The important part of the backtrace is at the beginning. The procedure asks for more in case the problem is complex.
Support for 1.6.0.x has ceased, so you will need to move to at least 1.6.2.x to get official support.
Signal 11 IS segmentation fault.
gdb and the program cannot run at the same time. If you use simple breakpoints, that is not a problem, but if you try to single step or use conditional breakpoints/watchpoints, you can expect performance to collapse.
Are you sure that you built with DONT_OPTIMIZE and that you have not stripped the symbol tables from the executable and modules? You’ve either got major memory corruption or you are not using a debuggable build.