[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Thanks Mike for the check.
Given the results even better that we decoupled this from last SRU.
The ppa you tested had all patches that were identified by IBM backported.

@lagarcia:
 - do you think there are more than the 5 you identified?
 - Given the report that the 2.6.1 from yakkety works there must be something 
between 2.5 to 2.6.1 that we miss not from 2.7 as the identified patches so far 
were.

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

Just to be sure I installed qemu-system-ppc version 1:2.6.1+dfsg-
0ubuntu5.3 from yakkety-updates and the tests pass.

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

We received the hardware back and have started testing all blockers
again. The latest test of the above mentioned PPA did not yield positive
results:

"Unable to find PowerPC CPU definition"

$ apt-cache policy qemu-system-ppc
qemu-system-ppc:
  Installed: 1:2.5+dfsg-5ubuntu10.10
  Candidate: 1:2.5+dfsg-5ubuntu10.10
  Version table:
 *** 1:2.5+dfsg-5ubuntu10.10 500
500 http://ppa.launchpad.net/ci-train-ppa-service/2502/ubuntu 
xenial/main ppc64el Packages
100 /var/lib/dpkg/status
 1:2.5+dfsg-5ubuntu10.9 500
500 http://ports.ubuntu.com/ubuntu-ports xenial-updates/main ppc64el 
Packages
 1:2.5+dfsg-5ubuntu10.6 500
500 http://ports.ubuntu.com/ubuntu-ports xenial-security/main ppc64el 
Packages
 1:2.5+dfsg-5ubuntu10 500
500 http://ports.ubuntu.com/ubuntu-ports xenial/main ppc64el Packages
$ uname -a
Linux fesenkov 4.4.0-66-generic #87-Ubuntu SMP Fri Mar 3 15:30:20 UTC 2017 
ppc64le ppc64le ppc64le GNU/Linux

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Descheduled from next SRU to unblock other fixes to be able to move into the 
release.
Setting to incomplete until test results provided.

** Changed in: qemu (Ubuntu Xenial)
   Status: Triaged => Incomplete

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

We still have not received the machine back from IBM.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

@Mike - is the machine back, any chance to test so far?

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

** Description changed:

- Upon running the virtualization test from the certification test suite,
- the kvm guest test fails with the following error:
+ [Impact]
+ 
+  * Some newer Power8 derivates fail to work correctly e.g. Power S822LC 
+   (8335-GTB) 
+ 
+  * This is a toleration change (no exploitation) for those HW releases 
+following the SRU policy of "For Long Term Support releases we 
+regularly want to enable new hardware. Such changes are appropriate 
+provided that we can ensure not to affect upgrades on existing 
+hardware."
+ 
+  * Without the Fix that hardware won't run Xenial guests under current 
+Xenials Qemu version
+ 
+  * The fix lets processors that support it run in PowerISA 2.07 
+compatibility mode (plus a few no-op changes as backport 
+dependencies)
+ 
+ 
+ [Test Case]
+ 
+  * Run a Xenial Guest in KVM on one of the specific HW revisions being 
+affected.
+ 
+ [Regression Potential]
+ 
+  * Changes are PPC only, so fallout should be contained to that
+  * Patches were created by IBM and in Upstream qemu since 2.7
+  * The effective change is rather small, only allow different compat 
+level on this other cpu class
+  * There are a few refactoring changes needed to get the backport done, 
+while they should be a no-op that is a regression potential (still 
+limited to ppc64el)
+ 
+ [Other Info]
+  
+  * Needed for certifying this Hardware for Ubuntu
+ 
+ 
+ 
+ Upon running the virtualization test from the certification test suite, the 
kvm guest test fails with the following error:
  
  kvm_init_vcpu failed: Invalid argument
  
  This same test works on multiple other IBM Power 8 and Openpower
  servers. kvm-ok tells us that kvm virtualization is supported. I have
  tried with SMT enabled and disabled. I have tried the latest cloud image
  as well as previous onces we had saved. I have tried running the qemu-
  system-ppc64 command found below manually with the same error.
- 
  
  The full output from the test is as follows:
  
  Executing KVM Test
  DEBUG:root:Starting KVM Test
  DEBUG:root:Cloud image location specified: 
http://10.1.10.2/cloud/xenial-server-cloudimg-ppc64el-disk1.img.
  DEBUG:root:Downloading xenial-server-cloudimg-ppc64el-disk1.img, from 
http://10.1.10.2
  DEBUG:root:Creating cloud user-data
  DEBUG:root:Creating cloud meta-data
  I: -input-charset not specified, using utf-8 (detected in locale settings)
  Total translation table size: 0
  Total rockridge attributes bytes: 331
  Total directory bytes: 0
  Path table size(bytes): 10
  Max brk space used 0
  183 extents written (0 MB)
  DEBUG:root:Attempting boot for:xenial-server-cloudimg-ppc64el-disk1.img
  DEBUG:root:Attaching Cloud config disk
  DEBUG:root:Using params:qemu-system-ppc64 -m 1024 -display none -nographic 
-net nic -net user,net=10.0.0.0/8,host=10.0.0.1,hostfwd=tcp::-:22 
-enable-kvm -machine pseries,usb=off -cpu POWER8 -drive 
file=xenial-server-cloudimg-ppc64el-disk1.img,if=virtio -drive 
file=seed.iso,if=virtio
  INFO:root:Storing VM console output in 
/home/ubuntu/.cache/plainbox/sessions/canonical-certification-server-2017-01-12T22.19.34.session/CHECKBOX_DATA/virt_debug
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-59-generic 4.4.0-59.80
  ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
  Uname: Linux 4.4.0-59-generic ppc64le
  AlsaDevices:
-  total 0
-  crw-rw 1 root audio 116,  1 Jan 12 22:18 seq
-  crw-rw 1 root audio 116, 33 Jan 12 22:18 timer
+  total 0
+  crw-rw 1 root audio 116,  1 Jan 12 22:18 seq
+  crw-rw 1 root audio 116, 33 Jan 12 22:18 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.1-0ubuntu2.4
  Architecture: ppc64el
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  Date: Thu Jan 12 22:45:34 2017
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb:
-  Bus 002 Device 002: ID 125f:312b A-DATA Technology Co., Ltd. Superior S102 
Pro
-  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
-  Bus 001 Device 003: ID 046b:ff10 American Megatrends, Inc. Virtual Keyboard 
and Mouse
-  Bus 001 Device 002: ID 046b:ff01 American Megatrends, Inc. 
-  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 002 Device 002: ID 125f:312b A-DATA Technology Co., Ltd. Superior S102 
Pro
+  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+  Bus 001 Device 003: ID 046b:ff10 American Megatrends, Inc. Virtual Keyboard 
and Mouse
+  Bus 001 Device 002: ID 046b:ff01 American Megatrends, Inc.
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  PciMultimedia:
-  
+ 
  ProcEnviron:
-  TERM=xterm
-  PATH=(custom, no user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm
+  PATH=(custom, no user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
 

[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Tests for any regressions on the ppa look good so far, going to try to
test the fixed case explicitly.

Since I don't have the HW that will be hard, but Mike already said he
will test as soon as the HW is back so that shall do it then.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

@paelzer the machine was sent out for repair/replacement. We expect it
to return later this week. I will test the package from the above PPA as
soon as it is back.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Preliminary builds as preparation for an SRU currently building at

Xenial https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/2502

My testing will start on those, but if you can please give it as much
testing as you can as well.

@leftyfb - how about your machine, is it running again to be able to
test that?

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

** Changed in: qemu (Ubuntu)
   Status: Triaged => Fix Released

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

@Christian

The qemu fix is still necessary in order to resolve the issue.

While I do have access to the hardware, it is currently having issues
booting. Once we resolve the issue with IBM, I plan on testing out the
qemu fix from the PPA.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

** Tags removed: kernel-key
** Tags added: kernel-da-key

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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Re: [Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

On Mon, Jan 30, 2017 at 3:38 PM, Mike Rushton 
wrote:

> @Christian The branch is for a fix in the plainbox-provider-checkbox
> package which is part of the certification suite
>

@Mike - sure I saw what it patche :-)
I wanted a clarification if this cancels the need of the qemu fixes or
if we will still need them?

@Mike - also I wanted to ask - since you have access to HW - if the you can
confirm the ppa fixing the issue.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

@Christian The branch is for a fix in the plainbox-provider-checkbox
package which is part of the certification suite. It is not for qemu-
system-ppc but is a necessary part of the overall fix since the script
was originally assuming POWER8.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

@Mike - is the branch you linked meant to augment or to replace the
suggested SRU (which should be tested from the ppa I linked)?

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

** Merge proposal linked:
   
https://code.launchpad.net/~leftyfb/plainbox-provider-checkbox/+git/plainbox-provider-checkbox/+merge/315823

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

** Changed in: qemu (Ubuntu)
   Status: New => Triaged

** Changed in: qemu (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: qemu (Ubuntu Xenial)
   Importance: Undecided => Medium

** Changed in: qemu (Ubuntu)
   Importance: Undecided => High

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Just learned that SRU for that would be more ok than I expected, quoting the 
SRU policy:
"For Long Term Support releases we regularly want to enable new hardware. Such 
changes are appropriate provided that we can ensure not to affect upgrades on 
existing hardware."

That said waiting for verification on the ppa before I continue (also
another SRU has to clear the queue first anyway).

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Leonardo Garcia]

Christian,

Your understanding in comment #31 is correct.

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

** Changed in: linux (Ubuntu Xenial)
   Status: Incomplete => Confirmed

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

OTOH the kernel patch is much much smaller:
$ git show 7cc851039d643a2ee7df4d18177150f2c3a484f5 | diffstat
 prom_init.c |1 +
 1 file changed, 1 insertion(+)
See 
https://github.com/torvalds/linux/commit/7cc851039d643a2ee7df4d18177150f2c3a484f5

IMHO I'd almost expect to only SRU the kernel change as it is more a "fix" in 
the SRU sense - and also that much smaller.
I'm clearly open for discussion, and the risk is almost ppc64 only so to some 
extend since it is IBMs call.
The ppa above shall help testing the qemu change for now.

Also we need to hear from the Kernel Team about potential side effects
after their review of the kernel change to see the full picture.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

For now I have prepared a qemu ppa to allow the reporter more testing.
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/2409/

That has the mentioned pactches on top of Xenial qemu and should allow
to test case #2 of my list above.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

The Qemu patches are only ppc, which leaves some hope that the potential
to affect other architectures should be minimal :-)

$ git show 7386ae6372cc07c77a39cb 8cd2ce7aaa3c3fadc561f4 52b2519c4ea9a6aa4df7ab 
eac4fba965136f61cc239a b30ff227c27c931155f768 | diffstat
 hw/ppc/spapr_hcall.c|   71 ++--
 target-ppc/cpu-qom.h|3 +
 target-ppc/cpu.h|3 +
 target-ppc/kvm.c|   19 ---
 target-ppc/kvm_ppc.h|7 
 target-ppc/translate_init.c |   24 +++---
 6 files changed, 86 insertions(+), 41 deletions(-)

The backport of the qemu fixes is not rocket-science, but also not applying 
as-is and at the moment I'd personally consider it more a feature than a fix. 
The series consists of 4 patches reworking code for the final one being "ppc: 
Add PowerISA 2.07 compatibility mode".
The question how much this is "fix or feature" might be important in the 
context of SRUing it eventually.

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[ChristianEhrhardt]

Hi,
thank you lagarcia for your expertise on this.

I try to summarize how I understand the last post - please correct me if
I'm wrong.

1. on POWER8NVL "Xenial qemu" in host and "Xenials kernel" in the guest
fail (that is the bug)

2. on POWER8NVL "Xenial qemu + the fixes" in host and "Xenial kernel" in
the guest would work

3. on POWER8NVL "Xenial qemu" in host and "Xenials kernel + fix" in the
guest would work

Is that correct?

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

** Changed in: linux (Ubuntu Xenial)
   Status: Confirmed => Incomplete

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Jon Grimm]

** Changed in: qemu (Ubuntu)
 Assignee: Jon Grimm (jgrimm) => (unassigned)

** Changed in: qemu (Ubuntu)
 Assignee: (unassigned) => Ubuntu Server Team (ubuntu-server)

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

In my testing, only qemu-system-ppc version 1:2.6.1+dfsg-0ubuntu5.2
available in yakkety and the template to set -cpu POWER8NVL was needed
to resolve the issue. No kernel patches were necessary.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Jon Grimm]

Added tracker for qemu package given speculation that may need updated
for POWER8NVL processor in comment #14.

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Manoj Iyer]

** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

** Changed in: qemu (Ubuntu)
 Assignee: (unassigned) => Jon Grimm (jgrimm)

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Jon Grimm]

** Also affects: qemu (Ubuntu)
   Importance: Undecided
   Status: New

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

** Tags removed: kernel-da-key
** Tags added: kernel-key

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[bugproxy]

** Tags added: architecture-ppc64le bugnameltc-150834 severity-medium
targetmilestone-inin16042

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Title:
  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
  failed: Invalid argument

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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Leonardo Garcia]

The issue being described here may be caused by the fact that older
kernel and QEMU cannot properly identify POWER8NVL processors being used
in the S822LC (8335-GTB) machines.

You might need 7cc851039d643a2ee7df4d18177150f2c3a484f5 kernel commit
(from kernel 4.7), and the following series of patches from QEMU, which
are available since QEMU 2.7:

http://git.qemu.org/?p=qemu.git;a=commitdiff;h=7386ae6372cc07c77a39cb
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=8cd2ce7aaa3c3fadc561f4
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=52b2519c4ea9a6aa4df7ab
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=eac4fba965136f61cc239a
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=b30ff227c27c931155f768

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Leonardo Garcia]

Hi Mike,

I could not understand your comment 4. Even though you said you see the
same error, you are showing only a warning message there. Also, the
description about KVM working with SMT on is really confusing. Could you
please detail what test steps you are taking? On a POWER8 machine it is
impossible to create guests if you have SMT enabled on the KMV host.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

KVM was never tested successfully on this particular model. The
virtualization test works fine on all other open power servers we have
in the labs.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

Thanks for testing, Mike.  Do you know if this is a regression?  Were
there prior kernel versions that did not exhibit this bug?

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

4.10 RC3 gives a kernel panic:

[3.863436] ahci 0009:04:00.0: AHCI 0001. 32 slots 4 ports 6 Gbps 0xf 
impl SATA mode
[3.863631] ahci 0009:04:00.0: flags: 64bit ncq sntf led only pmp fbs pio 
slum part sxs 
[3.864221] scsi host0: ahci
[3.864404] scsi host1: ahci
[3.864562] scsi host2: ahci
[3.864715] scsi host3: ahci
[3.864781] ata1: SATA max UDMA/133 abar m2048@0x3fe28081 port 
0x3fe280810100 irq 447
[3.864826] ata2: SATA max UDMA/133 abar m2048@0x3fe28081 port 
0x3fe280810180 irq 447
[3.864871] ata3: SATA max UDMA/133 abar m2048@0x3fe28081 port 
0x3fe280810200 irq 447
[3.864917] ata4: SATA max UDMA/133 abar m2048@0x3fe28081 port 
0x3fe280810280 irq 447
[3.869801] [drm] platform has no IO space, trying MMIO
[3.869832] [drm] AST 2400 detected
[3.869863] [drm] Analog VGA only
[3.869896] [drm] dram 163200 7 16 00c0
[3.869970] [TTM] Zone  kernel: Available graphics memory: 267838144 kiB
[3.870007] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[3.870044] [TTM] Initializing pool allocator
[3.870076] [TTM] Initializing DMA pool allocator
[3.874823] fb: switching to astdrmfb from OFfb vga
[3.874938] Console: switching to colour dummy device 80x25
[3.899718] nouveau 0002:01:00.0: enabling device (0140 -> 0142)
[3.928774] Kernel panic - not syncing: stack-protector: Kernel stack is 
corrupted in: c02ad0d4
[3.928774] 
[3.928776] CPU: 11 PID: 1118 Comm: systemd-udevd Not tainted 4.10.0-041000r

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Jeff Lane]

Abalan,  you have also subscribed to the package "Linux in Ubuntu" as
shown here:

https://bugs.launchpad.net/~fyma/+packagebugs

Because of this, you will receive bug notifications for EVERY bug filed
against "Linux".  YOu will need to unsubscribe from this package if you
do not wish to receive these updates.

OR, you will need to unsubscribe from each bug separately in the Bug
Mail settings box that is towards the top of the page on the right hand
side.

Good Luck

Jeff

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Rod Smith]

Abalan, you're subscribed to the "linux in Ubuntu" package, which is why
you're receiving bug reports:

https://bugs.launchpad.net/~fyma/+packagebugs

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Jeff Lane]

Abalan,  Please view the bug page and at the top on the Right Hand side,
you should see a box that says the following, or something similar:

You have subscriptions that may cause you to receive notifications, but you are 
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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Joseph Salisbury]

Are you able to test various kernels?  If so, it might be good to test
the mainline kernel to see if the bug is already fixed in mainline.  It
is available from:

 http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10-rc3

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Xenial)
   Status: New => Confirmed

** Tags added: kernel-da-key

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Mike Rushton]

As mentioned above, I have run the test multiple times with SMT both
enabled and disabled. I get the same error. This is from running the
test just now with SMT disabled:

WARNING: Image format was not specified for 'seed.iso' and probing guessed raw.
 Automatically detecting the format is dangerous for raw images, write 
operations on block 0 will be restricted.
 Specify the 'raw' format explicitly to remove the restrictions.
kvm_init_vcpu failed: Invalid argument


Also, KVM does in fact work with SMT enabled on ppc64el in PowerNV mode. KVM 
does not work with SMT enabled on a guest in PowerKVM mode. I have just run the 
test on the Power S822LC (8335-GTA Non-Virtualized) in PowerNV mode with SMT 
enabled and the guest booted fine.

That said, to limit variables, I will run the tests on the current
server with SMT disabled for the duration of the troubleshooting.

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  Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu
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[Bug 1656112] Re: Power S822LC (8335-GTB) failes KVM guest cert test with kvm_init_vcpu failed: Invalid argument

[Breno Leitão]

Hi Mike,

In the logs, it seems that you have SMT enabled. KVM does not work with
SMT enabled on ppc64el.

Would you mind running with SMT=off and rerun and posting the new logs,
please?

In order to disable SMT, please run:

# ppc64_cpu --smt=off

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