[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2014-12-04 Thread Rolf Leggewie
saucy has seen the end of its life and is no longer receiving any
updates. Marking the saucy task for this ticket as Won't Fix.

** Changed in: qemu-kvm (Ubuntu Saucy)
   Status: Confirmed = Won't Fix

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in linux package in Ubuntu:
  Fix Released
Status in qemu-kvm package in Ubuntu:
  Confirmed
Status in linux source package in Saucy:
  Won't Fix
Status in qemu-kvm source package in Saucy:
  Won't Fix

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2014-08-06 Thread Chris J Arges
** Changed in: linux (Ubuntu Saucy)
   Status: In Progress = Won't Fix

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Fix Released
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  Won't Fix
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2014-08-04 Thread Chris J Arges
** Changed in: linux (Ubuntu)
   Status: In Progress = Fix Released

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Fix Released
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-12-19 Thread Stefan Bader
** Changed in: linux (Ubuntu)
 Assignee: Stefan Bader (smb) = (unassigned)

** Changed in: linux (Ubuntu Saucy)
 Assignee: Stefan Bader (smb) = (unassigned)

** Changed in: qemu-kvm (Ubuntu)
 Assignee: Stefan Bader (smb) = (unassigned)

** Changed in: qemu-kvm (Ubuntu Saucy)
 Assignee: Stefan Bader (smb) = (unassigned)

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-12-13 Thread Seth Forshee
I tried reproducing this while using trusty on the host and was unable
to do so. I also could not reproduce with the trusty kernel (currently
3.12) running with saucy userspace on the host. So as far as I can tell
the issue is fixed in 3.12.

I took a stab at trying to bisect, but something between 3.11 and
3.12-rc1 is causing the machine to not boot. With 3.12-rc1 my VMs failed
to boot, and with 3.12-rc2 I couldn't reproduce the issue at all. So it
looks like bisecting to find the fix will be nearly impossible. Going
through the kvm commits in 3.12 revealed a lot of changes related to
running nested VMs but nothing that stood out from the pack.

So if anyone _really_ needs this fixed in saucy, let me know, otherwise
I'm going to assume that having it fixed in trusty is good enough.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-10-02 Thread Launchpad Bug Tracker
Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: qemu-kvm (Ubuntu)
   Status: New = Confirmed

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-09-17 Thread Robie Basak
Stefan: I assigned you in the server team meeting. Please unassign if
you object. Thanks!

** Changed in: linux (Ubuntu Saucy)
 Assignee: (unassigned) = Stefan Bader (smb)

** Changed in: qemu-kvm (Ubuntu Saucy)
 Assignee: (unassigned) = Stefan Bader (smb)

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-09-10 Thread Stefan Bader
As it seemed that starting a 64bit hypervisor (qemu-system-x86_64) from
a 32bit user-space running on another 64bit hypervisor has different
issues which seem to go back even further, I concentrated on bisecting
the case of host running 64bit user-space on a 64bit CPU and the first
level guest running 64bit user-space under a 64bit hypervisor. The
second level guest is started with a 64bit hypervisor but a 32bit
userspace. All host and guests are Saucy and started with the same
kernel.

Then for bisecting I only replaced the host kernel with kernels between
v3.9 and v3.10. Then started a guest and ran the prepare-testbed
repeatedly. The first change that broke things was:

commit 5f3d5799974b89100268ba813cec8db7bd0693fb
KVM: nVMX: Rework event injection and recovery

However at that point starting a 2nd level guest is completely broken
until:

commit 5a2892ce72e010e3cb96b438d7cdddce0c88e0e6
KVM: nVMX: Skip PF interception check when queuing during nested run

So potentially the rework patch broke things and the current issue is
remaining after fixing the major issues. Though it could be introduced
by one of the patches in between but it  cannot be bisected.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-09-10 Thread Stefan Bader
Btw, James, this means there is a simple but not very helpful work-
around for Saucy: use AMD CPU based hosts. Did not check for 32bit user-
space on 1rst level but with 64bit and had no issues. Not very
surprising as the regression seems to be in the nested VMX code. But
also not very useful when working in the cloud...

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-22 Thread James Hunt
The latest advice for running on Canonistack (kvm guest instance where
nested=Y is to):

- Only run on a 64-bit Canonistack guest instance.
- Modify bin/prepare-testbed and bin/run-adt-test to start the autopkgtest VM 
using 'qemu-system-x86_64 -enable-kvm'.
- Have the DEP8 test running inside the autopkgtest VM start its VM using 'qemu 
-enable-kvm'.

Using the above but appending '-nographic /tmp/kvm.log 21' to each
kvm command-line to allow console log capture results in the first
created VM (the one created by prepare-testbed/bin/run-adt-test) locking
up. Unfortunately, there is no output in kvm.log.

I'll retry without '-nographic' as smb has noticed this seems to affect
the stability of the overall kvm stack. Even if this does work, it is
clearly not ideal to discard console output (unless there is another
magic qemu option we can try?)

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-22 Thread Stefan Bader
They can be even together. The -nographic removes any emulated graphics
card. I am not sure in detail how the cloud images work, but I believe
serial line as a console is always on. Depending on which release (in
that case I think it is the qemu user-space) the used setup would not
work even. Because -monitor stdio redicrects the monitor to stdio and
the default of serial was stdio, too. So they did clash (might depend on
-nographic as well).

So when playing without -nogrphics, and crashes persist, you might play
with -vga std which would give a std vga card instead of cirrus.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-22 Thread James Hunt
'qemu -serial file:/tmp/kvm.log' Looks like an alternative to 'qemu
-nographic /tmp/kvm.log 21'.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-22 Thread James Hunt
Re #27, removing -nographic still causes the same lockup for me.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-19 Thread Stefan Bader
So host Q and 1rst 32 completed 35 runs and 1rst 64 completed 40.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-16 Thread James Hunt
Latest kernel panic (from 2nd-level guest) using following kernel
versions:

host: 3.11.0-1-generic (-2 causes problems for my graphics hardware atm)
1st-level guest: 3.11.0-2-generic
2nd-level guest: 3.11.0-2-generic


** Attachment added: kvm.log
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208455/+attachment/3775059/+files/kvm.log

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-16 Thread Stefan Bader
I saw a similar crash when running the prepare script with a Saucy64
host, a Saucy32 1rst and Saucy32 2nd level guest. The 1rst level guest
cpu set to core2duo and I also had to replace the qemu-system-x86_64 by
qemu (which maps to the same arch). Otherwise the 2nd level guest was
not started at all.

That would on one run give a double-fault as you had, but the second
attempt did succeed. Though both runs had a lot of NMI (reason 21 and
31) messages in them.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-16 Thread Stefan Bader
Using a 64bit 1rst level guest seemed better on manual runs but running
in loops seemed to have locked up on the third run. Though completely
without any messages. I have to look into that next week. I need to run
again with qmp enabled. At least this allows to check for the
instruction pointer of the cpus. But unfortunately I don't know yet how
to get any better data from the 2nd level guest.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-15 Thread James Hunt
Now that 3.11 is out of proposed, we're seeing a different kernel
failure, starting with

run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.11.0-2-generic 
/boot/vmlinuz-3.11.0-2-generic
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.11.0-2-generic
Found initrd image: /boot/initrd.img-3.11.0-2-generic
Found memtest86+ image: /boot/memtest86+.bin
[  776.392144] BUG: soft lockup - CPU#0 stuck for 23s! [modprobe:18758]
[  776.392144] CPU: 0 PID: 18758 Comm: modprobe Tainted: GF
3.11.0-2-generic #5-Ubuntu
[  776.432133] BUG: soft lockup - CPU#1 stuck for 23s! [systemd-udevd:333]
[  776.432133] CPU: 1 PID: 333 Comm: systemd-udevd Tainted: GF
3.11.0-2-generic #5-Ubuntu
[  776.432133] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  776.432133] task: f5f619c0 ti: f5f3c000 task.ti: f5f3c000
[  776.432133] Stack:
[  776.432133] Call Trace:
[  776.432133] Code: 08 89 0c 24 89 f1 e8 16 fc ff ff e9 36 ff ff ff 90 55 ba 
00 01 00 00 89 e5 f0 66 0f c1 10 0f b6 ce 38 d1 74 0d 8d 74 26 00 f3 90 0f b6 
10 38 ca 75 f7 5d c3 8d b6 00 00 00 00 8d bc 27 00 00 00
[  776.392144] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  776.392144] task: f56919c0 ti: f5746000 task.ti: f5746000


** Attachment added: kvm.log
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208455/+attachment/3773460/+files/kvm.log

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-15 Thread James Hunt
The kernel BUG: above happens when running bin/prepare-testbed -r saucy -d 
i386 from lp:auto-package-testing in canonistack:
the kvm instance spins at ~200% CPU again.

I modified bin/prepare-testbed slightly to log the output of the vm and
disable byoubu. See attached.


** Patch added: auto-package-testing.diff
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208455/+attachment/3773462/+files/auto-package-testing.diff

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-15 Thread James Hunt
To recreate:

1) Follow instructions on internal wiki (page
InformationInfrastructure/IS/CanonicalOpenstack) to create a keypair.

2) Create an guest instance:

$ keyname=${USER}_lcy01
$ image=$(euca-describe-images|grep saucy|head -1|awk '{print $2}')
$ euca-run-instances -k $keyname -t m1.medium $image

3) Identify IP address and instance name (i-):

$  euca-describe-instances

4) ssh into system

5) Install required packages:

$ sudo apt-get -y install genisoimage linux-image-extra-virtual bzr
qemu-kvm qemu-utils

6) Setup groups

$ usermod -G kvm -a ubuntu

7) Logout and back in again to pick up kvm group membership.

8) Checkout bzr branch:

$ bzr branch lp:auto-package-testing
$ cd auto-package-testing

9) Apply patch on this bug to disable byobu and enable kvm logging (to
/tmp/kvm.log)

10) Run the following:

bin/prepare-testbed -r saucy -d i386

11) tail -f /tmp/kvm.log and wait for massive cpu usage and kernel spew
in /tmp/kvm.log.

12) Cleanup:

$ euca-terminate-instances i-

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-15 Thread Ubuntu Foundations Team Bug Bot
** Tags added: patch

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-15 Thread Stefan Bader
Before running prepare-testbed:

- create a directory in /mnt that user ubuntu can write to (say /mnt/adt)
- echo BASEDIR=/mnt/adt  ~/.adtrc

autopkgtest should then use /mnt which has lots of space on medium
guests.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-13 Thread Joseph Salisbury
** Tags removed: kernel-key
** Tags added: kernel-da-key

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-09 Thread James Hunt
I got the panic again last night. This was running a 3.11 kernel for the
host, but of course the 1st and 2nd level guests were still running 3.10
as 3.11 is still in -proposed. So, although it's possible to get a test
run with (3.11, 3.10, 3.10) I really need to try running with (3.11,
3.11, 3.11) to see if this provides a reliable solution.


** Changed in: linux (Ubuntu Saucy)
   Status: Fix Committed = In Progress

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-08 Thread James Hunt
Testing with linux-image-3.11.0-0-generic from -proposed with nested=Y
in all 3 environments does appear to solve this issue.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-08 Thread Stefan Bader
Serge mentioned today on IRC that this may be also a glibc issue, but I
am not sure what exactly he was looking at and why he thinks so.
Apparently ftracing (I guess the qemu process) and some partially
inlining clone function (those with .isra extention) were involved.

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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Re: [Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-08 Thread Serge Hallyn
Quoting Stefan Bader (stefan.ba...@canonical.com):
 Serge mentioned today on IRC that this may be also a glibc issue, but I
 am not sure what exactly he was looking at and why he thinks so.
 Apparently ftracing (I guess the qemu process) and some partially
 inlining clone function (those with .isra extention) were involved.

Right, ftrace seems the most likely culprit.  In any case, since
a newer kernel is confirmed to fix it, disregard anything I said
about libc :)

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-08 Thread Joseph Salisbury
Per comment #13, it sounds like this issue is resolved in the 3.11
kernel, which is what Saucy will be rebased to.  Does this issue only
exist in Saucy, or should the bug be targeted to other releases as well?

** Also affects: linux (Ubuntu Saucy)
   Importance: High
   Status: Incomplete

** Also affects: qemu-kvm (Ubuntu Saucy)
   Importance: High
   Status: New

** Changed in: linux (Ubuntu Saucy)
   Status: Incomplete = Fix Committed

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Fix Committed
Status in “qemu-kvm” package in Ubuntu:
  New
Status in “linux” source package in Saucy:
  Fix Committed
Status in “qemu-kvm” source package in Saucy:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-07 Thread James Hunt
Fresh kernel panic from 2nd-level nested VM running with host, 1st level
and 2nd level all running with nested=1.

** Attachment added: kvm.log
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208455/+attachment/3763650/+files/kvm.log

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-07 Thread Serge Hallyn
** Changed in: qemu-kvm (Ubuntu)
   Importance: Undecided = High

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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[Kernel-packages] [Bug 1208455] Re: general protection fault running apt-get inside double nested kvm VM

2013-08-07 Thread Serge Hallyn
All the kernel logs Ive seen have shown oops at rtc_sysfs_del_device,
starting with something like

[  509.317630] general protection fault:  [#1] SMP 
[  509.320084] Modules linked in: dm_crypt(F) kvm_intel kvm ppdev(F) nls_utf8 
isofs(F) microcode(F) parport_pc(F) pvpanic parport(F) psmouse(F) serio_raw(F) 
i2c_piix4 mac_hid cirrus syscopyarea(F) sysfillrect(F) sysimgblt(F) ttm 
drm_kms_helper drm floppy(F) e1000(F)
[  509.320084] CPU: 0 PID: 1335 Comm: dpkg Tainted: GF
3.10.0-6-generic #17-Ubuntu
[  509.320084] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  509.320084] task: c6143380 ti: c1a42000 task.ti: c338a000
[  509.320084] EIP: 0060:[c12e46de] EFLAGS: 00014086 CPU: 0
[  509.320084] EIP is at number.isra.2+0xe/0x350
[  509.320084] EAX: c7eec000 EBX: c17e2633 ECX: 0021 EDX: c1a46380
[  509.320084] ESI: c17e2633 EDI: c1a45fbe EBP: c1a43618 ESP: c1a435ac
[  509.320084]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  509.320084] CR0: 8005003b CR2:  CR3: 01a36000 CR4: 06f0
[  509.320084] DR0:  DR1:  DR2:  DR3: 
[  509.320084] DR6: 0ff0 DR7: 0400
[  509.320084] Stack:
[  509.320084]         

[  509.320084]         

[  509.320084]   c17e262e c17e262f c1a43618 c12e40e3 c1a43648 c17e262e 
c17e2632
[  509.320084] Call Trace:
[  509.320084]  [c12e40e3] ? format_decode+0x323/0x390
[  509.320084]  [c12e5f8c] vsnprintf+0x2bc/0x390
[  509.320084]  [c12e6076] vscnprintf+0x16/0x30
[  509.320084]  [c104990b] vprintk_emit+0x12b/0x530
[  509.320084]  [c161a120] printk+0x50/0x52
[  509.320084]  [c10347c9] doublefault_fn+0x39/0x120
[  509.320084]  [c14b8c20] ? rtc_sysfs_del_device+0x30/0x30

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Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

To manage notifications about this bug go to:
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