** Changed in: linux-2.6 (Debian)
Status: Confirmed = Fix Released
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
Server Team, which is
Any updates on this? I am testing it with the lucid release candidate,
the oops still remains.
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
I cannot see this happen here. I just tested with 2.6.32-21.32 as host
kernel for i386 and amd64. What host/guest kernel combination are you
using and what type of CPU do you have?
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
I am using Debian Lenny as host (linux 2.6.32-bpo.3-amd64, qemu
0.12.3+dfsg-4~bpo50+2), but I was thinking that the bug was related to
Ubuntu guest, isn't it? should I file a bug on Debian side?
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
Sorry, I didn't mention that I have AMD cpu (AMD Athlon(tm) 64 X2 Dual
Core Processor 4600+).
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
It is a bug related to the host side. There are patches in the upstream stable
tree that will fix it. But that is just in review. Depending on how Debian picks
up stable it would get fixed then 2.6.32.12 is pulled in. So it is not related
to your Ubuntu guest.
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[lucid] All linux guests oops in
Stefan; Giovanni: We will include the fix in Debian kernel version
2.6.32-12. The Debian bug report now includes a reference to the fix.
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug
** Changed in: linux-2.6 (Debian)
Status: Unknown = Confirmed
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
Server Team, which is
lavinog wrote:
I am experiencing some poor performance with beta-1 in qemu-kvm (didn't have
this issue last month.)
Would the removal of the patches (mentioned in comment #14) be the cause of
this?
I am using an AMD host, and just moving the mouse will cause the host cpu to
spike. I
I am experiencing some poor performance with beta-1 in qemu-kvm (didn't have
this issue last month.)
Would the removal of the patches (mentioned in comment #14) be the cause of
this?
I am using an AMD host, and just moving the mouse will cause the host cpu to
spike. I tested an image of
The patches which triggered this issue have been backed out for beta-1.
The additional patch to fix the issue is now known. The combination
will be applied and tested together to avoid a recurrence. This will
happen after bete-1.
** Changed in: linux (Ubuntu Lucid)
Status: In Progress =
** Changed in: linux (Ubuntu)
Milestone: None = ubuntu-10.04-beta-1
** Also affects: linux (Ubuntu Lucid)
Importance: High
Assignee: Stefan Bader (stefan-bader-canonical)
Status: In Progress
** Also affects: qemu-kvm (Ubuntu Lucid)
Importance: High
Status: Invalid
While I want to wait for this to further go through the process upstream, there
is a fix for this issue now. And some explanation why this was observed only by
some people. It seems the bug was only observable on AMD based systems which
seem to need certain hypercall instructions patched where
** Tags added: patch
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to qemu-kvm in ubuntu.
--
** Bug watch added: Debian Bug tracker #573071
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=573071
** Also affects: linux-2.6 (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=573071
Importance: Unknown
Status: Unknown
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[lucid] All linux guests oops in
I am adding another dmesg dump plus a matching kvm_leave_lazy_mmu
disassembly.
** Attachment added: kvm_leave_lazy_mmu.txt
http://launchpadlibrarian.net/40627894/kvm_leave_lazy_mmu.txt
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
Marking invalid against the qemu-kvm userspace, and in-progress against
the kernel. Looks like Stefan has this in hand.
Stefan, can we get this into the next kernel build (if it's not
already?)?
** Changed in: linux (Ubuntu)
Status: Confirmed = In Progress
** Changed in: qemu-kvm
Dustin Kirkland wrote:
Stefan, can we get this into the next kernel build (if it's not
already?)?
The next Lucid kernel has reverted all the KVM patches until we find out a
patchset that works. I am currently trying to get upstream involved as it looks
to me the same thing would happen on
** Summary changed:
- [lucid] All linux guests oops during boot (9.04, 9.10, 10.04)
+ [lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
Which version of kvm are you using?
Regards
chuck
** Changed in: qemu-kvm (Ubuntu)
Importance: Undecided = Medium
** Changed in: qemu-kvm (Ubuntu)
Status: New = Incomplete
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
Hello,
I am experiencing this issue with:
qemu-kvm 0.12.3-0ubuntu4
Linux buzz 2.6.32-15-generic #22-Ubuntu SMP Tue Mar 2 02:24:17 UTC 2010 i686
GNU/Linux
I was able to start the vms by rebooting into
Linux buzz 2.6.32-14-generic #20-Ubuntu SMP Sat Feb 20 05:38:50 UTC 2010 i686
GNU/Linux
So
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New = Confirmed
** Changed in: linux (Ubuntu)
Importance: Undecided = High
** Changed in: qemu-kvm (Ubuntu)
Status: New = Confirmed
** Changed in: qemu-kvm
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Stefan Bader (stefan-bader-canonical)
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
Roman, out of curiosity, do you still see the oops if you boot without
virtio disks (and use scsi or ide instead)?
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a
Dustin,
That happens even when I'm just trying to start ubuntu cd off an ide
emulation. The guest kernel finds out that it runs in kvm and commits
suicide.
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[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received
Okay thanks. We're working on getting that host kernel some therapy ;-)
--
[lucid] All linux guests oops in kvm_leave_lazy_mmu during boot (9.04, 9.10,
10.04)
https://bugs.launchpad.net/bugs/531823
You received this bug notification because you are a member of Ubuntu
Server Team, which is
Ok, so it seems that there is one change which seems responsible for
this:
KVM: fix memory access during x86 emulation.
Though I cannot be completely sure this is the only thing causing
problems (my system here is too erratic with gfx) I have placed some
kernels without this at
@Stefan,
I can confirm that guests no longer die with the host kernel version you placed.
Linux buzz 2.6.32-15-generic #22+kvmfix1 SMP Thu Mar 4 22:13:32 UTC 2010 i686
GNU/Linux
P.S. The correct link is http://people.canonical.com/~smb/bug531823.
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[lucid] All linux guests oops in
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