Trying to debug another issue (with a wireless driver), by chance I found this "possible circular locking dependency". Maybe some dev might want to have a look at those. https://bugzilla.kernel.org/attachment.cgi?id=72072 https://bugzilla.kernel.org/attachment.cgi?id=72073
Here is another, I guess mostly identical though, lockdep debug message: https://bugzilla.kernel.org/attachment.cgi?id=72088
This "bug" is not really affecting me in day to day work (yet?). It surfaced due to enabling CONFIG_LOCKDEP to debug a wireless driver issue, here: https://bugzilla.kernel.org/show_bug.cgi?id=42576
Closing, if this is still affecting you on a newer kernel please reopen.