This bug was fixed in the package linux - 4.4.0-63.84
---
linux (4.4.0-63.84) xenial; urgency=low
[ Thadeu Lima de Souza Cascardo ]
* Release Tracking Bug
- LP: #1660704
* Backport Dirty COW patch to prevent wineserver freeze (LP: #1658270)
- SAUCE: mm: Respect FOLL_FO
Verified fix in 4.4.0-63.84.
** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial
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https://bugs.launchpad.net/bugs/1649718
Title:
Linux rtc self test fai
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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Title:
Linux rtc self test fails in a VM under xenial
To manag
** Description changed:
+ == SRU Justification ==
+
+ Impact: A race in kvm can result in the EOI signal for the rtc irq to be
+ lost. After this happens no more rtc interrupts will be delivered to the
+ guest.
+
+ Fix: Three upstream cherry picks which fix the problem.
+
+ Regression Potential
Those kernel patches fix the problem. Changing the package to linux,
I'll get those patches into xenial's kernel.
Ryan, thanks for the help.
** Package changed: qemu (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
St
On Wed, Dec 14, 2016 at 08:17:53PM -, Ryan Harper wrote:
> I think this is related to kvm module in 4.4's in-kernel irq chip.
>
> If one runs with kernel_irqchip=off property set on the qemu command, then
> even Xenial on Xenial SMP
> never fails.
>
> Installing the 16.04 HWE Edge kernel (4.
I think this is related to kvm module in 4.4's in-kernel irq chip.
If one runs with kernel_irqchip=off property set on the qemu command, then
even Xenial on Xenial SMP
never fails.
Installing the 16.04 HWE Edge kernel (4.8.0-30) on my Xenial host resolves
this as well.
On Wed, Dec 14, 2016 at 8
The other oddity, running the guest with 1 cpu always works for me in the
cases where it failed before.
On Wed, Dec 14, 2016 at 5:37 PM, Ryan Harper
wrote:
>
>
> On Wed, Dec 14, 2016 at 4:31 PM, Seth Forshee <
> seth.forshee...@canonical.com> wrote:
>
>> Looking at kernel 4.9, the RTC_UIE_ON io
On Wed, Dec 14, 2016 at 4:31 PM, Seth Forshee wrote:
> Looking at kernel 4.9, the RTC_UIE_ON ioctl sets an alarm via the
> cmos_rtc driver. This does a couple of things.
>
> 1. Disables the CMOS RTC alarm interrupt, writes an alarm time to the
> CMOS RTC, then enables the alarm interrupt.
>
> 2.
Looking at kernel 4.9, the RTC_UIE_ON ioctl sets an alarm via the
cmos_rtc driver. This does a couple of things.
1. Disables the CMOS RTC alarm interrupt, writes an alarm time to the
CMOS RTC, then enables the alarm interrupt.
2. When configured to emulate an RTC using the HPET (which our kernel
Trusty on Xenial does not
Xenial on Xenial hangs
Xenial on Zesty does not.
Kernel hoping continues.
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Title:
Linux rtc self test fails in a VM un
In xenial I have 1:2.5+dfsg-5ubuntu10.7, I also saw the problem with
1:2.5+dfsg-5ubuntu10.6. In zesty I have 1:2.6.1+dfsg-0ubuntu8.
I'm launching the VMs using virsh, the log shows this (for xenial):
LC_ALL=C
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
QEMU_AUDIO_DRV=spice /
** Bug watch added: Red Hat Bugzilla #1184691
https://bugzilla.redhat.com/show_bug.cgi?id=1184691
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Title:
Linux rtc self test fails in a VM un
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