I emailed Dan Williams, igb driver maintainer, and he pointed me at this commit. Said it had not been picked up in the 3.11 tree to his knowledge, but was in other 3.1x trees:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/dma/ioat?id=da87ca4d4ca101f177fffd84f1f0a5e4c0343557 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1291113 Title: Intel igb driver infinite loop in ksoftirqd, uses 100% of cpu 0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1291113/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
