Re: [PATCH] shm: fix a race between shm_exit() and shm_init()

Manuel Lauss
2011-08-03T10:04:14Z

On Wed, Aug 3, 2011 at 10:19 AM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Tue, Aug 2, 2011 at 10:05 PM, Marc Zyngier <marc.zyngier@arm.com> wrote:
>>
>> Reordering the initcalls seems the easiest solution, but it is still very
>> fragile...
>
> So that's what I tried to do, by making it a "pure_initcall()". Even
> that didn't seem to be enough according to Manuel.
>
> Can you try my patch (that makes just that ipc ns init be a
> pure_initcall(), together with your hack on top of Andrew's? What is
> it that happens so early that even pure_initcall() hasn't been done
> yet?

I stuck a few printk's in the init path, the first "schedule()" in
init/main.c::rest_init()
starts it. I don't know enough kernel (yet) to trace it further, sorry.

Manuel