linux-kernel - Re: [PATCH 6.3 00/13] 6.3.12-rc1 review

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Date:   Tue, 4 Jul 2023 09:47:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
Cc:     Naresh Kamboju <naresh.kamboju@...aro.org>, stable@...r.kernel.org,
        patches@...ts.linux.dev, linux-kernel@...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,
        srw@...dewatkins.net, rwarsow@....de, conor@...nel.org,
        Vegard Nossum <vegard.nossum@...cle.com>
Subject: Re: [PATCH 6.3 00/13] 6.3.12-rc1 review

On Tue, Jul 04, 2023 at 02:13:03PM +0530, Harshit Mogalapalli wrote:
> Hi Greg,
> 
> On 04/07/23 1:54 pm, Greg Kroah-Hartman wrote:
> 
> > > > 
> > > > 
> > > > While running LTP hugetlb testing on x86 the following kernel BUG noticed
> > > > on running stable-rc 6.3.12-rc1.
> > > > 
> > > > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> > > > 
> > > > Crash log:
> > > > =========
> > > > [   54.386939] hugefallocate01 (410): drop_caches: 3
> > > > g tests.......
> > > 
> > > And this worked on 6.3.11 just fine?
> > > 
> > > Trying to narrow down what would have caused this...
> > > 
> > > Any chance you can run Linus's tree with thie LTP test as well?
> > 
> > Ah, I can hit this here locally too!  Let me bisect...
> 
> 
> Have you looked at Patch 9 of this series:
> 
> https://lore.kernel.org/stable/2023070416-wow-phrasing-b92c@gregkh/T/#m12068530e846ac8b9668bd83941d82ec3f22ac15
> 
> Looks very much related, it also has a note on Backporting.
> As I think it could be related, I am sharing this.(But haven't tested
> anything)

Yes, that's the offending patch.  I should have read over the full
changelogs before doing bisection, but bisection/test proved that this
was not correct for 6.3.y at this point in time.

thanks,

greg k-h