170201 17:29:39  InnoDB: Assertion failure in thread 140462023636736 in file btr0pcur.c line 257

InnoDB: We intentionally generate a memory trap.

InnoDB: Submit a detailed bug report to http://bugs.mysql.com.

InnoDB: If you get repeated assertion failures or crashes, even

InnoDB: immediately after the mysqld startup, there may be

InnoDB: corruption in the InnoDB tablespace. Please refer to

InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html

InnoDB: about forcing recovery.

170201 17:29:39 [ERROR] 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.

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: 5.5.30-MariaDB-log

key_buffer_size=262144

read_buffer_size=8388608

max_used_connections=98

max_threads=202

thread_count=63

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2485267 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0xda2c160

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 = 0x7fbfdd05edb8 thread_stack 0x48000

??:0(my_print_stacktrace)[0xa7f34e]

??:0(handle_fatal_signal)[0x6cb4ab]

??:0(??)[0x7fc1473bf130]

??:0(??)[0x7fc145b735c9]

??:0(??)[0x7fc145b74cd8]

??:0(btr_pcur_restore_position_func)[0x8af10c]

??:0(sel_restore_position_for_mysql.clone.0)[0x85ff06]

??:0(row_search_for_mysql)[0x86056b]

??:0(ha_innobase::general_fetch(unsigned char*, unsigned int, unsigned int))[0x834ade]

??:0(handler::read_range_next())[0x6cf3d1]

??:0(Mrr_simple_index_reader::get_next(void**))[0x673085]

??:0(Mrr_ordered_rndpos_reader::refill_from_index_reader())[0x6733bc]

??:0(Mrr_ordered_rndpos_reader::refill_buffer(bool))[0x6734df]

??:0(DsMrr_impl::dsmrr_init(handler*, st_range_seq_if*, void*, unsigned int, unsigned int, st_handler_buffer*))[0x67243d]

??:0(ha_innobase::multi_range_read_init(st_range_seq_if*, void*, unsigned int, unsigned int, st_handler_buffer*))[0x82fb0a]

??:0(QUICK_RANGE_SELECT::reset())[0x7aab2a]

??:0(join_init_read_record(st_join_table*))[0x5c3255]

??:0(sub_select(JOIN*, st_join_table*, bool))[0x5af169]

??:0(do_select(JOIN*, List<Item>*, TABLE*, Procedure*))[0x5b666d]

??:0(JOIN::exec())[0x5d6032]

??:0(subselect_single_select_engine::exec())[0x753325]

??:0(Item_subselect::exec())[0x750daa]

??:0(Item_singlerow_subselect::val_real())[0x75116e]

??:0(Item_cache_real::cache_value())[0x6d8a7f]

??:0(Item_cache_wrapper::cache())[0x6f1803]

??:0(Item_cache_wrapper::val_decimal(my_decimal*))[0x6e6106]

??:0(Arg_comparator::compare_decimal())[0x6fbae8]

??:0(Item_func_eq::val_int())[0x6feaf2]

??:0(Item::val_bool())[0x6d996c]

??:0(Item_cond_and::val_int())[0x6f914a]

??:0(evaluate_join_record(JOIN*, st_join_table*, int))[0x5aa03e]

??:0(sub_select(JOIN*, st_join_table*, bool))[0x5af223]

??:0(do_select(JOIN*, List<Item>*, TABLE*, Procedure*))[0x5b666d]

??:0(JOIN::exec())[0x5d6032]

??:0(subselect_single_select_engine::exec())[0x753325]

??:0(Item_subselect::exec())[0x750daa]

??:0(Item_singlerow_subselect::val_str(String*))[0x751258]

??:0(Item_cache_str::cache_value())[0x6e24cf]

??:0(Item_cache_wrapper::save_val(Field*))[0x6e58b9]

??:0(copy_funcs(Item**, THD const*))[0x5a62aa]

??:0(end_update(JOIN*, st_join_table*, bool))[0x5cccdb]

??:0(evaluate_join_record(JOIN*, st_join_table*, int))[0x5a9faf]

??:0(sub_select(JOIN*, st_join_table*, bool))[0x5af184]

??:0(JOIN_CACHE::generate_full_extensions(unsigned char*))[0x66b91d]

??:0(JOIN_CACHE::join_matching_records(bool))[0x66bdbc]

??:0(JOIN_CACHE::join_records(bool))[0x668c28]

??:0(evaluate_join_record(JOIN*, st_join_table*, int))[0x5a9faf]

??:0(sub_select(JOIN*, st_join_table*, bool))[0x5af223]

??:0(do_select(JOIN*, List<Item>*, TABLE*, Procedure*))[0x5b666d]

??:0(JOIN::exec())[0x5d61f2]

??:0(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x5d7fd8]

??:0(handle_select(THD*, LEX*, select_result*, unsigned long))[0x5d8c73]

??:0(execute_sqlcom_select(THD*, TABLE_LIST*))[0x58423c]

??:0(mysql_execute_command(THD*))[0x58a97e]

??:0(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x58d699]

??:0(dispatch_command(enum_server_command, THD*, char*, unsigned int))[0x58eaf6]

??:0(do_handle_one_connection(THD*))[0x64571f]

??:0(handle_one_connection)[0x6457bc]

??:0(??)[0x7fc1473b7df3]

??:0(??)[0x7fc145c341bd]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7fbf58000e08): is an invalid pointer

Connection ID (thread ID): 92640957

Status: KILL_CONNECTION

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=on,mrr_cost_based=off,mrr_sort_keys=on,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=off