linux-kernel - Re: [PATCH 2.6.24-rc3-mm1] IPC: consolidate sem_exit_ns(), msg_exit_ns and shm_exit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 27 Nov 2007 09:19:34 +0100
From:	Pierre Peiffer <pierre.peiffer@...l.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, containers@...ts.osdl.org
Subject: Re: [PATCH 2.6.24-rc3-mm1] IPC: consolidate sem_exit_ns(), msg_exit_ns
 and shm_exit_ns()



Andrew Morton wrote:
> On Mon, 26 Nov 2007 22:44:38 -0800 Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
>> On Fri, 23 Nov 2007 17:52:50 +0100 Pierre Peiffer <pierre.peiffer@...l.net> wrote:
>>
>>> sem_exit_ns(), msg_exit_ns() and shm_exit_ns() are all called when an ipc_namespace is
>>> released to free all ipcs of each type.
>>> But in fact, they do the same thing: they loop around all ipcs to free them
>>> individually by calling a specific routine.
>>>
>>> This patch proposes to consolidate this by introducing a common function, free_ipcs(),
>>> that do the job. The specific routine to call on each individual ipcs is passed as
>>> parameter. For this, these ipc-specific 'free' routines are reworked to take a
>>> generic 'struct ipc_perm' as parameter.
>> This conflicts in more-than-trivial ways with Pavel's
>> move-the-ipc-namespace-under-ipc_ns-option.patch, which was in
>> 2.6.24-rc3-mm1.
>>
> 
> err, no, it wasn't that patch.  For some reason your change assumes that
> msg_exit_ns() (for example) doesn't have these lines:
> 
>         kfree(ns->ids[IPC_MSG_IDS]);
>         ns->ids[IPC_MSG_IDS] = NULL;
> 
> in it.

Yes, in fact, I've made this patch on top of this one:
http://lkml.org/lkml/2007/11/22/49

As the patch mentioned by this previous thread was acked by Cedric and Pavel,
I've assumed that you will take both. But I've not made this clear, sorry.

-- 
Pierre
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/