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Date:   Wed, 24 Oct 2018 18:15:55 +0100
From:   Laurent Vivier <>
To:     Andrei Vagin <>
Cc:, Jann Horn <>,
        James Bottomley <>,,,
        Alexander Viro <>,
        Eric Biederman <>,,
        Dmitry Safonov <>
Subject: Re: [PATCH v6 1/1] ns: add binfmt_misc to the user namespace

On 16/10/2018 17:22, Andrei Vagin wrote:
> On Wed, Oct 10, 2018 at 06:14:30PM +0200, Laurent Vivier wrote:
>> This patch allows to have a different binfmt_misc configuration
>> for each new user namespace. By default, the binfmt_misc configuration
>> is the one of the previous level, but if the binfmt_misc filesystem is
>> mounted in the new namespace a new empty binfmt instance is created and
>> used in this namespace.
>> For instance, using "unshare" we can start a chroot of another
>> architecture and configure the binfmt_misc interpreter without being root
>> to run the binaries in this chroot.
>> Signed-off-by: Laurent Vivier <>
> Acked-by: Andrei Vagin <>
> Thanks,
> Andrei

I don't konw who is the maintainer for this part, but is there any
chance to have this merged in 4.20?


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