150808 10:05:19 [ERROR] 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. To report this bug, see http://kb.askmonty.org/en/reporting-bugs 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. Server version: 10.0.21-MariaDB key_buffer_size=134217728 read_buffer_size=131072 max_used_connections=1 max_threads=153 thread_count=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467003 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0x7f9ae8ff5008 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 = 0x7f9b04da4d80 thread_stack 0x48000 /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0xbcccfe] /usr/sbin/mysqld(handle_fatal_signal+0x390)[0x737a60] /lib64/libpthread.so.0(+0xf130)[0x7f9b049f0130] /lib64/libc.so.6(+0x96255)[0x7f9b03206255] /usr/lib64/mysql/plugin/ha_connect.so(_ZN6TYPVALIPcE13SetValue_charES0_i+0x3a)[0x7f9ae998565a] /usr/lib64/mysql/plugin/ha_connect.so(_ZN7ODBConn10GetCatInfoEP10tagCATPARM+0x79f)[0x7f9ae99a57cf] /usr/lib64/mysql/plugin/ha_connect.so(_Z11ODBCColumnsP7_globalPcS1_S1_S1_ibP10odbc_parms+0x193)[0x7f9ae99a64f3] /usr/lib64/mysql/plugin/ha_connect.so(+0x7d2ab)[0x7f9ae99292ab] /usr/sbin/mysqld[0x655a32] /usr/sbin/mysqld(_Z26mysql_create_table_no_lockP3THDPKcS2_P14HA_CREATE_INFOP10Alter_infoPbi+0xf0)[0x656910] /usr/sbin/mysqld(_Z18mysql_create_tableP3THDP10TABLE_LISTP14HA_CREATE_INFOP10Alter_info+0x11d)[0x656b4d] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x69cd)[0x5d73fd] /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x1f9)[0x5d8939] /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x17f5)[0x5da6b5] /usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x22b)[0x6a05bb] /usr/sbin/mysqld(handle_one_connection+0x39)[0x6a0679] /lib64/libpthread.so.0(+0x7df5)[0x7f9b049e8df5] /lib64/libc.so.6(clone+0x6d)[0x7f9b032661ad] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7f9ad9421020): is an invalid pointer Connection ID (thread ID): 2 Status: NOT_KILLED Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on 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. 150808 10:05:19 mysqld_safe Number of processes running now: 0 150808 10:05:19 mysqld_safe mysqld restarted 150808 10:05:19 [Note] /usr/sbin/mysqld (mysqld 10.0.21-MariaDB) starting as process 3743 ... 150808 10:05:19 [Note] InnoDB: Using mutexes to ref count buffer pool pages 150808 10:05:19 [Note] InnoDB: The InnoDB memory heap is disabled 150808 10:05:19 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 150808 10:05:19 [Note] InnoDB: Memory barrier is not used 150808 10:05:19 [Note] InnoDB: Compressed tables use zlib 1.2.7 150808 10:05:19 [Note] InnoDB: Using Linux native AIO 150808 10:05:19 [Note] InnoDB: Using CPU crc32 instructions 150808 10:05:19 [Note] InnoDB: Initializing buffer pool, size = 128.0M 150808 10:05:19 [Note] InnoDB: Completed initialization of buffer pool 150808 10:05:19 [Note] InnoDB: Highest supported file format is Barracuda. 150808 10:05:19 [Note] InnoDB: The log sequence numbers 1616857 and 1616857 in ibdata files do not match the log sequence number 1616913 in the ib_logfiles! 150808 10:05:19 [Note] InnoDB: Database was not shutdown normally! 150808 10:05:19 [Note] InnoDB: Starting crash recovery. 150808 10:05:19 [Note] InnoDB: Reading tablespace information from the .ibd files... 150808 10:05:19 [Note] InnoDB: Restoring possible half-written data pages 150808 10:05:19 [Note] InnoDB: from the doublewrite buffer... 150808 10:05:19 [Note] InnoDB: 128 rollback segment(s) are active. 150808 10:05:19 [Note] InnoDB: Waiting for purge to start 150808 10:05:19 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.25-73.1 started; log sequence number 1616913 150808 10:05:19 [Note] Plugin 'FEEDBACK' is disabled. 150808 10:05:19 [Note] CONNECT: Version 1.03.0007 July 05, 2015 150808 10:05:19 [Note] Server socket created on IP: '::'. 150808 10:05:19 [Note] Event Scheduler: Loaded 0 events 150808 10:05:19 [Note] /usr/sbin/mysqld: ready for connections. Version: '10.0.21-MariaDB' socket: '/var/lib/mysql/mysql.sock' port: 3306 MariaDB Server