. Thread 5 (Thread 0x46fff3e0 (LWP 1960)): #0 0x401c20e0 in ?? () No symbol table info available. #1 0x401d5426 in ?? () No symbol table info available. #2 0x401d5426 in ?? () No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?) . Thread 4 (Thread 0x4665d3e0 (LWP 1959)): #0 0x401c20e0 in ?? () No symbol table info available. #1 0x401d5426 in ?? () No symbol table info available. #2 0x401d5426 in ?? () No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?) . Thread 3 (Thread 0x45aff3e0 (LWP 1958)): #0 0x40fb2e54 in poll () from /lib/arm-linux-gnueabihf/libc.so.6 No symbol table info available. #1 0x40596d8e in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 No symbol table info available. #2 0x40596d8e in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?) . Thread 2 (Thread 0x450a43e0 (LWP 1957)): #0 0x40fb2e54 in poll () from /lib/arm-linux-gnueabihf/libc.so.6 No symbol table info available. #1 0x40596d8e in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 No symbol table info available. #2 0x40596d8e in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0 No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?) . Thread 1 (Thread 0x44540000 (LWP 1954)): #0 0x4007b494 in ?? () No symbol table info available. #1 0x403fa328 in ?? () No symbol table info available. #2 0x403fa328 in ?? () No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?)