Comment 11 for bug 1546320

I build a test kernel and made it available on a PPA[1] for verification in order to bring confidence for the SRU process.

This test kernel revert the offending commit "470ed447: workqueue: make sure delayed work run in local cpu".

Instructions
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# Add the PPA to your system
$ sudo add-apt-repository ppa:slashd/bug1546320-hotfix

# Resynchronize the package index files from their sources
$ sudo apt-get update

# Installing the packages desired for installation
$ sudo apt-get install linux-image-3.13.0-78-generic=3.13.0-78.122hf1546320v20160218b6 -y
$ sudo apt-get install linux-headers-3.13.0-78-generic=3.13.0-78.122hf1546320v20160218b6 -y

Note: A reboot will be necessary for the hotfix kernel to be effective and taken into account by your systems.
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[1] - https://launchpad.net/~slashd/+archive/ubuntu/bug1546320-hotfix
[2] - https://wiki.ubuntu.com/Kernel/kernel-sru-workflow

Regards,
Eric