Dan, I haven’t tried to directly reproduce the bug, but I have a few ideas. If I can free up some time I’ll see if I can reproduce it.
Dave Muysson | Cloud Architect [email protected] <mailto:[email protected]> | (613) 562-2525 x 510 <tel:6135622525,510> | 360pi.com <http://360pi.com/> > On Oct 13, 2015, at 9:20 AM, Dan Streetman <[email protected]> > wrote: > > Hi Dave, > > are you able to reproduce the bug? The trace by itself isn't terribly > helpful, all it really says is the pageblock spans zones, which means > move_freepages_block() logic for detecting that failed for some reason. I > have a debug kernel ppa here: > pad.lv/ppa/ddstreet/lp1497428 > > that includes additional debug if the problem happens (it also should > prevent the BUG()). If you can use that kernel to trigger this and send > the resulting debug output it would help very much :-) > > when the problem reproduces, in the system log you should see: > page_zone(start_page) !=page_zone(end_page) > > and more debug following that. It should not trigger BUG() though, so > you may need to check the logs periodically. > > Thanks! > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1497428 > > Title: > kernel BUG at /build/buildd/linux-3.13.0/mm/page_alloc.c:968 > > Status in linux package in Ubuntu: > In Progress > Status in linux source package in Trusty: > In Progress > > Bug description: > The kernel triggers a BUG when it finds it is in move_freepages() but > the start and end pfns for the move are in different zones. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1497428/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1497428 Title: kernel BUG at /build/buildd/linux-3.13.0/mm/page_alloc.c:968 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1497428/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
