Messages in this thread | | | From | Roland Dreier <> | Date | Fri, 20 Jan 2012 00:23:52 -0800 | Subject | Re: kernel BUG at drivers/iommu/intel-iommu.c:1767 on F16 3.1.1-2.fc16.x86_64 |
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On Thu, Jan 19, 2012 at 12:57 AM, Albert Strasheim <fullung@gmail.com> wrote: > Just checking up on this issue. Is there any further testing or > information we can provide to help make a fix happen?
I'm not likely to be much help on VT-d issues, but maybe it would be useful to dump all the values in the BUG_ON if its going to trigger, ie just before
BUG_ON(addr_width < BITS_PER_LONG && (iov_pfn + nr_pages - 1) >> addr_width);
add
if (addr_width < BITS_PER_LONG && (iov_pfn + nr_pages - 1) >> addr_width) pr_err("VT-d BUG! addr_width %d < %d (iov_pfn 0x%lx nr_pages %ld)\n", addr_width, BITS_PER_LONG, iov_pfn, nr_pages);
and report what that prints.
- R.
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