linux-kernel - Re: mmotm 2009-06-30-12-50 dies during early boot

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Message-ID: <20090703081821.GA4051@redhat.com>
Date:	Fri, 3 Jul 2009 10:20:37 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Valdis.Kletnieks@...edu, linux-kernel@...r.kernel.org,
	James Morris <jmorris@...ei.org>,
	David Howells <dhowells@...hat.com>
Subject: Re: mmotm 2009-06-30-12-50 dies during early boot

On 07/02, Andrew Morton wrote:
>
> On Thu, 02 Jul 2009 21:52:28 -0400 Valdis.Kletnieks@...edu wrote:
> 
> > On Tue, 30 Jun 2009 12:51:30 PDT, akpm@...ux-foundation.org said:
> > > The mm-of-the-moment snapshot 2009-06-30-12-50 has been uploaded to
> > > 
> > >    http://userweb.kernel.org/~akpm/mmotm/
> > 
> > (Would have gotten this out the door earlier, but I got confused about what
> > that 'G' in the 'Tainted' meant, and put off reporting till I could reproduce
> > it without the NVidia driver. Turns out it was untainted except for the
> > warning I already reported...)
> > 
> > Dies fairly early during boot, somewhere in the first few lines of rc.sysinit.
> > 
> > It *looks* like it dies in this call:
> > 
> > 	wake_up_interruptible(&current->real_parent->signal->wait_chldexit);

Thanks! I'll send the patch soon.

selinux_commited_creds() should use __wake_up_parent(), it should not play
with ->wait_cldexit directly.


I wanted to fix this before,  but __wake_up_parent() was not exported.
And now I forgot to do this when added child_wait_callback().

My fault.

Oleg.

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