1 #00 pc 0005138c libc.so (__ioctl+8) 2 #01 pc 0002140f libc.so (ioctl+30) 3 #02 pc 00039535 libbinder.so (android::IPCThreadState::talkWithDriver(bool)+204) 4 #03 pc 00039633 libbinder.so (android::IPCThreadState::getAndExecuteCommand()+10) 5 #04 pc 00039b57 libbinder.so (android::IPCThreadState::joinThreadPool(bool)+38) 6 #05 pc 00000c21 mediaserver (main+104) 7 #06 pc 00084b89 libc.so (__libc_init+48) 8 #07 pc 00000b77 mediaserver (_start_main+38) 9