linux-kernel - Re: Kernel panic with user namespaces

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Message-ID: <87pp5mqce9.fsf@x220.int.ebiederm.org>
Date:	Wed, 27 May 2015 10:16:14 -0500
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Josh Boyer <jwboyer@...oraproject.org>
Cc:	Alexander Larsson <alexl@...hat.com>,
	containers@...ts.linux-foundation.org,
	"Linux-Kernel\@Vger. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: Kernel panic with user namespaces

Josh Boyer <jwboyer@...oraproject.org> writes:

> On Tue, May 26, 2015 at 12:31 PM, Eric W. Biederman
> <ebiederm@...ssion.com> wrote:
>> Alexander Larsson <alexl@...hat.com> writes:
>>
>>> On mån, 2015-05-18 at 16:39 +0200, Alexander Larsson wrote:
>>>
>>> Didn't get any replies to the below kernel panic (testcase attached),
>>> which seems rather important to fix. Reposting to a wider audience.
>>
>> Buggered backport greg already has the fix somewhere in his queue.
>
> Is it fs_pin-allow-for-the-possibility-that-m_list-or-s_list-go-unused.patch
> or mnt-fail-collect_mounts-when-applied-to-unmounted-mounts.patch ?
> (Or both I guess.)  Those are the only 2 patches queued for 4.0 stable
> right now.

Both fix the buggered backport.

fs_pin-allow-for-the-possibility-that-m_list-or-s_list-go-unused.patch
fixes the crash.

Eric
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