linux-kernel - Re: [GIT PULL] namespace updates for v3.17-rc1

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Message-ID: <87k362vsr5.fsf@x220.int.ebiederm.org>
Date:	Thu, 21 Aug 2014 09:09:50 -0500
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Richard Weinberger <richard@....at>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"libvir-list\@redhat.com" <libvir-list@...hat.com>,
	"Daniel P. Berrange" <berrange@...hat.com>
Subject: Re: [GIT PULL] namespace updates for v3.17-rc1

Richard Weinberger <richard@....at> writes:

> Am 21.08.2014 15:12, schrieb Christoph Hellwig:
>> On Wed, Aug 20, 2014 at 09:53:49PM -0700, Eric W. Biederman wrote:
>>> Richard Weinberger <richard.weinberger@...il.com> writes:
>>>
>>>> On Wed, Aug 6, 2014 at 2:57 AM, Eric W. Biederman <ebiederm@...ssion.com> wrote:
>>>>
>>>> This commit breaks libvirt-lxc.
>>>> libvirt does in lxcContainerMountBasicFS():
>>>
>>> The bugs fixed are security issues, so if we have to break a small
>>> number of userspace applications we will.  Anything that we can
>>> reasonably do to avoid regressions will be done.
>> 
>> Can you explain the security issues in detail?  Breaking common
>> userspace like libvirt-lxc with just a little bit of handwaiving is
>> entirely unacceptable.
>
> It looks like commit 87b47932f40a11280584bce260cbdb3b5f9e8b7d in
> git.kernel.org/cgit/linux/kernel/git/ebiederm/user-namespace.git for-next
> unbreaks libvirt-lxc.
> I hope it hits Linus tree and -stable before the offending commit hits users.

I plan to send the pull request to Linus as soon as I have caught my
breath (from all of the conferences this week) that I can be certain I
am thinking clearly and not rushing things.

Eric
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