Thread 12 "one_connection" hit Breakpoint 2, 0x000055555935b880 in __ubsan::ScopedReport::~ScopedReport() ()

(gdb) bt

#0  0x000055555935b880 in __ubsan::ScopedReport::~ScopedReport() ()

#1  0x00005555593604cb in handlePointerOverflowImpl(__ubsan::PointerOverflowData*, unsigned long, unsigned long, __ubsan::ReportOptions) ()

#2  0x0000555559360044 in __ubsan_handle_pointer_overflow ()

#3  0x000055555d8c66ad in my_uca_scanner_next_utf8mb4 (scanner=0x7bffde533920, param=0x7bffde533970) at /source/strings/ctype-uca-scanner_next.inl:84

#4  0x000055555d881b81 in my_uca_hash_sort_utf8mb4 (cs=0x7e0ff61f9cb0, s=0x0, slen=0, nr1=0x7bffde4b38a0, nr2=0x7bffde4b38c0) at /source/strings/ctype-uca.inl:643

#5  0x000055555bcb6e2a in my_ci_hash_sort (ci=0x7e0ff61f9cb0, key=0x0, len=0, nr1=0x7bffde4b38a0, nr2=0x7bffde4b38c0) at /source/include/m_ctype.h:1440

#6  0x000055555bcb6b8e in _ma_unique_hash (def=0x7e0ff631c048, record=0x7ecff6619c40 "\376") at /source/storage/maria/ma_unique.c:149

#7  0x000055555bfd7f1f in maria_write (info=0x7e8ff6406288, record=0x7ecff6619c40 "\376") at /source/storage/maria/ma_write.c:134

#8  0x000055555bce5866 in ha_maria::write_row (this=0x7ecff66193e0, buf=0x7ecff6619c40 "\376") at /source/storage/maria/ha_maria.cc:1235

#9  0x000055555998d2da in handler::ha_write_tmp_row (this=0x7ecff66193e0, buf=0x7ecff6619c40 "\376") at /source/sql/sql_class.h:8044

#10 0x0000555559f5d792 in end_write (join=0x7ecff65b5ca8, join_tab=0x7ecff65b78d0, end_of_records=false) at /source/sql/sql_select.cc:25813

#11 0x0000555559fa9f11 in AGGR_OP::put_record (this=0x7ecff65b87d0, end_of_records=false) at /source/sql/sql_select.cc:33247

#12 0x000055555a00ecd5 in AGGR_OP::put_record (this=0x7ecff65b87d0) at /source/sql/sql_select.h:1191

#13 0x0000555559e70915 in sub_select_postjoin_aggr (join=0x7ecff65b5ca8, join_tab=0x7ecff65b78d0, end_of_records=false) at /source/sql/sql_select.cc:23874

#14 0x0000555559f655e9 in evaluate_join_record (join=0x7ecff65b5ca8, join_tab=0x7ecff65b7458, error=0) at /source/sql/sql_select.cc:24423

#15 0x0000555559db9dd1 in sub_select (join=0x7ecff65b5ca8, join_tab=0x7ecff65b7458, end_of_records=false) at /source/sql/sql_select.cc:24227

#16 0x0000555559e91c65 in do_select (join=0x7ecff65b5ca8, procedure=0x0) at /source/sql/sql_select.cc:23701

#17 0x0000555559e8ccd3 in JOIN::exec_inner (this=0x7ecff65b5ca8) at /source/sql/sql_select.cc:5059

#18 0x0000555559e87f8e in JOIN::exec (this=0x7ecff65b5ca8) at /source/sql/sql_select.cc:4842

#19 0x0000555559dbd594 in mysql_select (thd=0x7eaff635a288, tables=0x7ecff65b4bd0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, 

    select_options=2164525825, result=0x7ecff65b5c78, unit=0x7eaff635e5b0, select_lex=0x7ecff65b4548) at /source/sql/sql_select.cc:5375

#20 0x0000555559dbae84 in handle_select (thd=0x7eaff635a288, lex=0x7eaff635e4d0, result=0x7ecff65b5c78, setup_tables_done_option=0) at /source/sql/sql_select.cc:633

#21 0x0000555559bf00b8 in execute_sqlcom_select (thd=0x7eaff635a288, all_tables=0x7ecff65b4bd0) at /source/sql/sql_parse.cc:6191

#22 0x0000555559bbd8b4 in mysql_execute_command (thd=0x7eaff635a288, is_called_from_prepared_stmt=false) at /source/sql/sql_parse.cc:3979

#23 0x0000555559b8e585 in mysql_parse (thd=0x7eaff635a288, rawbuf=0x7ecff65b44a8 "select distinct t from t1", length=25, parser_state=0x7bffdea297b0) at /source/sql/sql_parse.cc:7915

#24 0x0000555559b7d076 in dispatch_command (command=COM_QUERY, thd=0x7eaff635a288, packet=0x7e8ff6320289 "", packet_length=25, blocking=true) at /source/sql/sql_parse.cc:1902

#25 0x0000555559b93854 in do_command (thd=0x7eaff635a288, blocking=true) at /source/sql/sql_parse.cc:1415

#26 0x000055555a5a4cb4 in do_handle_one_connection (connect=0x7d0ff6209248, put_in_cache=true) at /source/sql/sql_connect.cc:1415

#27 0x000055555a5a3ff7 in handle_one_connection (arg=0x7d0ff6209248) at /source/sql/sql_connect.cc:1327

#28 0x000055555931b5d7 in asan_thread_start(void*) ()

#29 0x00007ffff742d1c4 in ?? () from /lib/x86_64-linux-gnu/libc.so.6

#30 0x00007ffff74ad85c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

(gdb) up

#1  0x00005555593604cb in handlePointerOverflowImpl(__ubsan::PointerOverflowData*, unsigned long, unsigned long, __ubsan::ReportOptions) ()

(gdb) up

#2  0x0000555559360044 in __ubsan_handle_pointer_overflow ()

(gdb) up

#3  0x000055555d8c66ad in my_uca_scanner_next_utf8mb4 (scanner=0x7bffde533920, param=0x7bffde533970) at /source/strings/ctype-uca-scanner_next.inl:84

84	    if (scanner->sbeg + 1 < scanner->send)

(gdb) list

79	    int mblen;

80	    my_wc_t currwc= 0;

81	    const uint16 *cweight;

82	

83	#if MY_UCA_ASCII_OPTIMIZE && !defined(SCANNER_NEXT_NCHARS)

84	    if (scanner->sbeg + 1 < scanner->send)

85	    {

86	      const MY_UCA_2BYTES_ITEM *ww;

87	      ww= my_uca_level_booster_2bytes_item_addr_const(param->level->booster,

88	                                                      scanner->sbeg[0],

(gdb) p scanner

$1 = (my_uca_scanner *) 0x7bffde533920

(gdb) p *scanner

$2 = {wbeg = 0x55555e8999c0 <nochar>, sbeg = 0x0, send = 0x0, implicit = {16559, 22986}, page = 21845, code = 1506520939}

(gdb)  up

#4  0x000055555d881b81 in my_uca_hash_sort_utf8mb4 (cs=0x7e0ff61f9cb0, s=0x0, slen=0, nr1=0x7bffde4b38a0, nr2=0x7bffde4b38c0) at /source/strings/ctype-uca.inl:643

643	  while ((s_res= MY_FUNCTION_NAME(scanner_next)(&scanner, &param)) >0)

(gdb) info locals

s_res = 32223

scanner = {wbeg = 0x55555e8999c0 <nochar>, sbeg = 0x0, send = 0x0, implicit = {16559, 22986}, page = 21845, code = 1506520939}

param = {level = 0x555562886a90 <my_uca1400_info_tailored+8944>, cs = 0x7e0ff61f9cb0}

space_weight = 521

m1 = 0

m2 = 4

(gdb) up

#5  0x000055555bcb6e2a in my_ci_hash_sort (ci=0x7e0ff61f9cb0, key=0x0, len=0, nr1=0x7bffde4b38a0, nr2=0x7bffde4b38c0) at /source/include/m_ctype.h:1440

1440	  (ci->coll->hash_sort)(ci, key, len, nr1, nr2);

(gdb) up

#6  0x000055555bcb6b8e in _ma_unique_hash (def=0x7e0ff631c048, record=0x7ecff6619c40 "\376") at /source/storage/maria/ma_unique.c:149

149	      my_ci_hash_sort(keyseg->charset,

(gdb) list

144	    }

145	    end= pos+length;

146	    if (type == HA_KEYTYPE_TEXT || type == HA_KEYTYPE_VARTEXT1 ||

147	        type == HA_KEYTYPE_VARTEXT2)

148	    {

149	      my_ci_hash_sort(keyseg->charset,

150	                      (const uchar*) pos, length,

151	                      &seed1, &seed2);

152	      crc+= seed1;

153	    }

(gdb) info locals

type = HA_KEYTYPE_VARTEXT2

length = 0

pos = 0x0

end = 0x0

crc = 0

seed1 = 0

seed2 = 4

keyseg = 0x7e0ff631c0a8

(gdb) p *keyseg

$3 = {charset = 0x7e0ff61f9cb0, start = 1, null_pos = 0, bit_pos = 0, flag = 32, length = 0, language = 2304, type = 17 '\021', null_bit = 1 '\001', bit_start = 2 '\002', 

  bit_length = 0 '\000'}