We have exactly the same issue with latest upstream kernel from ubuntu, i.e. 4.2.0-18-generic.
This issue is really annoying and looks like it doesn't depend on load. Means it can hang with only few processes accessing CIFS share. Looks like it is some kind of race condition with exclusive lock request on CIFS share. Our main proccess uses those and constantly got hanged. Sometimes it is a matter of days, sometimes it hangs within 15 minutes. #bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1428045 Title: CIFS hangs at cifs_oplock_break To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1428045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
