Comment 12 for bug 1783906

I built a test kernel with debug output as requested by upstream. Can you test this kernel and post your syslog or dmesg output?

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1783906

This kernel should exhibit the bug, but will write to syslog with output like:
***-> Value of spd_limit: N
***-> Value of sstatus: N
***-> Value of spd: N
***-> Value of mask: N

I did a dump_stack in the function, so you should see a new stack trace as well.