Pkg xen devel - Jul 2020 - Regression in Qemu 1:5.0-9 / 1:3.1+dfsg-8+deb10u6 for Xen/HVM

Hi all,

tl;dr: When using HVM, stay at, or downgrade qemu to:
- unstable: 1:5.0-8
- stable: 1:3.1+dfsg-8+deb10u5

In the previous week there has been debugging going on around a report
of failing to start HVM guests with the qemu update in Debian unstable.

Today it was discovered that the same issue had leaked to Debian stable
in the last security update.

The cause has been found now, and a regression update is in the works.

Hans

Actually,

On 7/20/20 5:35 PM, Hans van Kranenburg wrote:
> Hi all,
> 
> tl;dr: When using HVM, stay at, or downgrade qemu to:
> - unstable: 1:5.0-8
Sorry, I messed up the numbers. It was introduced in -6, which is in
testing now. So, downgrade to 1:5.0-5 when using HVM in Debian testing
and experiencing problems.

https://snapshot.debian.org/package/qemu/
> - stable: 1:3.1+dfsg-8+deb10u5
> 
> In the previous week there has been debugging going on around a report
> of failing to start HVM guests with the qemu update in Debian unstable.
Relevant debian bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964793
> Today it was discovered that the same issue had leaked to Debian stable
> in the last security update.
> 
> The cause has been found now, and a regression update is in the works.
Package for unstable has been uploaded:
https://tracker.debian.org/news/1161486/accepted-qemu-150-11-source-into-unstable/

https://salsa.debian.org/qemu-team/qemu/-/commit/ed2513350be80b068e37c2e03b6261ad77439ea0

Proposed fix for upstream:
https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05886.html

Stable security regression update will follow.

Hans