May  8 15:27:56 yugs mysqld: 08:27:56 UTC - mysqld got signal 11 ;
May  8 15:27:56 yugs mysqld: This could be because you hit a bug. It is also possible that this binary
May  8 15:27:56 yugs mysqld: or one of the libraries it was linked against is corrupt, improperly built,
May  8 15:27:56 yugs mysqld: or misconfigured. This error can also be caused by malfunctioning hardware.
May  8 15:27:56 yugs mysqld: We will try our best to scrape up some info that will hopefully help
May  8 15:27:56 yugs mysqld: diagnose the problem, but since we have already crashed,
May  8 15:27:56 yugs mysqld: something is definitely wrong and this may fail.
May  8 15:27:56 yugs mysqld:
May  8 15:27:56 yugs mysqld: key_buffer_size=16777216
May  8 15:27:56 yugs mysqld: read_buffer_size=131072
May  8 15:27:56 yugs mysqld: max_used_connections=1
May  8 15:27:56 yugs mysqld: max_threads=151
May  8 15:27:56 yugs mysqld: thread_count=1
May  8 15:27:56 yugs mysqld: connection_count=1
May  8 15:27:56 yugs mysqld: It is possible that mysqld could use up to
May  8 15:27:56 yugs mysqld: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 346521 K  bytes of memory
May  8 15:27:56 yugs mysqld: Hope that's ok; if not, decrease some variables in the equation.
May  8 15:27:56 yugs mysqld:
May  8 15:27:56 yugs mysqld: Thread pointer: 0x7f4a06393b00
May  8 15:27:56 yugs mysqld: Attempting backtrace. You can use the following information to find out
May  8 15:27:56 yugs mysqld: where mysqld died. If you see no messages after this, something went
May  8 15:27:56 yugs mysqld: terribly wrong...
May  8 15:27:56 yugs mysqld: stack_bottom = 41c9b0f0 thread_stack 0x30000
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x7f4a058435f9]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(handle_fatal_signal+0x483) [0x7f4a05640c93]
May  8 15:27:56 yugs mysqld: /lib/libpthread.so.0 [0x7f4a04d96a80]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(rec_get_offsets_func+0x44) [0x7f4a0577df54]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(btr_estimate_number_of_different_key_vals+0x579) [0x7f4a056feb09]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(dict_update_statistics_low+0x7a) [0x7f4a0571df7a]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(dict_table_get+0x114) [0x7f4a0571e1b4]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x13b) [0x7f4a056f1a7b]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3d) [0x7f4a0563392d]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x5b7) [0x7f4a055954a7]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld [0x7f4a05586509]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x77a) [0x7f4a0558a9aa]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x4f3) [0x7f4a0558d053]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(open_and_lock_tables_derived(THD*, TABLE_LIST*, bool)+0x40) [0x7f4a0558d510]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld [0x7f4a05652af7]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(mysql_repair_table(THD*, TABLE_LIST*, st_ha_check_opt*)+0x65) [0x7f4a05653cf5]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(mysql_execute_command(THD*)+0x3079) [0x7f4a0554c6c9]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(mysql_parse(THD*, char*, unsigned int, char const**)+0x2eb) [0x7f4a0555146b]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xdc9) [0x7f4a05552259]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(do_command(THD*)+0xea) [0x7f4a05552f0a]
May  8 15:27:56 yugs mysqld: /usr/sbin/mysqld(handle_one_connection+0x236) [0x7f4a05542866]
May  8 15:27:56 yugs mysqld: /lib/libpthread.so.0 [0x7f4a04d8efc7]
May  8 15:27:56 yugs mysqld: /lib/libc.so.6(clone+0x6d) [0x7f4a038ea64d]
May  8 15:27:56 yugs mysqld:
May  8 15:27:56 yugs mysqld: Trying to get some variables.
May  8 15:27:56 yugs mysqld: Some pointers may be invalid and cause the dump to abort.
May  8 15:27:56 yugs mysqld: Query (7f4a063efb80): REPAIR TABLE `cms_permissions`
May  8 15:27:56 yugs mysqld: Connection ID (thread ID): 1
May  8 15:27:56 yugs mysqld: Status: NOT_KILLED
May  8 15:27:56 yugs mysqld:
May  8 15:27:56 yugs mysqld: The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
May  8 15:27:56 yugs mysqld: information that should help you find out what is causing the crash.
May  8 15:27:56 yugs mysqld_safe: Number of processes running now: 0
May  8 15:27:56 yugs mysqld_safe: mysqld restarted
May  8 15:27:56 yugs mysqld: 120508 15:27:56 [Note] Plugin 'FEDERATED' is disabled.
May  8 15:27:56 yugs mysqld: 120508 15:27:56  InnoDB: Initializing buffer pool, size = 8.0M
May  8 15:27:56 yugs mysqld: 120508 15:27:56  InnoDB: Completed initialization of buffer pool
May  8 15:27:57 yugs mysqld: 120508 15:27:57  InnoDB: Started; log sequence number 1 1228306090
May  8 15:27:57 yugs mysqld: 120508 15:27:57 [ERROR] Column count of mysql.db is wrong. Expected 22, found 20. Created with MySQL 50051, now running 50162. Please use mysql_upgrade to fix this error.
May  8 15:27:57 yugs mysqld: 120508 15:27:57 [ERROR] mysql.user has no `Event_priv` column at position 29
May  8 15:27:57 yugs mysqld: 120508 15:27:57 [ERROR] Event Scheduler: An error occurred when initializing system tables. Disabling the Event Scheduler.
May  8 15:27:57 yugs mysqld: 120508 15:27:57 [Note] /usr/sbin/mysqld: ready for connections.