Excuting a stored procedure with a cursor with a certain combination of columns craches mysqld

create procedure nah_foo()

modifies sql data

-- type: log

begin

  declare l_done  boolean default false;

  declare l_text  varchar(255);

  declare l_count int;

  declare c_cursor cursor

  for

  select concat_ws(' ','hello','world') as hello_world

  ,      count(1)                       as count_1

  from   information_schema.TABLES

  ;

  declare continue handler for sqlstate '02000' set l_done = true;

  open c_cursor;

  loop1: loop

    fetch c_cursor

    into  l_text

    ,     l_count

    ;

    if (l_done) then

      close c_cursor;

      leave loop1;

    end if;

  end loop;

end

call nah_foo();

ERROR 2013 (HY000): Lost connection to MySQL server during query

170719  2:42:19 [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 https://mariadb.com/kb/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: 10.2.6-MariaDB-log

key_buffer_size=33554432

read_buffer_size=131072

max_used_connections=1

max_threads=52

thread_count=7

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 146994 K  bytes of memory

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

Thread pointer: 0x7fd400000a88

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 = 0x7fd40cd21d70 thread_stack 0x49000

/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x7fd426518c9e]

/usr/sbin/mysqld(handle_fatal_signal+0x30d)[0x7fd425f6793d]

/lib64/libpthread.so.0(+0xf370)[0x7fd4254d6370]

/usr/sbin/mysqld(_ZN19Materialized_cursor24send_result_set_metadataEP3THDR4ListI4ItemE+0xb9)[0x7fd4260a49e9]

/usr/sbin/mysqld(_ZN18Select_materialize24send_result_set_metadataER4ListI4ItemEj+0xe3)[0x7fd4260a4b73]

mysys/stacktrace.c:268(my_print_stacktrace)[0x7fd425e302e9]

sql/sql_select.cc:17930(JOIN::exec_inner())[0x7fd425e30c83]

sql/sql_select.cc:3668(mysql_select(THD*, 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*))[0x7fd425e30dda]

sql/sql_select.cc:373(handle_select(THD*, LEX*, select_result*, unsigned long))[0x7fd425e3191c]

sql/sql_parse.cc:6432(execute_sqlcom_select(THD*, TABLE_LIST*))[0x7fd425dd5586]

sql/sql_parse.cc:3448(mysql_execute_command(THD*))[0x7fd425de1807]

sql/sql_cursor.cc:142(mysql_open_cursor(THD*, select_result*, Server_side_cursor**))[0x7fd4260a4547]

sql/sp_rcontext.cc:459(sp_cursor::open(THD*))[0x7fd426096d3e]

sql/sp_head.cc:3832(sp_instr_copen::exec_core(THD*, unsigned int*))[0x7fd42608c677]

sql/sp_head.cc:2997(sp_lex_keeper::reset_lex_and_exec_core(THD*, unsigned int*, bool, sp_instr*))[0x7fd426092649]

sql/sp_head.cc:3818(sp_instr_copen::execute(THD*, unsigned int*))[0x7fd4260929d8]

sql/sp_head.cc:1325(sp_head::execute(THD*, bool))[0x7fd42608f4ee]

sql/sp_head.cc:2112(sp_head::execute_procedure(THD*, List<Item>*))[0x7fd426090c3f]

sql/sql_parse.cc:2883(do_execute_sp(THD*, sp_head*))[0x7fd425dd4f36]

sql/sql_parse.cc:5797(mysql_execute_command(THD*))[0x7fd425dddf42]

sql/sql_parse.cc:7875(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x7fd425de4dee]

sql/sql_parse.cc:1812(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x7fd425de7c2f]

sql/sql_parse.cc:1364(do_command(THD*))[0x7fd425de87d1]

sql/sql_connect.cc:1354(do_handle_one_connection(CONNECT*))[0x7fd425ea883a]

sql/sql_connect.cc:1262(handle_one_connection)[0x7fd425ea895d]

/lib64/libpthread.so.0(+0x7dc5)[0x7fd4254cedc5]

/lib64/libc.so.6(clone+0x6d)[0x7fd423b2176d]

Trying to get some variables.

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

Query (0x7fd400011100): call nah_foo()

Connection ID (thread ID): 23

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,orderby_uses_equalities=on,condition_pushdown_for_derived=on