Type:
Priority:
Resolution:
Fixed
Affects Version/s:
10.6 , 10.11 , 11.0(EOL) , 11.1(EOL) , 11.2(EOL) , 11.3(EOL) , 11.4
The following failure is reported by MemorySanitizer on our CI systems every now and then, and I can reproduce it locally as well:
10.6 73291de74e49a84700ce4e2aa2c7ec6769d884dc
innodb_gis.rtree_compress '16k,innodb' w1 [ 3 fail ]
Test ended at 2024-04-08 17:14:37
CURRENT_TEST: innodb_gis.rtree_compress
mysqltest: At line 43: query 'rollback' failed: <Unknown> (2013): Lost connection to server during query
...
==932423==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x5641413d732e in rtr_pcur_getnext_from_path(dtuple_t const*, page_cur_mode_t, btr_cur_t*, unsigned long, unsigned long, bool, mtr_t*) /mariadb/10.6/storage/innobase/gis/gis0sea.cc:292:3
#1 0x5641413c817e in rtr_search(dtuple_t const*, btr_latch_mode, btr_pcur_t*, mtr_t*) /mariadb/10.6/storage/innobase/gis/gis0sea.cc:1087:8
#2 0x5641418bbc90 in row_undo_ins_remove_sec_low(btr_latch_mode, dict_index_t*, dtuple_t*, que_thr_t*) /mariadb/10.6/storage/innobase/row/row0uins.cc:283:7
#3 0x5641418b6c14 in row_undo_ins_remove_sec(dict_index_t*, dtuple_t*, que_thr_t*) /mariadb/10.6/storage/innobase/row/row0uins.cc:353:8
#4 0x5641418b6c14 in row_undo_ins_remove_sec_rec(undo_node_t*, que_thr_t*) /mariadb/10.6/storage/innobase/row/row0uins.cc:547:10
#5 0x5641418b6c14 in row_undo_ins(undo_node_t*, que_thr_t*) /mariadb/10.6/storage/innobase/row/row0uins.cc:599:9
#6 0x5641418b3429 in row_undo(undo_node_t*, que_thr_t*) /mariadb/10.6/storage/innobase/row/row0undo.cc:399:5
#7 0x5641418b3429 in row_undo_step(que_thr_t*) /mariadb/10.6/storage/innobase/row/row0undo.cc:440:8
#8 0x5641417021fe in que_thr_step(que_thr_t*) /mariadb/10.6/storage/innobase/que/que0que.cc:586:9
#9 0x5641417021fe in que_run_threads_low(que_thr_t*) /mariadb/10.6/storage/innobase/que/que0que.cc:644:25
#10 0x5641417021fe in que_run_threads(que_thr_t*) /mariadb/10.6/storage/innobase/que/que0que.cc:664:2
#11 0x564141988b70 in trx_t::rollback_low(trx_savept_t*) /mariadb/10.6/storage/innobase/trx/trx0roll.cc:125:5
#12 0x564141982dcd in trx_rollback_for_mysql_low(trx_t*) /mariadb/10.6/storage/innobase/trx/trx0roll.cc:196:7
#13 0x564141982dcd in trx_rollback_for_mysql(trx_t*) /mariadb/10.6/storage/innobase/trx/trx0roll.cc
#14 0x5641410d3d85 in innobase_rollback(handlerton*, THD*, bool) /mariadb/10.6/storage/innobase/handler/ha_innodb.cc:4697:11
#15 0x56413f9c4faf in ha_rollback_trans(THD*, bool) /mariadb/10.6/sql/handler.cc:2237:17
#16 0x5641408bdfae in trans_rollback(THD*) /mariadb/10.6/sql/transaction.cc:387:8
#17 0x5641403aed19 in mysql_execute_command(THD*, bool) /mariadb/10.6/sql/sql_parse.cc:5777:27
#18 0x564140395f52 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /mariadb/10.6/sql/sql_parse.cc:8139:18
#19 0x56414038e690 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /mariadb/10.6/sql/sql_parse.cc:1896:7
#20 0x564140397014 in do_command(THD*, bool) /mariadb/10.6/sql/sql_parse.cc:1409:17
#21 0x56414087e4f5 in do_handle_one_connection(CONNECT*, bool) /mariadb/10.6/sql/sql_connect.cc:1415:11
#22 0x56414087df65 in handle_one_connection /mariadb/10.6/sql/sql_connect.cc:1317:5
#23 0x564140e72c40 in pfs_spawn_thread /mariadb/10.6/storage/perfschema/pfs.cc:2201:3
#24 0x7f586a6a645b in start_thread nptl/pthread_create.c:444:8
#25 0x7f586a726bbb in clone3 misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
Uninitialized value was stored to memory at
#0 0x5641413d7327 in page_is_leaf(unsigned char const*) /mariadb/10.6/storage/innobase/include/page0page.h:263:10
#1 0x5641413d7327 in rtr_pcur_getnext_from_path(dtuple_t const*, page_cur_mode_t, btr_cur_t*, unsigned long, unsigned long, bool, mtr_t*) /mariadb/10.6/storage/innobase/gis/gis0sea.cc:292:3
Memory was marked as uninitialized
#0 0x56413f8dc971 in __msan_allocated_memory (/dev/shm/10.6msan/sql/mariadbd+0xfd9971) (BuildId: 963d974e3992c2b5)
#1 0x5641412af2fa in buf_LRU_block_free_non_file_page(buf_block_t*) /mariadb/10.6/storage/innobase/buf/buf0lru.cc:975:2
A possible reason why earlier versions are not affected could be that MDEV-23484
The problem seems to be inadequate locking in rtr_pcur_getnext_from_path() . I have a patch that passes the following execution on my local system (see MDEV-20377
LD_LIBRARY_PATH=~ /libmsan-18 MSAN_SYMBOLIZER_PATH=~ /bin/llvm-symbolizer-msan . /mtr --parallel=auto --repeat=10 innodb_gis.rtree_compress{,,,,,,,,,,}
10.6 73291de74e49a84700ce4e2aa2c7ec6769d884dc with patch
innodb_gis.rtree_compress '4k,innodb' w14 [ 10 pass ] 17794
innodb_gis.rtree_compress '4k,innodb' w17 [ 10 pass ] 17397
--------------------------------------------------------------------------
The servers were restarted 0 times
Spent 8710.576 of 305 seconds executing testcases
Completed: All 330 tests were successful.
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Bug
Critical
MDEV-33073 always green buildbot