On Tue, Aug 2, 2016 at 9:38 AM, Chris Murphy <li...@colorremedies.com> wrote: > Yesterday I saw oom killer knocking off processes during a simple cp > -a from one Btrfs to another, in a VM, with kernel > 4.8.0-0.rc0.git3.1.fc25.x86_64. The call trace looks different than > Markus' so I'm not sure it's the same problem. It's not always > reproducible. It hasn't happened on 4.7.0 though. According ot koji > this is Linux v4.7-6438-gc624c86 > > This is 'journalctl -o short-monotonic -b-4 -k' > > https://drive.google.com/open?id=0B_2Asp8DGjJ9ZC1JSDJnaWpnSEE
Btrfs volume 2 is created at [ 625.769736] and mounted at [ 640.119150], with the copy starting shortly after that. OOM happens at [ 856.212658] . There are a bunch of earlier bug messages, BUG: sleeping function called from invalid context at mm/slab.h:393. -- Chris Murphy
