[Bug 1314134] Re: network stack never yields control on busy networks

[Chris J Arges]

Hello Colin, or anyone else affected,

Accepted grub2 into trusty-proposed. The package will build now and be
available at
http://launchpad.net/ubuntu/+source/grub2/2.02~beta2-9ubuntu1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: grub2 (Ubuntu Trusty)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1314134

Title:
  network stack never yields control on busy networks

Status in “grub2” package in Ubuntu:
  Fix Released
Status in “grub2” source package in Trusty:
  Fix Committed

Bug description:
  [Impact] GRUB's network stack tries to process all incoming packets, and thus never or rarely yields control back to other parts of GRUB when the network is busy with e.g. lots of ARP traffic.
  [Test Case] Use GRUB to netboot a system on a busy network; ensure that it is responsive.  (I've had reports of 90-minute delays in interactive response on some systems, so in those cases the difference should be dramatic and easily observable.)
  [Regression Potential] Confined to netbooting.

  These upstream patches should fix this:

    https://lists.gnu.org/archive/html/grub-devel/2014-01/msg00119.html
    https://lists.gnu.org/archive/html/grub-devel/2014-01/msg00118.html

  I plan to backport these for 14.04.1.

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