linux-kernel - Re: [PATCH 5.15 00/78] 5.15.55-rc1 review

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Date:   Thu, 14 Jul 2022 12:04:15 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Maxim Levitsky <mlevitsk@...hat.com>
Cc:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        kvm list <kvm@...r.kernel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, linux@...ck-us.net, shuah@...nel.org,
        patches@...nelci.org, lkft-triage@...ts.linaro.org, pavel@...x.de,
        jonathanh@...dia.com, f.fainelli@...il.com,
        sudipm.mukherjee@...il.com, slade@...dewatkins.com,
        Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        X86 ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
        Alex Bennée <alex.bennee@...aro.org>,
        Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH 5.15 00/78] 5.15.55-rc1 review

On Thu, Jul 14, 2022 at 12:50:10PM +0300, Maxim Levitsky wrote:
> On Wed, 2022-07-13 at 18:22 +0530, Naresh Kamboju wrote:
> > On Wed, 13 Jul 2022 at 00:17, Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org> wrote:
> > > 
> > > This is the start of the stable review cycle for the 5.15.55 release.
> > > There are 78 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> > > 
> > > Responses should be made by Thu, 14 Jul 2022 18:32:19 +0000.
> > > Anything received after that time might be too late.
> > > 
> > > The whole patch series can be found in one patch at:
> > >         https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.55-rc1.gz
> > > or in the git tree and branch at:
> > >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> > > and the diffstat can be found below.
> > > 
> > > thanks,
> > > 
> > > greg k-h
> > 
> > Results from Linaro’s test farm.
> > Regressions on x86_64.
> > 
> > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> > 
> > 1) Kernel panic noticed on device x86_6 while running kvm-unit-tests.
> >    - APIC base relocation is unsupported by KVM
> 
> My 0.2 cent:
> 
> APIC base relocation warning is harmless, and I removed it 5.19 kernel:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc6&id=3743c2f0251743b8ae968329708bbbeefff244cf

Nice, but doesn't look relevant for stable trees.

> The 'emulating exchange as write' is also something that KVM unit tests trigger
> normally although this warning recently did signal a real and very nasty bug, which I fixed in this commit:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc6&id=33fbe6befa622c082f7d417896832856814bdde0

Already in the 5.18.2 release, doesn't look all that relevant for 5.15,
odd that it is showing up on 5.15.

thanks,

greg k-h