[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

Paolo Bonzini  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 CC||bonz...@gnu.org
 Resolution|--- |CODE_FIX

--- Comment #6 from Paolo Bonzini  ---
The faulty patch, 1cde2930e15473cb4dd7e5a07d83e605a969bd6e, was never in a
stable release.

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[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

cebbert.l...@gmail.com changed:

   What|Removed |Added

 CC||cebbert.l...@gmail.com

--- Comment #5 from cebbert.l...@gmail.com ---
Fixed in 4.2-rc1 by:

commit 2ecd9d29abb171d6e97a4f3eb29d7456a11401b7
Author: Peter Zijlstra 
Date:   Fri Jul 3 18:53:58 2015 +0200

sched, preempt_notifier: separate notifier registration from static_key
inc/dec


But this patch was not submitted for -stable.

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[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

Andrey Smetanin asmeta...@virtuozzo.com changed:

   What|Removed |Added

 CC||asmeta...@virtuozzo.com

--- Comment #3 from Andrey Smetanin asmeta...@virtuozzo.com ---
Created attachment 181741
  -- https://bugzilla.kernel.org/attachment.cgi?id=181741action=edit
another one dmesg

I have the encountered the same bug, guest OS - Windows 2012R2, the guest just
after start goes into paused state. The attached dmesg dump contains guest/vms
state. The kernel is linux
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git) with top
commit 9bdc771f2c29a11920f477fba05a58e23ee42554
Merge: 7df9ab8 ea7d521
Author: Linus Torvalds torva...@linux-foundation.org
Date:   Thu Jul 2 17:11:28 2015 -0700

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[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

--- Comment #4 from Andrey Smetanin asmeta...@virtuozzo.com ---
Created attachment 181781
  -- https://bugzilla.kernel.org/attachment.cgi?id=181781action=edit
With this patch(commit revert) the bug disappears

Added patch - revert of commit 1cde2930e15473cb4dd7e5a07d83e605a969bd6e. I had
tested twice - with revert bug disappears.

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[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

--- Comment #2 from Lidong Chen jemmy858...@gmail.com ---
When does the write error happen and what guest/host are you running ?
this error happen when the guest os is booting.
the guest os kernel verison is also 4.1.0+.

If it's a regression, would it be possible for you to bisect it ?
yes,the old kernel version didn't have the bug. so i will try to find out which
patch cause this error.

Is bug 100661 related to the same hardware ?
yes.

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[Bug 100671] vmwrite error in vmx_vcpu_run

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=100671

Bandan Das b...@makefile.in changed:

   What|Removed |Added

 CC||b...@makefile.in

--- Comment #1 from Bandan Das b...@makefile.in ---
(Reposting this since Bugzilla refuses to post with an unregistered email id)

Can you please provide a little bit more information ?
When does the write error happen and what guest/host are you running ?
If it's a regression, would it be possible for you to bisect it ?
Is bug 100661 related to the same hardware ?

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