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Date:   Fri, 5 Mar 2021 11:30:55 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Sasha Levin <sashal@kernel.org>
Cc:     Salvatore Bonaccorso <carnil@debian.org>,
        stable <stable@vger.kernel.org>,
        Laurent Vivier <laurent@vivier.eu>,
        YunQiang Su <ysu@wavecomp.com>, Helge Deller <deller@gmx.de>
Subject: Re: Please apply commit 2347961b11d4 ("binfmt_misc: pass binfmt_misc
 flags to the interpreter") to 5.10.y and later
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 <YEFJVENyU9QaO/NK@sashalap>
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On Thu, Mar 04, 2021 at 03:55:48PM -0500, Sasha Levin wrote:
> On Tue, Mar 02, 2021 at 01:57:46PM +0100, Salvatore Bonaccorso wrote:
> > Hi
> > 
> > 2347961b11d4 ("binfmt_misc: pass binfmt_misc flags to the
> > interpreter") was applied in mainline and included in 5.12-rc1.
> > 
> > Probably you could argue here on both a bugfix or feature addition.
> > 
> > My intention is the following: In the Debian bugreport
> > https://bugs.debian.org/970460 an issue was raised with qemu-user
> > which needs to know if it has to preserve the argv[0]. As shown there
> > it is an issue with multi-call binaries.
> > 
> > So again, not sure if you want to consider it, but defintively
> > Yunqiang Su and others would appreicate. If it gets backported we will
> > pick it up automatically.
> 
> Given it needs changes in userspace too I'm not sure it qulifies as a
> fix per-se. Though as you point out, it's really borderline.
> 
> Generally I would just take it, but it affects interactions with
> userspace, so I feel less comfortable with this.

Yes, I'm not ok with taking this either at this point in time, as it
requires userspace changes.

thanks,

greg k-h