18 Sep
2016
18 Sep
'16
5:35 a.m.
(Sorry if I sent this mail twice, I'm having troubles with my mail client) I've experienced locks too, nothing in logs that I could find, but after swaping back to the main kernel, from linux-ck, everything was fine. Maybe this is related for you too? The update that caused the lockups seems to match http://ck-hack.blogspot.fr/2016/09/bfs-497-linux-47-ck4.html
Alas I still have no explanation for the random lockups some people are seeing, but I have seen reports of it happening on mainline kernels as well now, so while I'm always suspicious of my own code, there is also the chance that BFS exacerbates an issue in mainline. Something that appears common is onboard Intel graphics with the Haswell chipset.