100716 13:03:54 - mysqld got signal 11 ; 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=67108864 read_buffer_size=131072 max_used_connections=1 max_threads=151 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 395647 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x7f17ad263000 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 = 0x7f1792419e58 thread_stack 0x30000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x7f17abd63c29] /usr/sbin/mysqld(handle_segfault+0x404) [0x7f17aba714f4] /lib/libpthread.so.0(+0xf8f0) [0x7f17ab2e18f0] /usr/sbin/mysqld(setup_fields(THD*, Item**, List&, enum_mark_columns, List*, bool)+0x28) [0x7f17ababae88] /usr/sbin/mysqld(JOIN::prepare(Item***, TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*)+0x244) [0x7f17abae1584] /usr/sbin/mysqld(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*)+0x7e5) [0x7f17abaee515] /usr/sbin/mysqld(handle_select(THD*, st_lex*, select_result*, unsigned long)+0x174) [0x7f17abaf3774] /usr/sbin/mysqld(+0x36d66a) [0x7f17aba7f66a] /usr/sbin/mysqld(mysql_execute_command(THD*)+0x526) [0x7f17aba83476] /usr/sbin/mysqld(mysql_parse(THD*, char const*, unsigned int, char const**)+0x35f) [0x7f17aba8892f] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xd69) [0x7f17aba896a9] /usr/sbin/mysqld(do_command(THD*)+0xea) [0x7f17aba8a28a] /usr/sbin/mysqld(handle_one_connection+0x23d) [0x7f17aba7c2bd] /lib/libpthread.so.0(+0x69ca) [0x7f17ab2d89ca] /lib/libc.so.6(clone+0x6d) [0x7f17a9e0e6fd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x7f17ad2bb560 = select @@version_comment limit 1 thd->thread_id=2 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. 100716 13:03:54 [Note] Plugin 'FEDERATED' is disabled. 100716 13:03:55 InnoDB: Started; log sequence number 0 1905311 100716 13:03:55 [Note] Event Scheduler: Loaded 0 events 100716 13:03:55 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.41-3ubuntu12.3' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) --- 100716 13:27:00 - mysqld got signal 11 ; 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=67108864 read_buffer_size=131072 max_used_connections=1 max_threads=151 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 395647 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x7f91b4b3f000 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 = 0x7f91995d0e58 thread_stack 0x30000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x7f91b2f1ac29] /usr/sbin/mysqld(handle_segfault+0x404) [0x7f91b2c284f4] /lib/libpthread.so.0(+0xf8f0) [0x7f91b24988f0] /usr/sbin/mysqld(MYSQLparse(void*)+0x9408) [0x7f91b2c5de28] /usr/sbin/mysqld(mysql_parse(THD*, char const*, unsigned int, char const**)+0x217) [0x7f91b2c3f7e7] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xd69) [0x7f91b2c406a9] /usr/sbin/mysqld(do_command(THD*)+0xea) [0x7f91b2c4128a] /usr/sbin/mysqld(handle_one_connection+0x23d) [0x7f91b2c332bd] /lib/libpthread.so.0(+0x69ca) [0x7f91b248f9ca] /lib/libc.so.6(clone+0x6d) [0x7f91b0fc56fd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x7f91b4bc90a0 = select count(*) into @discard from `information_schema`.`COLUMNS` thd->thread_id=5 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. 100716 13:27:00 [Note] Plugin 'FEDERATED' is disabled. 100716 13:27:00 InnoDB: Started; log sequence number 0 1905311 100716 13:27:00 [Note] Event Scheduler: Loaded 0 events 100716 13:27:00 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.41-3ubuntu12.3' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu)