CentOS virt - Feb 2019 - CentOS virt-sig Linux kernel 4.9.155 build

Hi,

On Sun, Feb 10, 2019 at 10:35:56PM -0500, Karl Johnson
wrote:
>    Hello,
>    I built 4.9.155 for both el6 and el7, you can test them here:
>   
[1]https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el6.x86_64.rpm
>   
[2]https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el7.x86_64.rpm
>    It works fine for me so far on el6, I'll update my pull request
later on
>    GitHub with this version.
>    [root at node-tmp1 ~]# cat /proc/version
>    Linux version 4.9.155-34.el6.x86_64 ([3]mockbuild at
build.aerisnetwork.net)
>    (gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) ) #1 SMP Sun Feb 10
>    11:20:04 EST 2019
Great, thanks a lot! I'll give it a go.


-- Pasi
>    Karl
>
>    On Sat, Feb 9, 2019 at 10:32 AM Pasi K??rkk??inen <[4]pasik at
iki.fi> wrote:
> 
>      Hello everyone,
> 
>      Some of you might remember discussions earlier in 2017 (huh, long time
>      ago) on centos-virt list about Linux kernel tty/ldisc related bug,
which
>      caused Xen dom0 kernel crashes for some people (and also more easy to
>      trigger crashes on other arches, like on hp pa-risc), but the bug was
>      difficult to reproduce for others/most people.
> 
>      Fix for this issue was merged to centos virt-sig Linux 4.9.48-29
kernel
>      earlier in 2017, but reverted/deleted in 4.9.75-30 due to problems
with
>      the patch. The patch in question was also merged to upstream Linux
>      kernel, and later reverted there aswell.
> 
>      But now finally the issue has been resolved in upstream Linux, and the
>      patches have been already backported to Linux 4.9.152 longterm stable
>      kernel. Changelog:
>      [5]https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.152
>      You can find the tty/ldisc patches there.
> 
>      So I propose we build the latest 4.9.155 kernel for CentOS virt-sig
for
>      centos6 and centos7.
> 
>      Thanks,
> 
>      -- Pasi
> 
>      _______________________________________________
>      CentOS-virt mailing list
>      [6]CentOS-virt at centos.org
>      [7]https://lists.centos.org/mailman/listinfo/centos-virt
> 
> References
> 
>    Visible links
>    1.
https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el6.x86_64.rpm
>    2.
https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el7.x86_64.rpm
>    3. mailto:mockbuild at build.aerisnetwork.net
>    4. mailto:pasik at iki.fi
>    5. https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.152
>    6. mailto:CentOS-virt at centos.org
>    7. https://lists.centos.org/mailman/listinfo/centos-virt
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> https://lists.centos.org/mailman/listinfo/centos-virt

Hi,

On Mon, Feb 11, 2019 at 12:49:30PM +0200, Pasi K?rkk?inen
wrote:
> Hi,
> 
> On Sun, Feb 10, 2019 at 10:35:56PM -0500, Karl Johnson wrote:
> >    Hello,
> >    I built 4.9.155 for both el6 and el7, you can test them here:
> >   
[1]https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el6.x86_64.rpm
> >   
[2]https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el7.x86_64.rpm
> >    It works fine for me so far on el6, I'll update my pull request
later on
> >    GitHub with this version.
> >    [root at node-tmp1 ~]# cat /proc/version
> >    Linux version 4.9.155-34.el6.x86_64 ([3]mockbuild at
build.aerisnetwork.net)
> >    (gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) ) #1 SMP Sun
Feb 10
> >    11:20:04 EST 2019
> 
> Great, thanks a lot! I'll give it a go.
> 
With initial testing seems to work OK for me!
Meanwhile upstream kernel is up to v4.9.161, so let's update the sig-virt
kernel to that version..

Karl: Can you prepare a PR?



Thanks,

-- Pasi

> 
> -- Pasi
> 
> >    Karl
> >
> >    On Sat, Feb 9, 2019 at 10:32 AM Pasi K??rkk??inen <[4]pasik at
iki.fi> wrote:
> > 
> >      Hello everyone,
> > 
> >      Some of you might remember discussions earlier in 2017 (huh, long
time
> >      ago) on centos-virt list about Linux kernel tty/ldisc related
bug, which
> >      caused Xen dom0 kernel crashes for some people (and also more
easy to
> >      trigger crashes on other arches, like on hp pa-risc), but the bug
was
> >      difficult to reproduce for others/most people.
> > 
> >      Fix for this issue was merged to centos virt-sig Linux 4.9.48-29
kernel
> >      earlier in 2017, but reverted/deleted in 4.9.75-30 due to
problems with
> >      the patch. The patch in question was also merged to upstream
Linux
> >      kernel, and later reverted there aswell.
> > 
> >      But now finally the issue has been resolved in upstream Linux,
and the
> >      patches have been already backported to Linux 4.9.152 longterm
stable
> >      kernel. Changelog:
> >      [5]https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.152
> >      You can find the tty/ldisc patches there.
> > 
> >      So I propose we build the latest 4.9.155 kernel for CentOS
virt-sig for
> >      centos6 and centos7.
> > 
> >      Thanks,
> > 
> >      -- Pasi
> >

On Wed, Feb 27, 2019 at 4:44 AM Pasi K?rkk?inen <pasik at iki.fi> wrote:
> Hi,
>
> On Mon, Feb 11, 2019 at 12:49:30PM +0200, Pasi K?rkk?inen wrote:
> > Hi,
> >
> > On Sun, Feb 10, 2019 at 10:35:56PM -0500, Karl Johnson wrote:
> > >    Hello,
> > >    I built 4.9.155 for both el6 and el7, you can test them here:
> > >    [1]
> https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el6.x86_64.rpm
> > >    [2]
> https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el7.x86_64.rpm
> > >    It works fine for me so far on el6, I'll update my pull
request
> later on
> > >    GitHub with this version.
> > >    [root at node-tmp1 ~]# cat /proc/version
> > >    Linux version 4.9.155-34.el6.x86_64 ([3]
> mockbuild at build.aerisnetwork.net)
> > >    (gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) ) #1 SMP
Sun
> Feb 10
> > >    11:20:04 EST 2019
> >
> > Great, thanks a lot! I'll give it a go.
> >
>
> With initial testing seems to work OK for me!
> Meanwhile upstream kernel is up to v4.9.161, so let's update the
sig-virt
> kernel to that version..
>
> Karl: Can you prepare a PR?
>
>
>
> Thanks,
>
> -- Pasi
>
I built 4.9.161, works for me on el6:

[root at node-tmp1 ~]# cat /proc/version
Linux version 4.9.161-34.el6.x86_64 (mockbuild at build.aerisnetwork.net) (gcc
version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) ) #1 SMP Wed Feb 27 09:48:40
EST 2019

Only one strange thing, I had to run grub-install because Grub couldn't
find root device after reboot, not sure this has something to do with the
kernel upgrade.
Kernel 4.9.161 doesn't have the patch for CVE-2019-8912 yet so we might
wait until it get released.

I updated my PR: https://github.com/CentOS-virt7/xen-kernel/pull/18

https://repo.aerisnetwork.com/archive/kernel-4.9.161-34.el6.x86_64.rpm
https://repo.aerisnetwork.com/archive/kernel-4.9.161-34.el7.x86_64.rpm

Anthony Perard already tried to build my PR on the CBS but he was not able
to enable the SCL repo (
http://mirror.centos.org/centos/$releasever/sclo/$basearch/rh/) to get
devtoolset-7. We might need to get help from centos-devel.

Karl

>
>
> >
> > -- Pasi
> >
> > >    Karl
> > >
> > >    On Sat, Feb 9, 2019 at 10:32 AM Pasi K??rkk??inen <[4]pasik
at iki.fi>
> wrote:
> > >
> > >      Hello everyone,
> > >
> > >      Some of you might remember discussions earlier in 2017 (huh,
long
> time
> > >      ago) on centos-virt list about Linux kernel tty/ldisc
related
> bug, which
> > >      caused Xen dom0 kernel crashes for some people (and also
more
> easy to
> > >      trigger crashes on other arches, like on hp pa-risc), but
the bug
> was
> > >      difficult to reproduce for others/most people.
> > >
> > >      Fix for this issue was merged to centos virt-sig Linux
4.9.48-29
> kernel
> > >      earlier in 2017, but reverted/deleted in 4.9.75-30 due to
> problems with
> > >      the patch. The patch in question was also merged to upstream
Linux
> > >      kernel, and later reverted there aswell.
> > >
> > >      But now finally the issue has been resolved in upstream
Linux,
> and the
> > >      patches have been already backported to Linux 4.9.152
longterm
> stable
> > >      kernel. Changelog:
> > >     
[5]https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.152
> > >      You can find the tty/ldisc patches there.
> > >
> > >      So I propose we build the latest 4.9.155 kernel for CentOS
> virt-sig for
> > >      centos6 and centos7.
> > >
> > >      Thanks,
> > >
> > >      -- Pasi
> > >
>
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