crash on synchronous loadModel

When system configured in PRC to “support-threads”, and loadModel is called multiple times without callback

self.model = loader.loadModel(self.bam_model)

, I sometimes get segmentation fault (not always). When I set in PRC “support-threads #f”, problem disappears (but it prevents me from loading other models asynchronousely).

output of terminal under gdb is as the following:

Any idea?

my system is: ubuntu 14.04, python 2.7.6, wxpython, panda 1.9.1 (master branch)
With best regards

What other threading-related things do you have going on in your application?

Perhaps you could share the model plus the minimal set of lines of code so we could reproduce the crash?