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Date: Mon, 17 May 2010 11:02:11 +0200
From: Olaf Hering <olaf@aepfle.de>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>, Peter Zijlstra <peterz@infradead.org>
Subject: Re: qemu/nfsroot: BUG: sleeping function called from invalid
 context at 2.6.33.3-rt19-i686-pc/kernel/rtmutex.c:684
Message-ID: <20100517090211.GA7431@aepfle.de>
References: <20100516213333.GA27132@aepfle.de>
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On Mon, May 17, Thomas Gleixner wrote:

> On Sun, 16 May 2010, Olaf Hering wrote:
> > 
> > Running 2.6.33.3-rt19 in qemu with nfsroot floods dmesg with lots of
> > warnings like
> > 
> > BUG: sleeping function called from invalid context at /opt/cross/sys-root/i686-linux/usr/src/linux-2.6.33-i686-kernel-source/kernel/rtmutex.c:684
> > 
> > This happens already when the kernel mounts the nfsroot filesystem,
> > if I interpret the dmesg output below correctly.
> > 
> > Any idea how to fix the reported BUG?
> 
> Yup, patch below should do the trick. It fixes the other user of this
> as well.

Yes, no BUG flood with this patch applied.
Thanks.

Olaf