Dan, Just checking in with a status update. Our main system experiencing the issue is a production system, so loading the custom kernel wasn’t an option at the time. I have since created a clone of our production server and am trying to reproduce the issue now.
I will let you know once the issue reoccurs on our cloned environment. Dave Muysson | Cloud Architect dave.muys...@360pi.com <mailto:dave.muys...@360pi.com> | (613) 562-2525 x 510 <tel:6135622525,510> | 360pi.com <http://360pi.com/> > On Oct 13, 2015, at 9:37 AM, Dave Muysson <dave.muys...@360pi.com> wrote: > > 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 > dave.muys...@360pi.com <mailto:dave.muys...@360pi.com> | (613) 562-2525 x > 510 <tel:6135622525,510> | 360pi.com <http://360pi.com/> > > > >> On Oct 13, 2015, at 9:20 AM, Dan Streetman <dan.street...@canonical.com >> <mailto:dan.street...@canonical.com>> 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 >> <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 Kernel Packages, which is subscribed to linux in Ubuntu. 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 -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
