Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... Cannot determine thread, fp=0x58692bbc, backtrace may not be correct. Stack range sanity check OK, backtrace follows: 0x81bf330 0xbed888 0x1b9eff4 0x81b0ce8 0x81bef36 0x81d2d95 0xbe7371 0xb409be New value of fp=(nil) failed sanity check, terminating stack trace! Please read http://dev.mysql.com/doc/mysql/en/Using_stack_trace.html and follow instructions on how to resolve the stack trace. Res$ stack trace is much more helpful in diagnosing the problem, so please do resolve it Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at (nil) is invalid pointer thd->thread_id=2658 The manual page at http://www.mysql.com/doc/en/Crashing.html contains information that should help you find out what is causing the crash.