Call for testing: kernel 4.14.13-200.fc26 / 4.14.13-300.fc27 - initial Spectre mitigations

Hi folks!

Kernel updates for Fedora 26 and Fedora 27 are now available with
initial mitigations for both Spectre variants. As the update
description states:

"This is also the first update to contain some spectre mitigations.
Some patches for variant 1 as well as the initial retpoline build for
variant 2. These variant 2 mitigations will improve with further
patches, and once compiler support is improved."

As for the Meltdown fix, the testing we're primarily interested here is
just to boot the kernel and verify that it doesn't break anything
unexpected. If the new kernel boots and works OK for you, please leave
positive feedback.

Thanks very much!

For extra credit, the kernel maintainers are also interested in seeing
some data from AMD users. They're interested in at least this output:

# dmesg | grep Spectre
# grep spectre /proc/cpuinfo

if you have an AMD CPU, it'd be great if you can post the output of
those commands on your system as a Bodhi comment.

F26: <a href="" title=""></a>
F27: <a href="" title=""></a>

Both updates are currently 'pending' and have not yet reached updates-
testing; keen testers can get the package from Koji and update as I
suggested before: download the new versions of the important packages
(at least kernel, kernel-core, and kernel-modules) and run 'dnf update
kernel*.rpm'. Otherwise, the packages should reach the mirrors in a few


Re: Call for testing: kernel 4.14.13-200.fc26 /

By Adam Williamson at 01/12/2018 - 13:14

On Thu, 2018-01-11 at 13:55 -0800, Adam Williamson wrote:
Update: the F27 update is now stable; not sure if the kernel team wants
more debug output from AMD users, but it can't hurt, so do feel free to
go ahead if you have an AMD CPU and haven't yet.

The F26 update still needs more karma, and should now be in updates-
testing. Can folks on F26 please install the update and provide
positive feedback if it works? Thanks!

Re: Call for testing: kernel 4.14.13-200.fc26 /

By Adam Williamson at 01/11/2018 - 18:09

On Thu, 2018-01-11 at 13:55 -0800, Adam Williamson wrote:
...sigh, and *once again*, just as I sent out the call for testing, the
updates went into 'locked' state, which due to a bug in Bodhi at
present means you can't comment on them until they're unlocked again.

Sorry about that! Once the updates complete push to testing, you'll be
able to comment on them again. And Randy promises me this will be fixed
in Bodhi soon.

Re: Re: Call for testing: kernel 4.14.13-200.fc2

By Randy Barlow at 01/12/2018 - 14:41

On 01/11/2018 05:09 PM, Adam Williamson wrote:
Yeah I think this will be fixed in Bodhi 3.2.0, which has a significant
refactor on the composition code, specifically around how it does
database transactions.