
+ openvswitch: kernel oops destroying interfaces on i386
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Title:
op
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