linux-kernel - Re: kernel BUG at drivers/iommu/intel-iommu.c:1767 on F16 3.1.1-2.fc16.x86

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Message-ID: <CAL1RGDX9P7tmGTkByEid17FrSFwdAW+4=mb9eUxc_uHvmFOeSg@mail.gmail.com>
Date:	Thu, 8 Dec 2011 10:29:47 -0800
From:	Roland Dreier <roland@...estorage.com>
To:	Albert Strasheim <fullung@...il.com>
Cc:	linux-rdma@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: kernel BUG at drivers/iommu/intel-iommu.c:1767 on F16 3.1.1-2.fc16.x86_64

On Thu, Dec 8, 2011 at 9:56 AM, Albert Strasheim <fullung@...il.com> wrote:
> I think the BIOS has VT-d enabled. dmesg says:
>
> PCI-DMA: Intel(R) Virtualization Technology for Directed I/O

Yes, you're crashing in the VT-d code.

If you don't care about that, you can boot with the kernel parameter
"intel_iommu=off"
as a workaround, but it would be nice to get to the bottom of this.

 - R.
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