linux-kernel - Re: [RFC PATCH] x86/mce/inject: Fix printk deadlock causing mce_timed

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Date:   Tue, 11 May 2021 10:44:40 +0800
From:   Lv Ying <lvying6@...wei.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     <tony.luck@...el.com>, <linux-edac@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <mchehab+huawei@...nel.org>
Subject: Re: [RFC PATCH] x86/mce/inject: Fix printk deadlock causing
 mce_timed_out panic

On Mon, May 10, 2021 at 11:44:42AM +0200, Borislav Petkov wrote:
> + Mauro.
> 
> On Mon, May 10, 2021 at 11:36:04AM +0200, Borislav Petkov wrote:
> > On Tue, May 11, 2021 at 09:33:10AM +0800, Lv Ying wrote:
> > > This panic happend on 4.18 kernel
> > 
> > When you report bugs and send patches to lkml and maintainers, *always*
> > do that against the latest upstream version.
> > 
> > This is not the first time people from Huawei send bug reports and
> > "fixes" for old kernels.
> > 
> > Please let your colleagues and whoever else at Huawei is sending patches
> > and reporting bugs - *always* test and report bugs against the latest
> > upstream kernel - not some old version!
> > 
> > If you want bugs against
> > 
> > 4.18.0-147.5.1.6.h429.eulerosv2r10.x86_64
> > 
> > fixed, go report that to whoever has made that kernel - not upstream.
> > 
> > Now, if you want to improve the upstream kernel and can trigger the same
> > thing with the upstream kernel, pls give the *exact* full information I
> > asked you before so that I am able to reproduce that here independently
> > and then we can take it from there.
> > 
> > HTH.
>

Boris, thanks again for your time to explain the detailed and standard
upstream bug report process.
Next, I will test on the latest upstream kernel(indpendent to any distro).
If I can reproduce this problem, I will send detailed test script.

Thanks
Lv Ying