Assertion `len <= col->len || ((col->mtype) == 5 || (col->mtype) == 14) || (col->len == 0 && col->mtype == 1)' failed in rec_get_converted_size_comp_prefix_low

The problem was found when RQG testing with table_stress.yy on builds compiled with debug.

10.3 d4144c8e010b61a440d422d0f1ca5b066532d173 2019-01-21

10.4 382115b99297ceaa4c3067f79efb5c2515013be5  2019-01-21

An actual 10.2 does not show that problem.

Version: '10.3.13-MariaDB-debug-log'  socket: 'bld_debug/mysql-test/var/tmp/mysqld.1.sock'  port: 16000  Source distribution

mysqld: storage/innobase/rem/rem0rec.cc:1131: ulint rec_get_converted_size_comp_prefix_low(const dict_index_t*, const dfield_t*, ulint, ulint*, rec_comp_status_t, bool): Assertion `len <= col->len || ((col->mtype) == 5 || (col->mtype) == 14) || (col->len == 0 && col->mtype == 1)' failed.

190122 11:15:55 [ERROR] mysqld got signal 6 ;

...

Query (0x7f7cf8012db0): ROLLBACK /* E_R Thread1 QNO 122 CON_ID 15 */

Connection ID (thread ID): 10

Status: NOT_KILLED

...

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

#5  0x00007f7d586e0f5d in __GI_abort () at abort.c:90

#6  0x00007f7d586d6f17 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x555c1bc96d18 "len <= col->len || ((col->mtype) == 5 || (col->mtype) == 14) || (col->len == 0 && col->mtype == 1)", file=file@entry=0x555c1bc96220 "storage/innobase/rem/rem0rec.cc", line=line@entry=1131, function=function@entry=0x555c1bc987e0 <rec_get_converted_size_comp_prefix_low(dict_index_t const*, dfield_t const*, unsigned long, unsigned long*, rec_comp_status_t, bool)::__PRETTY_FUNCTION__> "ulint rec_get_converted_size_comp_prefix_low(const dict_index_t*, const dfield_t*, ulint, ulint*, rec_comp_status_t, bool)") at assert.c:92

#7  0x00007f7d586d6fc2 in __GI___assert_fail (assertion=0x555c1bc96d18 "len <= col->len || ((col->mtype) == 5 || (col->mtype) == 14) || (col->len == 0 && col->mtype == 1)", file=0x555c1bc96220 "storage/innobase/rem/rem0rec.cc", line=1131, function=0x555c1bc987e0 <rec_get_converted_size_comp_prefix_low(dict_index_t const*, dfield_t const*, unsigned long, unsigned long*, rec_comp_status_t, bool)::__PRETTY_FUNCTION__> "ulint rec_get_converted_size_comp_prefix_low(const dict_index_t*, const dfield_t*, ulint, ulint*, rec_comp_status_t, bool)") at assert.c:101

#8  0x0000555c1b508645 in rec_get_converted_size_comp_prefix_low (index=0x7f7cec03b148, fields=0x7f7cf802e170, n_fields=3, extra=0x7f7d519cdc60, status=REC_STATUS_ORDINARY, temp=true) at storage/innobase/rem/rem0rec.cc:1131

#9  0x0000555c1b50a2f7 in rec_get_converted_size_temp (index=0x7f7cec03b148, fields=0x7f7cf802e170, n_fields=3, extra=0x7f7d519cdc60, status=REC_STATUS_ORDINARY) at storage/innobase/rem/rem0rec.cc:1676

#10 0x0000555c1b564e01 in row_log_table_delete (rec=0x7f7d523040b4 "", index=0x7f7cec02e528, offsets=0x7f7cf8036fe8, sys=0x0) at storage/innobase/row/row0log.cc:742

#11 0x0000555c1b7a2ce8 in row_undo_ins_remove_clust_rec (node=0x7f7cf8036118) at storage/innobase/row/row0uins.cc:120

#12 0x0000555c1b7a4449 in row_undo_ins (node=0x7f7cf8036118, thr=0x7f7cf80206b8) at storage/innobase/row/row0uins.cc:612

#13 0x0000555c1b5a6b96 in row_undo (node=0x7f7cf8036118, thr=0x7f7cf80206b8) at storage/innobase/row/row0undo.cc:301

#14 0x0000555c1b5a6df8 in row_undo_step (thr=0x7f7cf80206b8) at storage/innobase/row/row0undo.cc:360

#15 0x0000555c1b4fa8c7 in que_thr_step (thr=0x7f7cf80206b8) at storage/innobase/que/que0que.cc:1040

#16 0x0000555c1b4fab1b in que_run_threads_low (thr=0x7f7cf80206b8) at storage/innobase/que/que0que.cc:1104

#17 0x0000555c1b4fad0d in que_run_threads (thr=0x7f7cf80206b8) at storage/innobase/que/que0que.cc:1144

#18 0x0000555c1b605ef0 in trx_rollback_to_savepoint_low (trx=0x7f7d525111c8, savept=0x0) at storage/innobase/trx/trx0roll.cc:141

#19 0x0000555c1b6062e0 in trx_rollback_for_mysql_low (trx=0x7f7d525111c8) at storage/innobase/trx/trx0roll.cc:210

#20 0x0000555c1b606633 in trx_rollback_for_mysql (trx=0x7f7d525111c8) at storage/innobase/trx/trx0roll.cc:236

#21 0x0000555c1b3f0760 in innobase_rollback (hton=0x555c1e8aff48, thd=0x7f7cf8000ce8, rollback_trx=true) at storage/innobase/handler/ha_innodb.cc:4720

#22 0x0000555c1b1e6171 in ha_rollback_trans (thd=0x7f7cf8000ce8, all=true) at sql/handler.cc:1722

#23 0x0000555c1b062840 in trans_rollback (thd=0x7f7cf8000ce8) at sql/transaction.cc:423

#24 0x0000555c1aef525a in mysql_execute_command (thd=0x7f7cf8000ce8) at sql/sql_parse.cc:5832

#25 0x0000555c1aefbee7 in mysql_parse (thd=0x7f7cf8000ce8, rawbuf=0x7f7cf8012db0 "ROLLBACK /* E_R Thread1 QNO 122 CON_ID 15 */", length=44, parser_state=0x7f7d519cf5e0, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:8092

#26 0x0000555c1aee8dec in dispatch_command (command=COM_QUERY, thd=0x7f7cf8000ce8, packet=0x7f7cf800aa99 "ROLLBACK /* E_R Thread1 QNO 122 CON_ID 15 */ ", packet_length=45, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:1850

#27 0x0000555c1aee784d in do_command (thd=0x7f7cf8000ce8) at sql/sql_parse.cc:1395

#28 0x0000555c1b04e5f8 in do_handle_one_connection (connect=0x555c1eb7f798) at sql/sql_connect.cc:1402

#29 0x0000555c1b04e36f in handle_one_connection (arg=0x555c1eb7f798) at sql/sql_connect.cc:1308

#30 0x0000555c1b92d173 in pfs_spawn_thread (arg=0x555c1eb03478) at storage/perfschema/pfs.cc:1862

#31 0x00007f7d593827fc in start_thread (arg=0x7f7d519d0700) at pthread_create.c:465

#32 0x00007f7d587bcb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

The corresponding assert in 10.4 is

mysqld: storage/innobase/rem/rem0rec.cc:1200: ulint rec_get_converted_size_comp_prefix_low(const dict_index_t*, const dfield_t*, ulint, ulint*, rec_comp_status_t, bool) [with bool mblob = false; ulint = long unsigned int]: Assertion `len <= field->col->len || ((field->col->mtype) == 5 || (field->col->mtype) == 14) || (field->col->len == 0 && field->col->mtype == 1)' failed.