Well, this was a bug that no one caught in -mm as we all seem to be
running with CONFIG_SYSFS_DEPRECATED disabled.  There was a long
discussion on lkml last week, and here's the patch that should fix it
that is going to Linus in a day or so (it's in my tree, but I'm supposed
to be on vacation right now...)

Let me know if this works for you or not.

I don't know if it worked for Stephen, but it certainly worked to get rid of the 
last three rename-induced stack traces on my system.

rick jones