From: Steven Rostedt <rostedt@goodmis.org>
Date: Tue, 28 Jan 2014 15:57:56 -0500

At Red Hat we base our real-time kernel off of 3.10.27 and do lots of
stress testing on that kernel. This has discovered some bugs that we
can hit with the vanilla 3.10.27 kernel (no -rt patches applied).

I sent out a bug fix that can cause a crash with the current 3.10.27
when you add and then remove the sit module. That patch is obsoleted by
these patches, as that patch was not enough.

A previous patch that was backported:

  Upstream commit 205983c43700ac3a81e7625273a3fa83cd2759b5
  sit: allow to use rtnl ops on fb tunnel

Had a depenency on commit 5e6700b3bf98 ("sit: add support of x-netns")
which was not backported. The dependency was only on part of that
commit which is what I backported.

The other upstream commit 9434266f2c645d4fcf62a03a8e36ad8075e37943
sit: fix use after free of fb_tunnel_dev

fixes another bug we encountered, it also fixes the 3.10.27 bug
where removing the sit module cause the crash. This is the patch
that obsoletes my previous patch.

Greg, these have my blessing, please apply these to 3.10 -stable,
thanks a lot!