On Wed, Jul 18, 2018 at 10:38:08AM +0200, Michal Hocko <mhocko@xxxxxxxxxx> wrote: > > http://data.plan9.de/kvm_oom.txt > > That is something to bring up with kvm guys. Order-6 pages are > considered costly and success of the allocation is by no means > guaranteed. Unike for orders smaller than 4 they do not trigger the oom > killer though. So 4 is the magic barrier, good to know. In any case, as I said, it's just an example of various allocations that fail unexpectedly after 4.4, and it's by no means just nvidia. > vmalloc fallback would be a good alternative. Unfortunatelly I am not > able to find which allocation is that. What does faddr2line kvm_dev_ioctl_create_vm+0x40 > say? I suspect I can't run this for an installed kernel without sources/object files? In this case a precompiled kernel from ubuntu mainline-ppa. Running faddr2line kvm.ko ... just gives me: kvm_dev_ioctl_create_vm+0x40/0x5d1: kvm_dev_ioctl_create_vm at ??:? -- The choice of a Deliantra, the free code+content MORPG -----==- _GNU_ http://www.deliantra.net ----==-- _ generation ---==---(_)__ __ ____ __ Marc Lehmann --==---/ / _ \/ // /\ \/ / schmorp@xxxxxxxxxx -=====/_/_//_/\_,_/ /_/\_\
