This bug is probably what I describe in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818502
Bug in Debian 3.16 kernel (kernel from current stable Jessie) used as KVM hypervisor on older Intel CPU. ** Bug watch added: Debian Bug tracker #818502 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818502 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1423672 Title: ext4_mb_generate_buddy:756: group N, block bitmap and bg descriptor inconsistent: X vs Y To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1423672/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs