The purpose of testing v4.12-rc7 is to narrow down that last kernel version that had the hang bug(The bad kernel) and the first kernel version that did not(The good kernel). This will allow us to identify the exact commit that fixes the hang bug. This can be accomplished by performing a "Reverse" bisect[0]. Once we know the commit that fixes the bug, we can SRU it to all the previous Ubuntu releases.
Are you not able to test for the hang bug without compiling the DKMS-OpenAFS packages? If so, did they compile okay when you tested v4.12-rc8?
The purpose of testing v4.12-rc7 is to narrow down that last kernel version that had the hang bug(The bad kernel) and the first kernel version that did not(The good kernel). This will allow us to identify the exact commit that fixes the hang bug. This can be accomplished by performing a "Reverse" bisect[0]. Once we know the commit that fixes the bug, we can SRU it to all the previous Ubuntu releases.
Are you not able to test for the hang bug without compiling the DKMS-OpenAFS packages? If so, did they compile okay when you tested v4.12-rc8?
[0] https:/ /wiki.ubuntu. com/Kernel/ KernelBisection