LinuxQuestions.org - Reading a core dump file c linux

Hi,

as i am not a pro in programming c in linux i wanna know how to read a core dump file.
i tried to use gdb. here the result:

(no debugging symbols found)
using host libthread_db library "/lib/tls/libthread_db.so.1".
core was generated by <my software>
program terminated with signal 11, segementation fault.
#0 0xb7b151eb in ?? ()

always nice to get a reply with question marks:D
what can i do to get a better result from gdb?
i guess 0xb7b... is the memory and ?? should be the called function?!

this is my second post here, the first help was really great and fast, hope this time it's the same:)

thx in advance
benni