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

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Message-ID: <4972.1371086526@turing-police.cc.vt.edu>
Date:	Wed, 12 Jun 2013 21:22:06 -0400
From:	Valdis.Kletnieks@...edu
To:	Davidlohr Bueso <davidlohr.bueso@...com>
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 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.

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