linux-kernel - Re: next-20130607 BUG: sleeping function called from invalid context at lib/idr.c:424

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Date:	Wed, 12 Jun 2013 18:46:53 -0700
From:	Davidlohr Bueso <davidlohr.bueso@...com>
To:	Valdis.Kletnieks@...edu
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: next-20130607 BUG: sleeping function called from invalid
 context at lib/idr.c:424

On Wed, 2013-06-12 at 21:22 -0400, Valdis.Kletnieks@...edu wrote:
> On Tue, 11 Jun 2013 11:38:20 -0700, Davidlohr Bueso said:
> 
> > > Looking at 'git blame', I see a bunch of patches from Davidlohr Bueso on 06/07
> > > that hit ipc/util.c and friends.
> >
> > Yeah, this is my fault. It was originally reported by Fengguang:
> > http://www.spinics.net/lists/kernel/msg1545633.html#.UbYI9qqdmV8
> >
> > Sasha proposed a fix to use GFP_ATOMIC in idr_preload instead of
> > GFP_KERNEL:
> >
> > http://lkml.org/lkml/2013/6/10/322
> 
> Confirming that Sasha's proposed fix eliminates the BUG in my kernel,
> so if GFP_ATOMIC is acceptable otherwise, feel free to stick a Tested-By:
> on it of you like.

Actually, this is the fix we are going with:
https://lkml.org/lkml/2013/6/11/705

Thanks,
Davidlohr



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