miguel@hegel:~$ dbs/6.0/libexec/mysqld InnoDB: The first specified data file ./ibdata1 did not exist: InnoDB: a new database to be created! 090507 12:12:22 InnoDB: Setting file ./ibdata1 size to 10 MB InnoDB: Database physically writes the file full: wait... 090507 12:12:23 InnoDB: Log file ./ib_logfile0 did not exist: new to be created InnoDB: Setting log file ./ib_logfile0 size to 5 MB InnoDB: Database physically writes the file full: wait... 090507 12:12:23 InnoDB: Log file ./ib_logfile1 did not exist: new to be created InnoDB: Setting log file ./ib_logfile1 size to 5 MB InnoDB: Database physically writes the file full: wait... InnoDB: Doublewrite buffer not found: creating new InnoDB: Doublewrite buffer created InnoDB: Creating foreign key constraint system tables InnoDB: Foreign key constraint system tables created 090507 12:12:24 InnoDB: Started; log sequence number 0 0 090507 12:12:24 [Note] Event Scheduler: Loaded 0 events 090507 12:12:24 [Note] dbs/6.0/libexec/mysqld: ready for connections. Version: '6.0.12-alpha-debug' socket: '/tmp/mysql.sock' port: 3306 Source distribution mysqld: sql_error.cc:358: void Diagnostics_area::set_ok_status(THD*, ulonglong, ulonglong, const char*): Assertion `! is_set()' failed. 090507 12:16:12 - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=8384512 read_buffer_size=131072 max_used_connections=2 max_threads=151 thread_count=2 connection_count=2 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 338446 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x4e35718 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... stack_bottom = 0x7f650f4210f0 thread_stack 0x40000 dbs/6.0/libexec/mysqld(my_print_stacktrace+0x32) [0xdf4120] dbs/6.0/libexec/mysqld(handle_segfault+0x2a6) [0x770e34] /lib/libpthread.so.0 [0x7f650ec6c080] /lib/libc.so.6(gsignal+0x35) [0x7f650db1ffb5] /lib/libc.so.6(abort+0x183) [0x7f650db21bc3] /lib/libc.so.6(__assert_fail+0xe9) [0x7f650db18f09] dbs/6.0/libexec/mysqld(Diagnostics_area::set_ok_status(THD*, unsigned long long, unsigned long long, char const*)+0x5a) [0x8425cc] dbs/6.0/libexec/mysqld(my_ok(THD*, unsigned long long, unsigned long long, char const*)+0x3b) [0x683020] dbs/6.0/libexec/mysqld(mysql_execute_command(THD*)+0x7303) [0x78ac2b] dbs/6.0/libexec/mysqld(Prepared_statement::execute(String*, bool)+0x510) [0x83bef2] dbs/6.0/libexec/mysqld(Prepared_statement::execute_loop(String*, bool, unsigned char*, unsigned char*)+0xf6) [0x83fe68] dbs/6.0/libexec/mysqld(mysql_stmt_execute(THD*, char*, unsigned int)+0x221) [0x84031f] dbs/6.0/libexec/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x8e8) [0x78d0bd] dbs/6.0/libexec/mysqld(do_command(THD*)+0x22b) [0x78e7c1] dbs/6.0/libexec/mysqld(handle_one_connection+0x11c) [0x77ad99] /lib/libpthread.so.0 [0x7f650ec643ba] /lib/libc.so.6(clone+0x6d) [0x7f650dbd2fcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x4e2bb78 = CALL p() thd->thread_id=7 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. miguel@hegel:~$