Details
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Bug
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Status: Confirmed (View Workflow)
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Critical
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Resolution: Unresolved
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10.3(EOL), 10.4(EOL), 10.5, 10.6, 10.7(EOL), 10.8(EOL), 10.9(EOL), 10.10(EOL), 10.11
Description
FOR rec IN cur (2) DO SELECT * a; |
SHUTDOWN;
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2022-01-26 18:48:19 0 [Note] /test/MD190122-mariadb-10.8.0-linux-x86_64-dbg/bin/mysqld: Shutdown complete
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Warning: Memory not freed: 280
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Warning: 280 bytes lost at 0x15520001f630, allocated by T@0 at 0x55e20e710fe3, mysys/array.c:72, mysys/hash.c:98, sql/sp.cc:2330, sql/sp.cc:2645, sql/item_create.cc:2622, sql/item_create.cc:2471, sql/sql_yacc.yy:10468
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Memory lost: 280 bytes in 1 chunks
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Warning: 280 bytes lost at 0x15520001f630, allocated by T@0 at sql/sql_parse.cc:10379, mysys/array.c:72, mysys/hash.c:98, sql/sp.cc:2330, sql/sp.cc:2645, sql/item_create.cc:2622, sql/item_create.cc:2471, sql/sql_yacc.yy:10468
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Memory lost: 280 bytes in 1 chunks
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10.8.0 e222e44d1bfc995870430bb90d8ac97e91f66cb4 (Optimized) |
2022-01-26 18:52:17 0 [Note] /test/MD190122-mariadb-10.8.0-linux-x86_64-opt/bin/mysqld: Shutdown complete
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Warning: Memory not freed: 280
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10.3.33 97425f740faf83ac2d16585084476470f3f898ce (Optimized) |
2022-01-26 18:50:30 0 [Note] /test/MD190122-mariadb-10.3.33-linux-x86_64-opt/bin/mysqld: Shutdown complete
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Warning: Memory not freed: 264
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10.3.33 97425f740faf83ac2d16585084476470f3f898ce (Debug) |
2022-01-26 18:50:29 0 [Note] /test/MD190122-mariadb-10.3.33-linux-x86_64-dbg/bin/mysqld: Shutdown complete
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Warning: Memory not freed: 256
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Warning: 256 bytes lost at 0x14e3c4020020, allocated by T@0 at mysys/array.c:70, mysys/hash.c:98, sql/sp.cc:2290, sql/sp.cc:2605, sql/item_create.cc:3512, sql/item_create.cc:3361, sql/sql_yacc.yy:11201, sql/sql_parse.cc:10199
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Memory lost: 256 bytes in 1 chunks
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Warning: 256 bytes lost at 0x14e3c4020020, allocated by T@0 at mysys/array.c:70, mysys/hash.c:98, sql/sp.cc:2290, sql/sp.cc:2605, sql/item_create.cc:3512, sql/item_create.cc:3361, sql/sql_yacc.yy:11201, sql/sql_parse.cc:10199
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Memory lost: 256 bytes in 1 chunks
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Attachments
Issue Links
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Activity
This testcase variation
FOR rec IN cur (0) DO SELECT * cur; |
SET GLOBAL session_track_system_variables='a'; |
SHUTDOWN;
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Leads to:
Warning: Memory not freed: 312
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In all versions from 10.5 to 10.11, both debug and optimized. Possibly a split/additional issue.
LSAN is now picking this up as a memory leak:
FOR rec IN cur (0) DO SELECT * cur; |
SHUTDOWN;
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CS 11.2.6 66b8d32b7514f46b1467d404d3f9ad688bbfeb4f (Debug, UBASAN) |
2024-11-01 8:40:33 0 [Note] /test/UBASAN_MD171024-mariadb-11.2.6-linux-x86_64-dbg/bin/mariadbd: Shutdown complete
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Warning: Memory not freed: 280
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=================================================================
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==315613==ERROR: LeakSanitizer: detected memory leaks
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Direct leak of 280 byte(s) in 1 object(s) allocated from:
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#0 0x562787c25a67 in malloc (/test/UBASAN_MD171024-mariadb-11.2.6-linux-x86_64-dbg/bin/mariadbd+0x88b4a67)
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#1 0x56278ca90ca3 in my_malloc /test/11.2_dbg_san/mysys/my_malloc.c:93
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#2 0x56278ca1cca2 in init_dynamic_array2 /test/11.2_dbg_san/mysys/array.c:73
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#3 0x56278ca2d4c1 in my_hash_init2 /test/11.2_dbg_san/mysys/hash.c:99
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#4 0x56278ae66999 in sp_add_used_routine(Query_tables_list*, Query_arena*, MDL_key const*, Sp_handler const*, TABLE_LIST*) /test/11.2_dbg_san/sql/sp.cc:2387
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#5 0x56278ae6b0d1 in Sp_handler::add_used_routine(Query_tables_list*, Query_arena*, Database_qualified_name const*) const /test/11.2_dbg_san/sql/sp.cc:2701
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#6 0x56278a31850f in Create_sp_func::create_with_db(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, bool, List<Item>*) /test/11.2_dbg_san/sql/item_create.cc:2993
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#7 0x56278a2b4673 in Create_qfunc::create_func(THD*, st_mysql_const_lex_string const*, List<Item>*) /test/11.2_dbg_san/sql/item_create.cc:2840
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#8 0x5627899918fe in MYSQLparse(THD*) /test/11.2_dbg_san/sql/sql_yacc.yy:10594
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#9 0x5627885cbd38 in parse_sql(THD*, Parser_state*, Object_creation_ctx*, bool) /test/11.2_dbg_san/sql/sql_parse.cc:10329
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#10 0x5627885cd90f in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/11.2_dbg_san/sql/sql_parse.cc:7890
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#11 0x5627885de29b in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/11.2_dbg_san/sql/sql_parse.cc:1894
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#12 0x5627885ecb06 in do_command(THD*, bool) /test/11.2_dbg_san/sql/sql_parse.cc:1407
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#13 0x562789014791 in do_handle_one_connection(CONNECT*, bool) /test/11.2_dbg_san/sql/sql_connect.cc:1439
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#14 0x562789015cb3 in handle_one_connection /test/11.2_dbg_san/sql/sql_connect.cc:1341
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#15 0x14ca3389ca93 in start_thread nptl/pthread_create.c:447
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And running this accross versions produces multiple stacks (one per line):
LSAN|memory leak|mysys/my_malloc.c|__interceptor_malloc|my_malloc|init_dynamic_array2|my_hash_init2
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LSAN|memory leak|mysys/my_malloc.c|malloc|my_malloc|init_dynamic_array2|my_hash_init2
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LSAN|memory leak|mysys/my_malloc.c|malloc|my_malloc|init_dynamic_array2|sp_add_used_routine
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The last one is interesting as it is the same stack as seen in MDEV-34405
Up to 10.11
10.11.0 bc563f1a4b0b38de3b41fd0f0d3d8b7f1aacbd8b (Debug)
2022-08-27 14:17:48 0 [Note] /test/MD190822-mariadb-10.11.0-linux-x86_64-dbg/bin/mysqld: Shutdown completeWarning: Memory not freed: 280Warning: 280 bytes lost at 0x1464f801f4a0, allocated by T@0 at 0x561d327d5c03, 0x561d327d9aec, 0x561d32264afa, 0x561d322653dd, mysys/array.c:72, mysys/hash.c:102, sql/sp.cc:2328, sql/sp.cc:2643Memory lost: 280 bytes in 1 chunksWarning: 280 bytes lost at 0x1464f801f4a0, allocated by T@0 at sql/item_create.cc:2719, sql/item_create.cc:2565, sql/sql_yacc.yy:10480, sql/sql_parse.cc:10426, mysys/array.c:72, mysys/hash.c:102, sql/sp.cc:2328, sql/sp.cc:2643Memory lost: 280 bytes in 1 chunks