It appears this bug was introduced in v3.9-rc1. I started a kernel bisect between v3.8 final and v3.9-rc1. The first test kernel is built up to commit: b274776c54c320763bc12eb035c0e244f76ccb43
The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1200243/
It appears this bug was introduced in v3.9-rc1. I started a kernel bisect between v3.8 final and v3.9-rc1. The first test kernel is built up to commit: 63bc12eb035c0e2 44f76ccb43
b274776c54c3207
The test kernel can be downloaded from: kernel. ubuntu. com/~jsalisbury /lp1200243/
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