Valgrind Bus Error

Question

I generate a makefile using qmake and then pass the following arguments to valgrind

valgrind --tool=memcheck --leak-check=yes filename inputfilename

where filename is the name of the executable generated and inputfilename is the name of the input file required as input for the executable

Instead of getting any output related to the program i get Bus Error as the output .

Please can anyone tell me what is this an indication of ?

Thanks