Occasionally, patches contained in upstream stable updates cause regressions.

The policy for Ubuntu is to identify and revert the offending patches, and then generally perform the following steps:

 * Investigate whether upstream has resolved the problem with patches which are queued for stable updates
 * Notify the upstream subsystem maintainer of the problem
 * Track fixed which are provided and reapply the patches when a solution is found

In order to keep track of these reverted commits, the stable kernel team will open bugs to track them. These bugs should be used as follows:

 * Create the bug and list the commits which are to be reverted
 * Apply the kernel-stable-next tag 
 * Nominate the bug for all series from which the commit(s) are reverted
 * Set to "In Progress" for all series which require future tracking
 * Set to "Wontfix" for any series for which the commit(s) will forever be dropped
 * Set to "Fix Released" when a complete solution has been found and applied to the master-next branch