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Date:   Wed, 1 Sep 2021 08:20:44 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Dongliang Mu <mudongliangabcd@gmail.com>
Cc:     Sasha Levin <sashal@kernel.org>, stable@vger.kernel.org
Subject: Re: Linux kernel 4.19 and below misses the patch - "fbmem: add
 margin check to fb_check_caps()"
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On Tue, Aug 31, 2021 at 02:47:22PM +0800, Dongliang Mu wrote:
> Hi stable maintainers,
> 
> It seems that Linux kernel 4.19 and below miss the patch - "fbmem: add
> margin check to fb_check_caps()" [1]. Linux kernel 5.4 and up is
> already merged this patch[2].
> 
> Are there any special issues about this patch? Why do maintainers miss
> such a patch?

Because it does not apply to those older kernels.  If you feel it should
be included there, can you please provide a working backport of the
patch so that we can apply it?

thanks,

greg k-h