I didnt know what exactly is the component I should be targeting. Most likely not filesystems. The kernel version I added, does work, but any effort 4.4 series or newer has been a result not booting system which has been fixed using earlier kernel. There is some regression that prevents you from booting from nvme ssd. Grub works, but you just cant boot from the disk.
Please read https://www.kernel.org/pub/linux/docs/lkml/reporting-bugs.html and try to provide the missing details to this report. @Admins: can we tune Bugzilla to _require_ more details when opening a new bug? And maybe urge users to turn to the mailing list first? Or is this no longer prefered?