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

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:
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

Hello,

I built 4.9.155 for both el6 and el7, you can test them here:

https://repo.aerisnetwork.com/archive/kernel-4.9.155-34.el6.x86_64.rpm
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 (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

Karl

On Sat, Feb 9, 2019 at 10:32 AM Pasi K?rkk?inen <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:
> 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
> CentOS-virt at centos.org
> https://lists.centos.org/mailman/listinfo/centos-virt
>
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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