Hi, seems like we have two problems: The first (origin) problem seems to be already fixed by Mike's patch. I applied the patch against linux-4.1.8, rebooted several times without a problem. But I'll keep testing for sure. The second problem is a new bug within linux-4.1.9: I experience the > NMI watchdog: BUG: soft lockup - CPU#3 stuck for 23s! freeze now on all my systems (virtual machines *and* physical systems; Gentoo boxes, Debian boxes, with and without dm (LUKS), with XFS or ext4 -- looks like a general problem). I will post it to LKML itself (I don't have a trace about what's hanging). Thanks for all your time and help! -Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html