Server crashed (Segmentation fault)

Hello! My server crashing nearly 3 times per day.
Аll I got from core dumps is ‘bad’ memory addreses.



Cannot access memory at address 0xb7778908
Cannot access memory at address 0xb7778904
...
Cannot access memory at address 0xb77c8908
Cannot access memory at address 0xb77c8904
...
Cannot access memory at address 0xb7782908
Cannot access memory at address 0xb7782904
...
Cannot access memory at address 0xb7707908
Cannot access memory at address 0xb7707904
...
Cannot access memory at address 0xb7789908
Cannot access memory at address 0xb7789904


Last numbers always the same, how it can help me to determine problem?