crash on Android Lollipop when exiting from application

00 pc 000962ee /system/lib/libandroid_runtime.so (JNIAudioPortCallback::~JNIAudioPortCallback()+21)

I/DEBUG ( 181): #01 pc 00096319 /system/lib/libandroid_runtime.so (JNIAudioPortCallback::~JNIAudioPortCallback()+4) I/DEBUG ( 181): #02 pc 0000ec55 /system/lib/libutils.so (android::RefBase::decStrong(void const*) const+40) I/DEBUG ( 181): #03 pc 0004b075 /system/lib/libmedia.so (android::sp::~sp()+10) I/DEBUG ( 181): #04 pc 00038451 /system/lib/libc.so (__cxa_finalize+132) I/DEBUG ( 181): #05 pc 00011e5b /system/lib/libc.so (exit+6)

Any clues ?