Created attachment 165331 [details]
I frequently get call traces like the ones attached. These seem to occur only on certain networks (although perhaps only when in regions of intermittent coverage). Sometimes I can reassociate, and sometimes I need to reboot in order to reconnect.
I have no idea how to debug any of this, but it happens often enough that I thought it should be reported.
*** This bug has been marked as a duplicate of bug 91171 ***