linux-kernel - Re: [PATCH v1 2/4] ipc: Use proper ipc namespace

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Date:   Tue,  3 May 2022 15:39:53 +0200
From:   Alexey Gladkov <legion@...nel.org>
To:     LKML <linux-kernel@...r.kernel.org>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Alexander Mikhalitsyn <alexander.mikhalitsyn@...tuozzo.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Daniel Walsh <dwalsh@...hat.com>,
        Davidlohr Bueso <dbueso@...e.de>,
        Kirill Tkhai <ktkhai@...tuozzo.com>,
        Linux Containers <containers@...ts.linux.dev>,
        Manfred Spraul <manfred@...orfullife.com>,
        Serge Hallyn <serge@...lyn.com>,
        Varad Gautam <varad.gautam@...e.com>,
        Vasily Averin <vvs@...tuozzo.com>
Subject: Re: [PATCH v1 2/4] ipc: Use proper ipc namespace 

On Mon, May 02, 2022 at 11:09:22AM -0500, Eric W. Biederman wrote:
> Alexey Gladkov <legion@...nel.org> writes:
> 
> > As Eric Biederman pointed out, changing the namespace broke checkpoint
> > restore. I have reverted my previous changes.
> 
> Can you remind me the bug that is being fixed here?
> 
> I am probably just going to fast to see it, but it would be good to have
> it described in the commit comment.

It was preparation for the "ipc: Check permissions for checkpoint_restart
sysctls at open time". I wanted to split the commit and make it more readable,
but it looks like I just confused everyone. This change should be part of the
next commit.

Here is a new version of the patchset where I moved the bugfix to a separate
commit as you requested in the next email.

Does that look better?

--

Alexey Gladkov (4):
  ipc: Use the same namespace to modify and validate
  ipc: Remove extra1 field abuse to pass ipc namespace
  ipc: Check permissions for checkpoint_restart sysctls at open time
  ipc: Remove extra braces

 ipc/ipc_sysctl.c | 108 +++++++++++++++++++++--------------------------
 1 file changed, 49 insertions(+), 59 deletions(-)

-- 
2.33.3