141202 4:00:04 [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: 10.0.13-MariaDB-wsrep-log key_buffer_size=2097152 read_buffer_size=2097152 max_used_connections=357 max_threads=514 thread_count=108 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2118249 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0x7f08e8f6a008 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 = 0x7f065385bce0 thread_stack 0x48000 /usr/sbin/mysqld(my_print_stacktrace+0x2b)[0xb9541b] /usr/sbin/mysqld(handle_fatal_signal+0x398)[0x744b48] /lib64/libpthread.so.0[0x379e80f710] /usr/sbin/mysqld[0x94bc7e] /usr/sbin/mysqld[0x8a25b7] /usr/sbin/mysqld(_ZN7handler13ha_index_prevEPh+0x10c)[0x74999c] /usr/sbin/mysqld[0xb701f3] /usr/sbin/mysqld(_ZN7handler13ha_index_prevEPh+0x10c)[0x74999c] /usr/sbin/mysqld(_ZN17QUICK_SELECT_DESC8get_nextEv+0x5c)[0x81aa1c] /usr/sbin/mysqld[0x8331d8] /usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x1b2)[0x602232] /usr/sbin/mysqld[0x61931d] /usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0xa3d)[0x62c18d] /usr/sbin/mysqld(_ZN4JOIN4execEv+0x11)[0x62e001] /usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x1dd)[0x62abcd] /usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x28d)[0x62e35d] /usr/sbin/mysqld[0x5d3329] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x543e)[0x5debee] /usr/sbin/mysqld[0x5e1752] /usr/sbin/mysqld[0x5e210b] /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x16d0)[0x5e3c30] /usr/sbin/mysqld(_Z10do_commandP3THD+0x132)[0x5e4402] /usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x54b)[0x6a31cb] /usr/sbin/mysqld(handle_one_connection+0x42)[0x6a32c2] /lib64/libpthread.so.0[0x379e8079d1] /lib64/libc.so.6(clone+0x6d)[0x379e4e886d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7f06e2ffd020): is an invalid pointer Connection ID (thread ID): 1753220 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. 141202 04:00:05 mysqld_safe Number of processes running now: 0 141202 04:00:05 mysqld_safe mysqld restarted -------------------------------------------------------------------------------------------------------