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  1. MariaDB Server
  2. MDEV-32094

Assertion `used_tables_cache == 0' failed in Item_func::fix_fields and Assertion `marked_for_read()' failed on INSERT

Details

    Description

      Does not look related to MDEV-25650, and different from MDEV-30730 as no Galera is involved here, and the assert is different.

      SET SESSION lc_time_names=zh_hk;
      CREATE TABLE t (c CHAR,cc TEXT AS (CONCAT (c,IF(c=c,DATE_FORMAT(c,''),'')))) ENGINE=InnoDB;
      SET NAMES utf8;
      INSERT INTO t VALUES (0,0);
      INSERT INTO t VALUES (0,0);
      INSERT INTO t VALUES (0,0);
      

      Leads to:

      11.3.0 7ba9c7fb84b5f28e4736656b57d9508b70ca6369 (Debug)

      ...
      11.3.0-dbg>INSERT INTO t VALUES (0,0);
      ERROR 1906 (HY000): The value specified for generated column 'cc' in table 't' has been ignored
      11.3.0-dbg>INSERT INTO t VALUES (0,0);
      ERROR 1267 (HY000): Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_general_ci,COERCIBLE) for operation 'concat'
      11.3.0-dbg>INSERT INTO t VALUES (0,0);
      ERROR 2013 (HY000): Lost connection to server during query
      

      11.3.0 7ba9c7fb84b5f28e4736656b57d9508b70ca6369 (Debug)

      mariadbd: /test/git-bisect/11.3_dbg/sql/item_func.cc:326: virtual bool Item_func::fix_fields(THD*, Item**): Assertion `used_tables_cache == 0' failed.
      

      11.3.0 7ba9c7fb84b5f28e4736656b57d9508b70ca6369 (Debug)

      Core was generated by `/test/MD020923-mariadb-11.3.0-linux-x86_64-dbg/bin/mariadbd --no-defaults --cor'.
      Program terminated with signal SIGABRT, Aborted.
      #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=22937018324544)
          at ./nptl/pthread_kill.c:44
      [Current thread is 1 (Thread 0x14dc70d45640 (LWP 3134337))]
      (gdb) bt
      #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=22937018324544) at ./nptl/pthread_kill.c:44
      #1  __pthread_kill_internal (signo=6, threadid=22937018324544) at ./nptl/pthread_kill.c:78
      #2  __GI___pthread_kill (threadid=22937018324544, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
      #3  0x000014dc8ea42476 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
      #4  0x000014dc8ea287f3 in __GI_abort () at ./stdlib/abort.c:79
      #5  0x000014dc8ea2871b in __assert_fail_base (fmt=0x14dc8ebdd150 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x5633f4ef434a "used_tables_cache == 0", file=0x5633f4ef4748 "/test/git-bisect/11.3_dbg/sql/item_func.cc", line=326, function=<optimized out>) at ./assert/assert.c:92
      #6  0x000014dc8ea39e96 in __GI___assert_fail (assertion=0x5633f4ef434a "used_tables_cache == 0", file=0x5633f4ef4748 "/test/git-bisect/11.3_dbg/sql/item_func.cc", line=326, function=0x5633f4ef5040 "virtual bool Item_func::fix_fields(THD*, Item**)") at ./assert/assert.c:101
      #7  0x00005633f457d83b in Item_func::fix_fields (this=this@entry=0x14dc200285d8, thd=thd@entry=0x14dc20000d58, ref=<optimized out>) at /test/git-bisect/11.3_dbg/sql/item_func.cc:326
      #8  0x00005633f45c3330 in Item_str_func::fix_fields (this=0x14dc200285d8, thd=0x14dc20000d58, ref=<optimized out>) at /test/git-bisect/11.3_dbg/sql/item_strfunc.cc:128
      #9  0x00005633f43218ff in Virtual_column_info::fix_expr (this=this@entry=0x14dc200286a8, thd=thd@entry=0x14dc20000d58) at /test/git-bisect/11.3_dbg/sql/table.cc:3725
      #10 0x00005633f4321a68 in Virtual_column_info::fix_session_expr (this=0x14dc200286a8, thd=thd@entry=0x14dc20000d58) at /test/git-bisect/11.3_dbg/sql/table.cc:3751
      #11 0x00005633f4321da2 in TABLE::vcol_fix_expr (this=<optimized out>, thd=thd@entry=0x14dc20000d58) at /test/git-bisect/11.3_dbg/sql/table.cc:3835
      #12 0x00005633f418dd6f in open_table (thd=thd@entry=0x14dc20000d58, table_list=table_list@entry=0x14dc20013380, ot_ctx=ot_ctx@entry=0x14dc70d43710) at /test/git-bisect/11.3_dbg/sql/sql_base.cc:2353
      #13 0x00005633f419200d in open_and_process_table (ot_ctx=0x14dc70d43710, has_prelocking_list=false, prelocking_strategy=0x14dc70d43900, flags=0, counter=0x14dc70d437ac, tables=0x14dc20013380, thd=0x14dc20000d58) at /test/git-bisect/11.3_dbg/sql/sql_base.cc:4148
      #14 open_tables (thd=thd@entry=0x14dc20000d58, options=@0x14dc200065e8: {m_options = DDL_options_st::OPT_NONE}, start=start@entry=0x14dc70d43798, counter=counter@entry=0x14dc70d437ac, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x14dc70d43900) at /test/git-bisect/11.3_dbg/sql/sql_base.cc:4633
      #15 0x00005633f4192e78 in open_and_lock_tables (thd=thd@entry=0x14dc20000d58, options=<optimized out>, tables=<optimized out>, tables@entry=0x14dc20013380, derived=derived@entry=true, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x14dc70d43900) at /test/git-bisect/11.3_dbg/sql/sql_base.cc:5607
      #16 0x00005633f41d0a4a in open_and_lock_tables (flags=0, derived=true, tables=0x14dc20013380, thd=0x14dc20000d58) at /test/git-bisect/11.3_dbg/sql/sql_base.h:525
      #17 mysql_insert (thd=thd@entry=0x14dc20000d58, table_list=0x14dc20013380, fields=@0x14dc20005fa0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5633f5755be0 <end_of_list>, last = 0x14dc20005fa0, elements = 0}, <No data fields>}, values_list=@0x14dc20005fe8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x14dc20014098, last = 0x14dc20014098, elements = 1}, <No data fields>}, update_fields=@0x14dc20005fd0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5633f5755be0 <end_of_list>, last = 0x14dc20005fd0, elements = 0}, <No data fields>}, update_values=@0x14dc20005fb8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5633f5755be0 <end_of_list>, last = 0x14dc20005fb8, elements = 0}, <No data fields>}, duplic=DUP_ERROR, ignore=false, result=0x0) at /test/git-bisect/11.3_dbg/sql/sql_insert.cc:767
      #18 0x00005633f420cc37 in mysql_execute_command (thd=thd@entry=0x14dc20000d58, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /test/git-bisect/11.3_dbg/sql/sql_parse.cc:4427
      #19 0x00005633f42123a8 in mysql_parse (thd=thd@entry=0x14dc20000d58, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14dc70d44200) at /test/git-bisect/11.3_dbg/sql/sql_parse.cc:7760
      #20 0x00005633f421453c in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14dc20000d58, packet=packet@entry=0x14dc2000af69 "INSERT INTO t VALUES (0,0)", packet_length=packet_length@entry=26, blocking=blocking@entry=true) at /test/git-bisect/11.3_dbg/sql/sql_class.h:247
      #21 0x00005633f4216417 in do_command (thd=0x14dc20000d58, blocking=blocking@entry=true) at /test/git-bisect/11.3_dbg/sql/sql_parse.cc:1406
      #22 0x00005633f436d2ae in do_handle_one_connection (connect=<optimized out>, connect@entry=0x5633f6d011d8, put_in_cache=put_in_cache@entry=true) at /test/git-bisect/11.3_dbg/sql/sql_connect.cc:1445
      #23 0x00005633f436d50d in handle_one_connection (arg=0x5633f6d011d8) at /test/git-bisect/11.3_dbg/sql/sql_connect.cc:1347
      #24 0x000014dc8ea94b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
      #25 0x000014dc8eb26a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
      

      Bug confirmed present in:
      MariaDB: 10.6.15 (dbg), 10.9.8 (dbg), 10.10.6 (dbg), 10.11.5 (dbg), 11.0.3 (dbg), 11.1.2 (dbg), 11.2.0 (dbg), 11.3.0 (dbg)

      Bug (or feature/syntax) confirmed not present in:
      MariaDB: 10.4.31 (dbg), 10.4.31 (opt), 10.5.22 (dbg), 10.5.22 (opt), 10.6.15 (opt), 10.9.8 (opt), 10.10.6 (opt), 10.11.5 (opt), 11.0.3 (opt), 11.1.2 (opt), 11.2.0 (opt), 11.3.0 (opt)
      MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.51 (dbg), 5.6.51 (opt), 5.7.40 (dbg), 8.0.33 (dbg), 8.0.33 (opt)

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            Roel Roel Van de Paar added a comment - - edited

            New testcase with different assertion, present in 11.7 and 11.8. Reproduces with MyISAM and InnoDB:

            SET NAMES utf8;
            CREATE TABLE t (c1 DATE NOT NULL,c2 TEXT AS (IF(c1=c1,DATE_FORMAT(c1,''),'')));
            SHOW CREATE TABLE t;
            INSERT INTO t (a) VALUES (1);
            

            Leads to:

            CS 11.8.0 ae998c22b2ce4f1023a6c9c2e925324e2c86c6a1 (Debug)

            mariadbd: /test/11.8_dbg/sql/field.cc:6993: virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const: Assertion `marked_for_read()' failed.
            

            CS 11.8.0 ae998c22b2ce4f1023a6c9c2e925324e2c86c6a1 (Debug)

            Core was generated by `/test/MD010125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-defaults --max'.
            Program terminated with signal SIGABRT, Aborted.
            Download failed: Invalid argument.  Continuing without source file ./nptl/./nptl/pthread_kill.c.
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
             
            [Current thread is 1 (LWP 1957023)]
            (gdb) bt
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #1  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #2  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89
            #3  0x00001552be24526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26
            #4  0x00001552be2288ff in __GI_abort () at ./stdlib/abort.c:79
            #5  0x00001552be22881b in __assert_fail_base (fmt=0x1552be3d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x5559a2eb1d02 "marked_for_read()", file=file@entry=0x5559a2eb17ec "/test/11.8_dbg/sql/field.cc", line=line@entry=6993, function=function@entry=0x5559a2eb3b07 "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:94
            #6  0x00001552be23b507 in __assert_fail (assertion=0x5559a2eb1d02 "marked_for_read()", file=0x5559a2eb17ec "/test/11.8_dbg/sql/field.cc", line=6993, function=0x5559a2eb3b07 "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:103
            #7  0x00005559a21404b2 in Field_newdate::get_TIME (this=0x15525c02a720, ltime=0x1552bd456a00, pos=0x15525c02a6d9 "", fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/field.cc:6993
            #8  0x00005559a215453d in Field_newdate::get_date (this=0x15525c02a720, ltime=0x1552bd456a00, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/field.h:3641
            #9  0x00005559a219bf94 in Item_field::get_date (this=0x15525c02bd20, thd=0x15525c000d58, ltime=0x1552bd456a00, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/item.cc:3483
            #10 0x00005559a22dc102 in Item_func_date_format::val_str (this=0x15525c02c130, str=0x1552bd456b20) at /test/11.8_dbg/sql/item_timefunc.cc:1914
            #11 0x00005559a21b69fc in Item_func_conv_charset::Item_func_conv_charset (this=0x15525c02c3f8, thd=0x15525c000d58, a=0x15525c02c130, cs=0x5559a5828118, cache_if_const=true)at /test/11.8_dbg/sql/item_strfunc.h:1929
            #12 0x00005559a2193379 in Item::safe_charset_converter (this=0x15525c02c130, thd=0x15525c000d58, tocs=0x5559a5828118) at /test/11.8_dbg/sql/item.cc:1308
            #13 0x00005559a2198a2f in Type_std_attributes::agg_item_set_converter (this=0x15525c02c298, coll=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, fname=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, args=0x15525c02aa88, nargs=2, flags=11, item_sep=1, single_err=0x0)at /test/11.8_dbg/sql/item.cc:2695
            #14 0x00005559a1bf35cf in Type_std_attributes::agg_arg_charsets (this=0x15525c02c298, c=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg/sql/sql_type.h:3416
            #15 0x00005559a1fcc51a in Type_std_attributes::agg_arg_charsets_for_string_result (this=0x15525c02c298, c=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2, item_sep=1)at /test/11.8_dbg/sql/sql_type.h:3431
            #16 0x00005559a2016d6d in Type_std_attributes::aggregate_attributes_string (this=0x15525c02c298, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2) at /test/11.8_dbg/sql/sql_type.cc:1367
            #17 0x00005559a202255b in Type_handler_string_result::Item_hybrid_func_fix_attributes (this=0x5559a3a79150 <type_handler_varchar>, thd=0x15525c000d58, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, handler=0x15525c02c340, func=0x15525c02c290, items=0x15525c02aa88, nitems=2) at /test/11.8_dbg/sql/sql_type.cc:4780
            #18 0x00005559a220e291 in Item_hybrid_func::fix_attributes (this=0x15525c02c290, items=0x15525c02aa88, nitems=2)at /test/11.8_dbg/sql/item_func.cc:685
            #19 0x00005559a21ea23a in Item_func_case_abbreviation2::fix_length_and_dec2 (this=0x15525c02c290, items=0x15525c02aa88)at /test/11.8_dbg/sql/item_cmpfunc.h:1185
            #20 0x00005559a21ea45e in Item_func_case_abbreviation2::fix_length_and_dec2_eliminate_null (this=0x15525c02c290, items=0x15525c02aa88)at /test/11.8_dbg/sql/item_cmpfunc.h:1212
            #21 0x00005559a21e41d1 in Item_func_if::fix_length_and_dec (this=0x15525c02c290, thd=0x15525c000d58)at /test/11.8_dbg/sql/item_cmpfunc.h:1331
            #22 0x00005559a220d213 in Item_func::fix_fields (this=0x15525c02c290, thd=0x15525c000d58, ref=0x15525c02c368)at /test/11.8_dbg/sql/item_func.cc:366
            #23 0x00005559a21cdbda in Item_func_if::fix_fields (this=0x15525c02c290, thd=0x15525c000d58, ref=0x15525c02c368)at /test/11.8_dbg/sql/item_cmpfunc.cc:2594
            #24 0x00005559a1ed32a7 in Virtual_column_info::fix_expr (this=0x15525c02c358, thd=0x15525c000d58) at /test/11.8_dbg/sql/table.cc:3787
            #25 0x00005559a1ed34a9 in Virtual_column_info::fix_session_expr (this=0x15525c02c358, thd=0x15525c000d58)at /test/11.8_dbg/sql/table.cc:3813
            #26 0x00005559a1ed391e in TABLE::vcol_fix_expr (this=0x15525c02a288, thd=0x15525c000d58) at /test/11.8_dbg/sql/table.cc:3897
            #27 0x00005559a1c8cef0 in open_table (thd=0x15525c000d58, table_list=0x15525c01ac68, ot_ctx=0x1552bd457be8)at /test/11.8_dbg/sql/sql_base.cc:2377
            #28 0x00005559a1c922fd in open_and_process_table (thd=0x15525c000d58, tables=0x15525c01ac68, counter=0x1552bd457c9c, flags=0, prelocking_strategy=0x1552bd457d00, has_prelocking_list=false, ot_ctx=0x1552bd457be8) at /test/11.8_dbg/sql/sql_base.cc:4177
            #29 0x00005559a1c90e44 in open_tables (thd=0x15525c000d58, options=@0x15525c006828: {m_options = DDL_options_st::OPT_NONE}, start=0x1552bd457cb0, counter=0x1552bd457c9c, flags=0, prelocking_strategy=0x1552bd457d00) at /test/11.8_dbg/sql/sql_base.cc:4663
            #30 0x00005559a1c941dd in open_and_lock_tables (thd=0x15525c000d58, options=@0x15525c006828: {m_options = DDL_options_st::OPT_NONE}, tables=0x15525c01ac68, derived=true, flags=0, prelocking_strategy=0x1552bd457d00) at /test/11.8_dbg/sql/sql_base.cc:5632
            #31 0x00005559a1ca359e in open_and_lock_tables (thd=0x15525c000d58, tables=0x15525c01ac68, derived=true, flags=0)at /test/11.8_dbg/sql/sql_base.h:532
            #32 0x00005559a1cee7f5 in mysql_insert (thd=0x15525c000d58, table_list=0x15525c01ac68, fields=@0x15525c0061d8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x15525c01b4b8, last = 0x15525c01b4b8, elements = 1}, <No data fields>}, values_list=@0x15525c006220: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x15525c01ba40, last = 0x15525c01ba40, elements = 1}, <No data fields>}, update_fields=@0x15525c006208: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5559a3a49de0 <end_of_list>, last = 0x15525c006208, elements = 0}, <No data fields>}, update_values=@0x15525c0061f0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5559a3a49de0 <end_of_list>, last = 0x15525c0061f0, elements = 0}, <No data fields>}, duplic=DUP_ERROR, ignore=false, result=0x0)at /test/11.8_dbg/sql/sql_insert.cc:784
            #33 0x00005559a1d4ed82 in mysql_execute_command (thd=0x15525c000d58, is_called_from_prepared_stmt=false) at /test/11.8_dbg/sql/sql_parse.cc:4471
            #34 0x00005559a1d447a0 in mysql_parse (thd=0x15525c000d58, rawbuf=0x15525c01ab80 "INSERT INTO t (a) VALUES (1)", length=28, parser_state=0x1552bd459980) at /test/11.8_dbg/sql/sql_parse.cc:7901
            #35 0x00005559a1d41af7 in dispatch_command (command=COM_QUERY, thd=0x15525c000d58, packet=0x15525c00b2a9 "INSERT INTO t (a) VALUES (1)", packet_length=28, blocking=true) at /test/11.8_dbg/sql/sql_parse.cc:1903
            #36 0x00005559a1d4542a in do_command (thd=0x15525c000d58, blocking=true)at /test/11.8_dbg/sql/sql_parse.cc:1416
            #37 0x00005559a1f316b9 in do_handle_one_connection (connect=0x5559a60ea138, put_in_cache=true) at /test/11.8_dbg/sql/sql_connect.cc:1415
            #38 0x00005559a1f31426 in handle_one_connection (arg=0x5559a61b10a8)at /test/11.8_dbg/sql/sql_connect.cc:1327
            #39 0x00005559a24f69cf in pfs_spawn_thread (arg=0x5559a61506d8)at /test/11.8_dbg/storage/perfschema/pfs.cc:2198
            #40 0x00001552be29ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
            #41 0x00001552be329c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
            

            Bug confirmed present in:
            MariaDB: 11.7.2 (dbg), 11.8.0 (dbg)

            Bug (or feature/syntax) confirmed not present in:
            MariaDB: 10.5.28 (dbg), 10.5.28 (opt), 10.6.21 (dbg), 10.6.21 (opt), 10.11.11 (dbg), 10.11.11 (opt), 11.4.5 (dbg), 11.4.5 (opt), 11.7.2 (opt), 11.8.0 (opt)
            MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.51 (dbg), 5.6.51 (opt), 5.7.44 (dbg), 5.7.44 (opt), 8.0.36 (dbg), 8.0.36 (opt), 9.1.0 (dbg), 9.1.0 (opt)

            Roel Roel Van de Paar added a comment - - edited New testcase with different assertion, present in 11.7 and 11.8. Reproduces with MyISAM and InnoDB: SET NAMES utf8; CREATE TABLE t (c1 DATE NOT NULL ,c2 TEXT AS ( IF (c1=c1,DATE_FORMAT(c1, '' ), '' ))); SHOW CREATE TABLE t; INSERT INTO t (a) VALUES (1); Leads to: CS 11.8.0 ae998c22b2ce4f1023a6c9c2e925324e2c86c6a1 (Debug) mariadbd: /test/11.8_dbg/sql/field.cc:6993: virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const: Assertion `marked_for_read()' failed. CS 11.8.0 ae998c22b2ce4f1023a6c9c2e925324e2c86c6a1 (Debug) Core was generated by `/test/MD010125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-defaults --max'. Program terminated with signal SIGABRT, Aborted. Download failed: Invalid argument. Continuing without source file ./nptl/./nptl/pthread_kill.c. #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44   [Current thread is 1 (LWP 1957023)] (gdb) bt #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #2 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89 #3 0x00001552be24526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26 #4 0x00001552be2288ff in __GI_abort () at ./stdlib/abort.c:79 #5 0x00001552be22881b in __assert_fail_base (fmt=0x1552be3d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x5559a2eb1d02 "marked_for_read()", file=file@entry=0x5559a2eb17ec "/test/11.8_dbg/sql/field.cc", line=line@entry=6993, function=function@entry=0x5559a2eb3b07 "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:94 #6 0x00001552be23b507 in __assert_fail (assertion=0x5559a2eb1d02 "marked_for_read()", file=0x5559a2eb17ec "/test/11.8_dbg/sql/field.cc", line=6993, function=0x5559a2eb3b07 "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:103 #7 0x00005559a21404b2 in Field_newdate::get_TIME (this=0x15525c02a720, ltime=0x1552bd456a00, pos=0x15525c02a6d9 "", fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/field.cc:6993 #8 0x00005559a215453d in Field_newdate::get_date (this=0x15525c02a720, ltime=0x1552bd456a00, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/field.h:3641 #9 0x00005559a219bf94 in Item_field::get_date (this=0x15525c02bd20, thd=0x15525c000d58, ltime=0x1552bd456a00, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg/sql/item.cc:3483 #10 0x00005559a22dc102 in Item_func_date_format::val_str (this=0x15525c02c130, str=0x1552bd456b20) at /test/11.8_dbg/sql/item_timefunc.cc:1914 #11 0x00005559a21b69fc in Item_func_conv_charset::Item_func_conv_charset (this=0x15525c02c3f8, thd=0x15525c000d58, a=0x15525c02c130, cs=0x5559a5828118, cache_if_const=true)at /test/11.8_dbg/sql/item_strfunc.h:1929 #12 0x00005559a2193379 in Item::safe_charset_converter (this=0x15525c02c130, thd=0x15525c000d58, tocs=0x5559a5828118) at /test/11.8_dbg/sql/item.cc:1308 #13 0x00005559a2198a2f in Type_std_attributes::agg_item_set_converter (this=0x15525c02c298, coll=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, fname=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, args=0x15525c02aa88, nargs=2, flags=11, item_sep=1, single_err=0x0)at /test/11.8_dbg/sql/item.cc:2695 #14 0x00005559a1bf35cf in Type_std_attributes::agg_arg_charsets (this=0x15525c02c298, c=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg/sql/sql_type.h:3416 #15 0x00005559a1fcc51a in Type_std_attributes::agg_arg_charsets_for_string_result (this=0x15525c02c298, c=@0x15525c02c2a0: {collation = 0x5559a5828118, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2, item_sep=1)at /test/11.8_dbg/sql/sql_type.h:3431 #16 0x00005559a2016d6d in Type_std_attributes::aggregate_attributes_string (this=0x15525c02c298, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, items=0x15525c02aa88, nitems=2) at /test/11.8_dbg/sql/sql_type.cc:1367 #17 0x00005559a202255b in Type_handler_string_result::Item_hybrid_func_fix_attributes (this=0x5559a3a79150 <type_handler_varchar>, thd=0x15525c000d58, func_name=@0x1552bd456e88: {str = 0x5559a2e90824 "if", length = 2}, handler=0x15525c02c340, func=0x15525c02c290, items=0x15525c02aa88, nitems=2) at /test/11.8_dbg/sql/sql_type.cc:4780 #18 0x00005559a220e291 in Item_hybrid_func::fix_attributes (this=0x15525c02c290, items=0x15525c02aa88, nitems=2)at /test/11.8_dbg/sql/item_func.cc:685 #19 0x00005559a21ea23a in Item_func_case_abbreviation2::fix_length_and_dec2 (this=0x15525c02c290, items=0x15525c02aa88)at /test/11.8_dbg/sql/item_cmpfunc.h:1185 #20 0x00005559a21ea45e in Item_func_case_abbreviation2::fix_length_and_dec2_eliminate_null (this=0x15525c02c290, items=0x15525c02aa88)at /test/11.8_dbg/sql/item_cmpfunc.h:1212 #21 0x00005559a21e41d1 in Item_func_if::fix_length_and_dec (this=0x15525c02c290, thd=0x15525c000d58)at /test/11.8_dbg/sql/item_cmpfunc.h:1331 #22 0x00005559a220d213 in Item_func::fix_fields (this=0x15525c02c290, thd=0x15525c000d58, ref=0x15525c02c368)at /test/11.8_dbg/sql/item_func.cc:366 #23 0x00005559a21cdbda in Item_func_if::fix_fields (this=0x15525c02c290, thd=0x15525c000d58, ref=0x15525c02c368)at /test/11.8_dbg/sql/item_cmpfunc.cc:2594 #24 0x00005559a1ed32a7 in Virtual_column_info::fix_expr (this=0x15525c02c358, thd=0x15525c000d58) at /test/11.8_dbg/sql/table.cc:3787 #25 0x00005559a1ed34a9 in Virtual_column_info::fix_session_expr (this=0x15525c02c358, thd=0x15525c000d58)at /test/11.8_dbg/sql/table.cc:3813 #26 0x00005559a1ed391e in TABLE::vcol_fix_expr (this=0x15525c02a288, thd=0x15525c000d58) at /test/11.8_dbg/sql/table.cc:3897 #27 0x00005559a1c8cef0 in open_table (thd=0x15525c000d58, table_list=0x15525c01ac68, ot_ctx=0x1552bd457be8)at /test/11.8_dbg/sql/sql_base.cc:2377 #28 0x00005559a1c922fd in open_and_process_table (thd=0x15525c000d58, tables=0x15525c01ac68, counter=0x1552bd457c9c, flags=0, prelocking_strategy=0x1552bd457d00, has_prelocking_list=false, ot_ctx=0x1552bd457be8) at /test/11.8_dbg/sql/sql_base.cc:4177 #29 0x00005559a1c90e44 in open_tables (thd=0x15525c000d58, options=@0x15525c006828: {m_options = DDL_options_st::OPT_NONE}, start=0x1552bd457cb0, counter=0x1552bd457c9c, flags=0, prelocking_strategy=0x1552bd457d00) at /test/11.8_dbg/sql/sql_base.cc:4663 #30 0x00005559a1c941dd in open_and_lock_tables (thd=0x15525c000d58, options=@0x15525c006828: {m_options = DDL_options_st::OPT_NONE}, tables=0x15525c01ac68, derived=true, flags=0, prelocking_strategy=0x1552bd457d00) at /test/11.8_dbg/sql/sql_base.cc:5632 #31 0x00005559a1ca359e in open_and_lock_tables (thd=0x15525c000d58, tables=0x15525c01ac68, derived=true, flags=0)at /test/11.8_dbg/sql/sql_base.h:532 #32 0x00005559a1cee7f5 in mysql_insert (thd=0x15525c000d58, table_list=0x15525c01ac68, fields=@0x15525c0061d8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x15525c01b4b8, last = 0x15525c01b4b8, elements = 1}, <No data fields>}, values_list=@0x15525c006220: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x15525c01ba40, last = 0x15525c01ba40, elements = 1}, <No data fields>}, update_fields=@0x15525c006208: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5559a3a49de0 <end_of_list>, last = 0x15525c006208, elements = 0}, <No data fields>}, update_values=@0x15525c0061f0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x5559a3a49de0 <end_of_list>, last = 0x15525c0061f0, elements = 0}, <No data fields>}, duplic=DUP_ERROR, ignore=false, result=0x0)at /test/11.8_dbg/sql/sql_insert.cc:784 #33 0x00005559a1d4ed82 in mysql_execute_command (thd=0x15525c000d58, is_called_from_prepared_stmt=false) at /test/11.8_dbg/sql/sql_parse.cc:4471 #34 0x00005559a1d447a0 in mysql_parse (thd=0x15525c000d58, rawbuf=0x15525c01ab80 "INSERT INTO t (a) VALUES (1)", length=28, parser_state=0x1552bd459980) at /test/11.8_dbg/sql/sql_parse.cc:7901 #35 0x00005559a1d41af7 in dispatch_command (command=COM_QUERY, thd=0x15525c000d58, packet=0x15525c00b2a9 "INSERT INTO t (a) VALUES (1)", packet_length=28, blocking=true) at /test/11.8_dbg/sql/sql_parse.cc:1903 #36 0x00005559a1d4542a in do_command (thd=0x15525c000d58, blocking=true)at /test/11.8_dbg/sql/sql_parse.cc:1416 #37 0x00005559a1f316b9 in do_handle_one_connection (connect=0x5559a60ea138, put_in_cache=true) at /test/11.8_dbg/sql/sql_connect.cc:1415 #38 0x00005559a1f31426 in handle_one_connection (arg=0x5559a61b10a8)at /test/11.8_dbg/sql/sql_connect.cc:1327 #39 0x00005559a24f69cf in pfs_spawn_thread (arg=0x5559a61506d8)at /test/11.8_dbg/storage/perfschema/pfs.cc:2198 #40 0x00001552be29ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447 #41 0x00001552be329c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78 Bug confirmed present in: MariaDB: 11.7.2 (dbg), 11.8.0 (dbg) Bug (or feature/syntax) confirmed not present in: MariaDB: 10.5.28 (dbg), 10.5.28 (opt), 10.6.21 (dbg), 10.6.21 (opt), 10.11.11 (dbg), 10.11.11 (opt), 11.4.5 (dbg), 11.4.5 (opt), 11.7.2 (opt), 11.8.0 (opt) MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.51 (dbg), 5.6.51 (opt), 5.7.44 (dbg), 5.7.44 (opt), 8.0.36 (dbg), 8.0.36 (opt), 9.1.0 (dbg), 9.1.0 (opt)
            Roel Roel Van de Paar added a comment - - edited

            bar Please have a look at if this ticket rings any bells. Thank you!

            Roel Roel Van de Paar added a comment - - edited bar Please have a look at if this ticket rings any bells. Thank you!
            Roel Roel Van de Paar added a comment - - edited

            Interestingly, the testcase from the last comment gives a somewhat different stack on UBSAN (Clang) builds (i.e. no Field_newdate::get_date frame):

            CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang)

            mariadbd: /test/11.8_dbg_san/sql/field.cc:6993: virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const: Assertion `marked_for_read()' failed.
            

            CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang)

            Core was generated by `/test/UBASAN_MD170125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-default'.
            Program terminated with signal SIGABRT, Aborted.
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
             
            [Current thread is 1 (LWP 2009637)]
            (gdb) bt
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #1  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #2  __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89
            #3  0x0000559f5453c7e5 in handle_fatal_signal (sig=<optimized out>)at /test/11.8_dbg_san/sql/signal_handler.cc:298
            #4  <signal handler called>
            #5  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #6  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #7  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89
            #8  0x000014d93f64526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26
            #9  0x000014d93f6288ff in __GI_abort () at ./stdlib/abort.c:79
            #10 0x000014d93f62881b in __assert_fail_base (fmt=0x14d93f7d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x559f56ab3e80 <str> "marked_for_read()", file=file@entry=0x559f56ab10f0 "/test/11.8_dbg_san/sql/field.cc", line=line@entry=6993, function=function@entry=0x559f56ab8040 <__PRETTY_FUNCTION__._ZNK13Field_newdate8get_TIMEEP13st_mysql_timePKh11date_mode_t> "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:94
            #11 0x000014d93f63b507 in __assert_fail (assertion=0x559f56ab3e80 <str> "marked_for_read()", file=0x559f56ab10f0 "/test/11.8_dbg_san/sql/field.cc", line=6993, function=0x559f56ab8040 <__PRETTY_FUNCTION__._ZNK13Field_newdate8get_TIMEEP13st_mysql_timePKh11date_mode_t> "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:103
            #12 0x0000559f54494d20 in Field_newdate::get_TIME (this=0x5250000b7208, ltime=0x14d90e3603e0, pos=0x5250000b71a9 "", fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg_san/sql/field.cc:6993
            #13 0x0000559f54603d8d in Item_field::get_date (this=<optimized out>, thd=<optimized out>, ltime=0x14d90e3603e0, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg_san/sql/item.cc:3483
            #14 0x0000559f54b01abe in Item_func_date_format::val_str (this=<optimized out>, str=<optimized out>)at /test/11.8_dbg_san/sql/item_timefunc.cc:1914
            #15 0x0000559f54690cb2 in Item_func_conv_charset::Item_func_conv_charset (this=0x5250000b8698, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.h:1931
            #16 0x0000559f545d8a06 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:1308
            #17 0x0000559f545f2a73 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:2695
            #18 0x0000559f540b23b5 in Type_std_attributes::agg_arg_charsets (this=0x5250000b84e8, c=@0x5250000b84f0: {collation = 0x52100000fc88, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3416
            #19 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x5250000b84e8, c=@0x5250000b84f0: {collation = 0x52100000fc88, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3431
            #20 Type_std_attributes::aggregate_attributes_string (this=0x5250000b84e8, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2) at /test/11.8_dbg_san/sql/sql_type.cc:1367
            #21 0x0000559f547e9351 in Item_hybrid_func::fix_attributes (this=0x5250000b84e0, items=<optimized out>, nitems=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:685
            #22 0x0000559f54783048 in Item_func_case_abbreviation2::fix_length_and_dec2 (this=<optimized out>, items=<optimized out>)at /test/11.8_dbg_san/sql/item_cmpfunc.h:1192
            #23 0x0000559f547838fe in Item_func_case_abbreviation2::fix_length_and_dec2_eliminate_null (this=0x5250000b84e0, items=0x5250000b85b8)at /test/11.8_dbg_san/sql/item_cmpfunc.h:1219
            #24 0x0000559f547e480e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:366
            #25 0x0000559f53c4938b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/11.8_dbg_san/sql/table.cc:3787
            #26 0x0000559f53c4ac92 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>) at /test/11.8_dbg_san/sql/table.cc:3897
            #27 0x0000559f5340f1a3 in open_table (thd=<optimized out>, table_list=0x52d0003c0558, ot_ctx=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:2377
            #28 0x0000559f5341e538 in open_and_process_table (thd=0x52b000165218, tables=0x52d0003c0558, counter=0x14d90df32bc0, flags=0, prelocking_strategy=0x14d90e35f820, ot_ctx=0x14d90e1dfaf0, has_prelocking_list=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4177
            #29 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x14d90df32ba0, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4663
            #30 0x0000559f53428dc5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:5632
            #31 0x0000559f5356dbaf in open_and_lock_tables (thd=0x52b000165218, tables=0x52d0003c0558, derived=true, flags=0)at /test/11.8_dbg_san/sql/sql_base.h:533
            #32 mysql_insert (thd=<optimized out>, table_list=0x52d0003c0558, fields=<optimized out>, values_list=<optimized out>, update_fields=<optimized out>, update_values=<optimized out>, duplic=<optimized out>, ignore=<optimized out>, result=<optimized out>)at /test/11.8_dbg_san/sql/sql_insert.cc:784
            #33 0x0000559f536fc5d4 in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/11.8_dbg_san/sql/sql_parse.cc:4485
            #34 0x0000559f536c6589 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x52d0003c0438 "INSERT INTO t (a) VALUES (1)", length=<optimized out>, parser_state=parser_state@entry=0x14d90e53f8a0)at /test/11.8_dbg_san/sql/sql_parse.cc:7915
            #35 0x0000559f536ba64c in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.8_dbg_san/sql/sql_parse.cc:1903
            #36 0x0000559f536c8fae in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/11.8_dbg_san/sql/sql_parse.cc:1416
            #37 0x0000559f53d8c76d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002fb8, put_in_cache=true)at /test/11.8_dbg_san/sql/sql_connect.cc:1415
            #38 0x0000559f53d8c028 in handle_one_connection (arg=0x508000002fb8)at /test/11.8_dbg_san/sql/sql_connect.cc:1327
            #39 0x0000559f530cbb5d in asan_thread_start(void*) ()
            #40 0x000014d93f69ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
            #41 0x000014d93f729c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
            

            Roel Roel Van de Paar added a comment - - edited Interestingly, the testcase from the last comment gives a somewhat different stack on UBSAN (Clang) builds (i.e. no Field_newdate::get_date frame): CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang) mariadbd: /test/11.8_dbg_san/sql/field.cc:6993: virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const: Assertion `marked_for_read()' failed. CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang) Core was generated by `/test/UBASAN_MD170125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-default'. Program terminated with signal SIGABRT, Aborted. #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44   [Current thread is 1 (LWP 2009637)] (gdb) bt #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #2 __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89 #3 0x0000559f5453c7e5 in handle_fatal_signal (sig=<optimized out>)at /test/11.8_dbg_san/sql/signal_handler.cc:298 #4 <signal handler called> #5 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #6 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #7 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89 #8 0x000014d93f64526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26 #9 0x000014d93f6288ff in __GI_abort () at ./stdlib/abort.c:79 #10 0x000014d93f62881b in __assert_fail_base (fmt=0x14d93f7d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x559f56ab3e80 <str> "marked_for_read()", file=file@entry=0x559f56ab10f0 "/test/11.8_dbg_san/sql/field.cc", line=line@entry=6993, function=function@entry=0x559f56ab8040 <__PRETTY_FUNCTION__._ZNK13Field_newdate8get_TIMEEP13st_mysql_timePKh11date_mode_t> "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:94 #11 0x000014d93f63b507 in __assert_fail (assertion=0x559f56ab3e80 <str> "marked_for_read()", file=0x559f56ab10f0 "/test/11.8_dbg_san/sql/field.cc", line=6993, function=0x559f56ab8040 <__PRETTY_FUNCTION__._ZNK13Field_newdate8get_TIMEEP13st_mysql_timePKh11date_mode_t> "virtual bool Field_newdate::get_TIME(MYSQL_TIME *, const uchar *, date_mode_t) const") at ./assert/assert.c:103 #12 0x0000559f54494d20 in Field_newdate::get_TIME (this=0x5250000b7208, ltime=0x14d90e3603e0, pos=0x5250000b71a9 "", fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg_san/sql/field.cc:6993 #13 0x0000559f54603d8d in Item_field::get_date (this=<optimized out>, thd=<optimized out>, ltime=0x14d90e3603e0, fuzzydate={m_mode = date_mode_t::FRAC_TRUNCATE})at /test/11.8_dbg_san/sql/item.cc:3483 #14 0x0000559f54b01abe in Item_func_date_format::val_str (this=<optimized out>, str=<optimized out>)at /test/11.8_dbg_san/sql/item_timefunc.cc:1914 #15 0x0000559f54690cb2 in Item_func_conv_charset::Item_func_conv_charset (this=0x5250000b8698, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.h:1931 #16 0x0000559f545d8a06 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:1308 #17 0x0000559f545f2a73 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:2695 #18 0x0000559f540b23b5 in Type_std_attributes::agg_arg_charsets (this=0x5250000b84e8, c=@0x5250000b84f0: {collation = 0x52100000fc88, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3416 #19 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x5250000b84e8, c=@0x5250000b84f0: {collation = 0x52100000fc88, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3431 #20 Type_std_attributes::aggregate_attributes_string (this=0x5250000b84e8, func_name=@0x14d90de2e7e0: {str = 0x559f56aecf20 <str> "if", length = 2}, items=0x5250000b85b8, nitems=2) at /test/11.8_dbg_san/sql/sql_type.cc:1367 #21 0x0000559f547e9351 in Item_hybrid_func::fix_attributes (this=0x5250000b84e0, items=<optimized out>, nitems=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:685 #22 0x0000559f54783048 in Item_func_case_abbreviation2::fix_length_and_dec2 (this=<optimized out>, items=<optimized out>)at /test/11.8_dbg_san/sql/item_cmpfunc.h:1192 #23 0x0000559f547838fe in Item_func_case_abbreviation2::fix_length_and_dec2_eliminate_null (this=0x5250000b84e0, items=0x5250000b85b8)at /test/11.8_dbg_san/sql/item_cmpfunc.h:1219 #24 0x0000559f547e480e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:366 #25 0x0000559f53c4938b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/11.8_dbg_san/sql/table.cc:3787 #26 0x0000559f53c4ac92 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>) at /test/11.8_dbg_san/sql/table.cc:3897 #27 0x0000559f5340f1a3 in open_table (thd=<optimized out>, table_list=0x52d0003c0558, ot_ctx=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:2377 #28 0x0000559f5341e538 in open_and_process_table (thd=0x52b000165218, tables=0x52d0003c0558, counter=0x14d90df32bc0, flags=0, prelocking_strategy=0x14d90e35f820, ot_ctx=0x14d90e1dfaf0, has_prelocking_list=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4177 #29 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x14d90df32ba0, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4663 #30 0x0000559f53428dc5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:5632 #31 0x0000559f5356dbaf in open_and_lock_tables (thd=0x52b000165218, tables=0x52d0003c0558, derived=true, flags=0)at /test/11.8_dbg_san/sql/sql_base.h:533 #32 mysql_insert (thd=<optimized out>, table_list=0x52d0003c0558, fields=<optimized out>, values_list=<optimized out>, update_fields=<optimized out>, update_values=<optimized out>, duplic=<optimized out>, ignore=<optimized out>, result=<optimized out>)at /test/11.8_dbg_san/sql/sql_insert.cc:784 #33 0x0000559f536fc5d4 in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/11.8_dbg_san/sql/sql_parse.cc:4485 #34 0x0000559f536c6589 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x52d0003c0438 "INSERT INTO t (a) VALUES (1)", length=<optimized out>, parser_state=parser_state@entry=0x14d90e53f8a0)at /test/11.8_dbg_san/sql/sql_parse.cc:7915 #35 0x0000559f536ba64c in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.8_dbg_san/sql/sql_parse.cc:1903 #36 0x0000559f536c8fae in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/11.8_dbg_san/sql/sql_parse.cc:1416 #37 0x0000559f53d8c76d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002fb8, put_in_cache=true)at /test/11.8_dbg_san/sql/sql_connect.cc:1415 #38 0x0000559f53d8c028 in handle_one_connection (arg=0x508000002fb8)at /test/11.8_dbg_san/sql/sql_connect.cc:1327 #39 0x0000559f530cbb5d in asan_thread_start(void*) () #40 0x000014d93f69ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447 #41 0x000014d93f729c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

            One more offset stack on UBSAN (Clang) builds with this testcase:

            CREATE TABLE t (d1 DATE NOT NULL,d2 DATE NOT NULL,gd TEXT AS (CONCAT (d1,IF(d1=d2,DATE_FORMAT(d2,0),0))));
            SELECT * FROM (SELECT f2 AS a FROM t UNION SELECT f3 FROM t) t;
            SET collation_connection=ucs2_general_ci;
            INSERT INTO t (b) SELECT * FROM t;
            

            CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang)

            mariadbd: /test/11.8_dbg_san/sql/field.cc:6963: virtual String *Field_newdate::val_str(String *, String *): Assertion `marked_for_read()' failed.
            

            CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang)

            Core was generated by `/test/UBASAN_MD170125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-default'.
            Program terminated with signal SIGABRT, Aborted.
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
             
            [Current thread is 1 (LWP 2096031)]
            (gdb) bt
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #1  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #2  __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89
            #3  0x0000558e4ae617e5 in handle_fatal_signal (sig=<optimized out>)at /test/11.8_dbg_san/sql/signal_handler.cc:298
            #4  <signal handler called>
            #5  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #6  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #7  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89
            #8  0x000014e96e64526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26
            #9  0x000014e96e6288ff in __GI_abort () at ./stdlib/abort.c:79
            #10 0x000014e96e62881b in __assert_fail_base (fmt=0x14e96e7d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x558e4d3d8e80 <str> "marked_for_read()", file=file@entry=0x558e4d3d60f0 "/test/11.8_dbg_san/sql/field.cc", line=line@entry=6963, function=function@entry=0x558e4d3dcfe0 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)") at ./assert/assert.c:94
            #11 0x000014e96e63b507 in __assert_fail (assertion=0x558e4d3d8e80 <str> "marked_for_read()", file=0x558e4d3d60f0 "/test/11.8_dbg_san/sql/field.cc", line=6963, function=0x558e4d3dcfe0 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)")at ./assert/assert.c:103
            #12 0x0000558e4adb94fb in Field_newdate::val_str (this=<optimized out>, val_buffer=0x14e93cd4c4b0, val_ptr=<optimized out>)at /test/11.8_dbg_san/sql/field.cc:6963
            #13 0x0000558e4afb5cb2 in Item_func_conv_charset::Item_func_conv_charset (this=0x5210001d1380, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.h:1931
            #14 0x0000558e4aefda06 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:1308
            #15 0x0000558e4af17a73 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:2695
            #16 0x0000558e4a8d2ab0 in Type_std_attributes::agg_arg_charsets (this=0x5210001d1158, c=@0x5210001d1160: {collation = 0x558e4eec2600 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14e93cc35920: {str = 0x558e4d43c440 <str> "concat", length = 6}, items=0x5210001d11d0, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3416
            #17 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x5210001d1158, c=@0x5210001d1160: {collation = 0x558e4eec2600 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14e93cc35920: {str = 0x558e4d43c440 <str> "concat", length = 6}, items=0x5210001d11d0, nitems=2, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3431
            #18 Item_func_or_sum::agg_arg_charsets_for_string_result (this=0x5210001d1150, c=<optimized out>, items=<optimized out>, nitems=<optimized out>, item_sep=<optimized out>) at /test/11.8_dbg_san/sql/item.h:5674
            #19 0x0000558e4b23c6a3 in Item_func_concat::fix_length_and_dec (this=0x5210001d1150, thd=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.cc:885
            #20 0x0000558e4b10980e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:366
            #21 0x0000558e4b22e389 in Item_str_func::fix_fields (this=0x5210001d1150, thd=0x52b000165218, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.cc:135
            #22 0x0000558e4a56e38b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/11.8_dbg_san/sql/table.cc:3787
            #23 0x0000558e4a56fc92 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>) at /test/11.8_dbg_san/sql/table.cc:3897
            #24 0x0000558e49d341a3 in open_table (thd=<optimized out>, table_list=0x52d0003c1458, ot_ctx=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:2377
            #25 0x0000558e49d43538 in open_and_process_table (thd=0x52b000165218, tables=0x52d0003c1458, counter=0x14e93cd4b7c0, flags=0, prelocking_strategy=0x14e93cc34ee0, ot_ctx=0x14e93d0060f0, has_prelocking_list=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4177
            #26 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x14e93cd4b7a0, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4663
            #27 0x0000558e49d4ddc5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:5632
            #28 0x0000558e49ef203f in open_and_lock_tables (thd=0x52b000165218, tables=<optimized out>, derived=<optimized out>, flags=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.h:533
            #29 0x0000558e4a0258fe in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/11.8_dbg_san/sql/sql_parse.cc:4578
            #30 0x0000558e49feb589 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x52d0003c0438 "INSERT INTO t (b) SELECT * FROM t", length=<optimized out>, parser_state=parser_state@entry=0x14e93d3478a0)at /test/11.8_dbg_san/sql/sql_parse.cc:7915
            #31 0x0000558e49fdf64c in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.8_dbg_san/sql/sql_parse.cc:1903
            #32 0x0000558e49fedfae in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/11.8_dbg_san/sql/sql_parse.cc:1416
            #33 0x0000558e4a6b176d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002fb8, put_in_cache=true)at /test/11.8_dbg_san/sql/sql_connect.cc:1415
            #34 0x0000558e4a6b1028 in handle_one_connection (arg=0x508000002fb8)at /test/11.8_dbg_san/sql/sql_connect.cc:1327
            #35 0x0000558e499f0b5d in asan_thread_start(void*) ()
            #36 0x000014e96e69ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
            #37 0x000014e96e729c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
            

            Roel Roel Van de Paar added a comment - One more offset stack on UBSAN (Clang) builds with this testcase: CREATE TABLE t (d1 DATE NOT NULL ,d2 DATE NOT NULL ,gd TEXT AS (CONCAT (d1, IF (d1=d2,DATE_FORMAT(d2,0),0)))); SELECT * FROM ( SELECT f2 AS a FROM t UNION SELECT f3 FROM t) t; SET collation_connection=ucs2_general_ci; INSERT INTO t (b) SELECT * FROM t; CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang) mariadbd: /test/11.8_dbg_san/sql/field.cc:6963: virtual String *Field_newdate::val_str(String *, String *): Assertion `marked_for_read()' failed. CS 11.8.0 cacaaebf01939d387645fb850ceeec5392496171 (Debug, UBASAN, Clang) Core was generated by `/test/UBASAN_MD170125-mariadb-11.8.0-linux-x86_64-dbg/bin/mariadbd --no-default'. Program terminated with signal SIGABRT, Aborted. #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44   [Current thread is 1 (LWP 2096031)] (gdb) bt #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #2 __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89 #3 0x0000558e4ae617e5 in handle_fatal_signal (sig=<optimized out>)at /test/11.8_dbg_san/sql/signal_handler.cc:298 #4 <signal handler called> #5 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #6 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #7 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89 #8 0x000014e96e64526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26 #9 0x000014e96e6288ff in __GI_abort () at ./stdlib/abort.c:79 #10 0x000014e96e62881b in __assert_fail_base (fmt=0x14e96e7d01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x558e4d3d8e80 <str> "marked_for_read()", file=file@entry=0x558e4d3d60f0 "/test/11.8_dbg_san/sql/field.cc", line=line@entry=6963, function=function@entry=0x558e4d3dcfe0 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)") at ./assert/assert.c:94 #11 0x000014e96e63b507 in __assert_fail (assertion=0x558e4d3d8e80 <str> "marked_for_read()", file=0x558e4d3d60f0 "/test/11.8_dbg_san/sql/field.cc", line=6963, function=0x558e4d3dcfe0 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)")at ./assert/assert.c:103 #12 0x0000558e4adb94fb in Field_newdate::val_str (this=<optimized out>, val_buffer=0x14e93cd4c4b0, val_ptr=<optimized out>)at /test/11.8_dbg_san/sql/field.cc:6963 #13 0x0000558e4afb5cb2 in Item_func_conv_charset::Item_func_conv_charset (this=0x5210001d1380, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.h:1931 #14 0x0000558e4aefda06 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:1308 #15 0x0000558e4af17a73 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/11.8_dbg_san/sql/item.cc:2695 #16 0x0000558e4a8d2ab0 in Type_std_attributes::agg_arg_charsets (this=0x5210001d1158, c=@0x5210001d1160: {collation = 0x558e4eec2600 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14e93cc35920: {str = 0x558e4d43c440 <str> "concat", length = 6}, items=0x5210001d11d0, nitems=2, flags=11, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3416 #17 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x5210001d1158, c=@0x5210001d1160: {collation = 0x558e4eec2600 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x14e93cc35920: {str = 0x558e4d43c440 <str> "concat", length = 6}, items=0x5210001d11d0, nitems=2, item_sep=1)at /test/11.8_dbg_san/sql/sql_type.h:3431 #18 Item_func_or_sum::agg_arg_charsets_for_string_result (this=0x5210001d1150, c=<optimized out>, items=<optimized out>, nitems=<optimized out>, item_sep=<optimized out>) at /test/11.8_dbg_san/sql/item.h:5674 #19 0x0000558e4b23c6a3 in Item_func_concat::fix_length_and_dec (this=0x5210001d1150, thd=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.cc:885 #20 0x0000558e4b10980e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_func.cc:366 #21 0x0000558e4b22e389 in Item_str_func::fix_fields (this=0x5210001d1150, thd=0x52b000165218, ref=<optimized out>)at /test/11.8_dbg_san/sql/item_strfunc.cc:135 #22 0x0000558e4a56e38b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/11.8_dbg_san/sql/table.cc:3787 #23 0x0000558e4a56fc92 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>) at /test/11.8_dbg_san/sql/table.cc:3897 #24 0x0000558e49d341a3 in open_table (thd=<optimized out>, table_list=0x52d0003c1458, ot_ctx=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:2377 #25 0x0000558e49d43538 in open_and_process_table (thd=0x52b000165218, tables=0x52d0003c1458, counter=0x14e93cd4b7c0, flags=0, prelocking_strategy=0x14e93cc34ee0, ot_ctx=0x14e93d0060f0, has_prelocking_list=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4177 #26 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x14e93cd4b7a0, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:4663 #27 0x0000558e49d4ddc5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.cc:5632 #28 0x0000558e49ef203f in open_and_lock_tables (thd=0x52b000165218, tables=<optimized out>, derived=<optimized out>, flags=<optimized out>)at /test/11.8_dbg_san/sql/sql_base.h:533 #29 0x0000558e4a0258fe in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/11.8_dbg_san/sql/sql_parse.cc:4578 #30 0x0000558e49feb589 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x52d0003c0438 "INSERT INTO t (b) SELECT * FROM t", length=<optimized out>, parser_state=parser_state@entry=0x14e93d3478a0)at /test/11.8_dbg_san/sql/sql_parse.cc:7915 #31 0x0000558e49fdf64c in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.8_dbg_san/sql/sql_parse.cc:1903 #32 0x0000558e49fedfae in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/11.8_dbg_san/sql/sql_parse.cc:1416 #33 0x0000558e4a6b176d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002fb8, put_in_cache=true)at /test/11.8_dbg_san/sql/sql_connect.cc:1415 #34 0x0000558e4a6b1028 in handle_one_connection (arg=0x508000002fb8)at /test/11.8_dbg_san/sql/sql_connect.cc:1327 #35 0x0000558e499f0b5d in asan_thread_start(void*) () #36 0x000014e96e69ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447 #37 0x000014e96e729c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
            Roel Roel Van de Paar added a comment - - edited

            Also, the last testcase above gives a different stack on preview-11.8-preview:

            CS 11.8.0 349b8a10274c88887b7b2af24b4200724617611f (Debug, UBASAN, Clang)

            mariadbd: /test/preview-11.8-preview_dbg_san/sql/field.cc:6963: virtual String *Field_newdate::val_str(String *, String *): Assertion `marked_for_read()' failed.
            

            CS 11.8.0 349b8a10274c88887b7b2af24b4200724617611f (Debug, UBASAN, Clang)

            Core was generated by `/test/preview-11.8-preview_UBASAN_MD110125-mariadb-11.8.0-linux-x86_64-dbg/bin/'.
            Program terminated with signal SIGABRT, Aborted.
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
             
            [Current thread is 1 (LWP 4123469)]
            (gdb) bt
            #0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #1  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #2  __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89
            #3  0x0000559608d4f50a in handle_fatal_signal (sig=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/signal_handler.cc:366
            #4  <signal handler called>
            #5  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
            #6  __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
            #7  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89
            #8  0x0000152a85c4526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26
            #9  0x0000152a85c288ff in __GI_abort () at ./stdlib/abort.c:79
            #10 0x0000152a85c2881b in __assert_fail_base (fmt=0x152a85dd01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x55960b2da920 <str> "marked_for_read()", file=file@entry=0x55960b2d7b80 "/test/preview-11.8-preview_dbg_san/sql/field.cc", line=line@entry=6963, function=function@entry=0x55960b2dea80 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)") at ./assert/assert.c:94
            #11 0x0000152a85c3b507 in __assert_fail (assertion=0x55960b2da920 <str> "marked_for_read()", file=0x55960b2d7b80 "/test/preview-11.8-preview_dbg_san/sql/field.cc", line=6963, function=0x55960b2dea80 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)")at ./assert/assert.c:103
            #12 0x0000559608ca736b in Field_newdate::val_str (this=<optimized out>, val_buffer=0x152a58b4f930, val_ptr=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/field.cc:6963
            #13 0x0000559608ea2e42 in Item_func_conv_charset::Item_func_conv_charset (this=0x51d000201fd0, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.h:1933
            #14 0x0000559608debc76 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.cc:1308
            #15 0x0000559608e05d13 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.cc:2702
            #16 0x00005596087bd930 in Type_std_attributes::agg_arg_charsets (this=0x51d000201da8, c=@0x51d000201db0: {collation = 0x55960cdc6ba0 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x152a58a37720: {str = 0x55960b33f240 <str> "concat", length = 6}, items=0x51d000201e20, nitems=2, flags=11, item_sep=1)at /test/preview-11.8-preview_dbg_san/sql/sql_type.h:3416
            #17 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x51d000201da8, c=@0x51d000201db0: {collation = 0x55960cdc6ba0 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x152a58a37720: {str = 0x55960b33f240 <str> "concat", length = 6}, items=0x51d000201e20, nitems=2, item_sep=1)at /test/preview-11.8-preview_dbg_san/sql/sql_type.h:3431
            #18 Item_func_or_sum::agg_arg_charsets_for_string_result (this=0x51d000201da0, c=<optimized out>, items=<optimized out>, nitems=<optimized out>, item_sep=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.h:5685
            #19 0x0000559609127d23 in Item_func_concat::fix_length_and_dec (this=0x51d000201da0, thd=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.cc:885
            #20 0x0000559608fe8f4e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_func.cc:366
            #21 0x0000559609119a09 in Item_str_func::fix_fields (this=0x51d000201da0, thd=0x52b000165218, ref=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.cc:135
            #22 0x0000559608458a8b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/preview-11.8-preview_dbg_san/sql/table.cc:3787
            #23 0x000055960845a392 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/table.cc:3897
            #24 0x0000559607c12903 in open_table (thd=<optimized out>, table_list=0x5290000ec278, ot_ctx=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:2378
            #25 0x0000559607c21938 in open_and_process_table (thd=0x52b000165218, tables=0x5290000ec278, counter=0x152a58b4ec40, flags=0, prelocking_strategy=0x152a58a36ce0, ot_ctx=0x152a58e07af0, has_prelocking_list=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:4177
            #26 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x152a58b4ec20, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:4663
            #27 0x0000559607c2d7b5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:5683
            #28 0x0000559607dd610f in open_and_lock_tables (thd=0x52b000165218, tables=<optimized out>, derived=<optimized out>, flags=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.h:579
            #29 0x0000559607f1a5a4 in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:4564
            #30 0x0000559607ee04a9 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x5290000eb238 "INSERT INTO t (b) SELECT * FROM t", length=<optimized out>, parser_state=parser_state@entry=0x152a591538a0)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:7901
            #31 0x0000559607ed4c58 in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:1903
            #32 0x0000559607ee2ece in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:1416
            #33 0x0000559608599b3d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002c38, put_in_cache=true)at /test/preview-11.8-preview_dbg_san/sql/sql_connect.cc:1415
            #34 0x00005596085993f8 in handle_one_connection (arg=0x508000002c38)at /test/preview-11.8-preview_dbg_san/sql/sql_connect.cc:1327
            #35 0x00005596078cc90d in asan_thread_start(void*) ()
            #36 0x0000152a85c9ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
            #37 0x0000152a85d29c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
            

            Roel Roel Van de Paar added a comment - - edited Also, the last testcase above gives a different stack on preview-11.8-preview : CS 11.8.0 349b8a10274c88887b7b2af24b4200724617611f (Debug, UBASAN, Clang) mariadbd: /test/preview-11.8-preview_dbg_san/sql/field.cc:6963: virtual String *Field_newdate::val_str(String *, String *): Assertion `marked_for_read()' failed. CS 11.8.0 349b8a10274c88887b7b2af24b4200724617611f (Debug, UBASAN, Clang) Core was generated by `/test/preview-11.8-preview_UBASAN_MD110125-mariadb-11.8.0-linux-x86_64-dbg/bin/'. Program terminated with signal SIGABRT, Aborted. #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44   [Current thread is 1 (LWP 4123469)] (gdb) bt #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #2 __GI___pthread_kill (threadid=<optimized out>, signo=6)at ./nptl/pthread_kill.c:89 #3 0x0000559608d4f50a in handle_fatal_signal (sig=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/signal_handler.cc:366 #4 <signal handler called> #5 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44 #6 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78 #7 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89 #8 0x0000152a85c4526e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26 #9 0x0000152a85c288ff in __GI_abort () at ./stdlib/abort.c:79 #10 0x0000152a85c2881b in __assert_fail_base (fmt=0x152a85dd01e8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x55960b2da920 <str> "marked_for_read()", file=file@entry=0x55960b2d7b80 "/test/preview-11.8-preview_dbg_san/sql/field.cc", line=line@entry=6963, function=function@entry=0x55960b2dea80 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)") at ./assert/assert.c:94 #11 0x0000152a85c3b507 in __assert_fail (assertion=0x55960b2da920 <str> "marked_for_read()", file=0x55960b2d7b80 "/test/preview-11.8-preview_dbg_san/sql/field.cc", line=6963, function=0x55960b2dea80 <__PRETTY_FUNCTION__._ZN13Field_newdate7val_strEP6StringS1_> "virtual String *Field_newdate::val_str(String *, String *)")at ./assert/assert.c:103 #12 0x0000559608ca736b in Field_newdate::val_str (this=<optimized out>, val_buffer=0x152a58b4f930, val_ptr=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/field.cc:6963 #13 0x0000559608ea2e42 in Item_func_conv_charset::Item_func_conv_charset (this=0x51d000201fd0, thd=0x52b000165218, a=<optimized out>, cs=<optimized out>, cache_if_const=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.h:1933 #14 0x0000559608debc76 in Item::safe_charset_converter (this=0x6, thd=0x52b000165218, tocs=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.cc:1308 #15 0x0000559608e05d13 in Type_std_attributes::agg_item_set_converter (this=<optimized out>, coll=<optimized out>, fname=<optimized out>, args=<optimized out>, nargs=<optimized out>, flags=<optimized out>, item_sep=<optimized out>, single_err=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.cc:2702 #16 0x00005596087bd930 in Type_std_attributes::agg_arg_charsets (this=0x51d000201da8, c=@0x51d000201db0: {collation = 0x55960cdc6ba0 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x152a58a37720: {str = 0x55960b33f240 <str> "concat", length = 6}, items=0x51d000201e20, nitems=2, flags=11, item_sep=1)at /test/preview-11.8-preview_dbg_san/sql/sql_type.h:3416 #17 Type_std_attributes::agg_arg_charsets_for_string_result (this=0x51d000201da8, c=@0x51d000201db0: {collation = 0x55960cdc6ba0 <my_charset_ucs2_general_ci>, derivation = DERIVATION_COERCIBLE, repertoire = MY_REPERTOIRE_ASCII}, func_name=@0x152a58a37720: {str = 0x55960b33f240 <str> "concat", length = 6}, items=0x51d000201e20, nitems=2, item_sep=1)at /test/preview-11.8-preview_dbg_san/sql/sql_type.h:3431 #18 Item_func_or_sum::agg_arg_charsets_for_string_result (this=0x51d000201da0, c=<optimized out>, items=<optimized out>, nitems=<optimized out>, item_sep=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item.h:5685 #19 0x0000559609127d23 in Item_func_concat::fix_length_and_dec (this=0x51d000201da0, thd=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.cc:885 #20 0x0000559608fe8f4e in Item_func::fix_fields (this=<optimized out>, thd=<optimized out>, ref=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_func.cc:366 #21 0x0000559609119a09 in Item_str_func::fix_fields (this=0x51d000201da0, thd=0x52b000165218, ref=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/item_strfunc.cc:135 #22 0x0000559608458a8b in Virtual_column_info::fix_expr (this=<optimized out>, thd=0x52b000165218) at /test/preview-11.8-preview_dbg_san/sql/table.cc:3787 #23 0x000055960845a392 in TABLE::vcol_fix_expr (this=<optimized out>, thd=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/table.cc:3897 #24 0x0000559607c12903 in open_table (thd=<optimized out>, table_list=0x5290000ec278, ot_ctx=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:2378 #25 0x0000559607c21938 in open_and_process_table (thd=0x52b000165218, tables=0x5290000ec278, counter=0x152a58b4ec40, flags=0, prelocking_strategy=0x152a58a36ce0, ot_ctx=0x152a58e07af0, has_prelocking_list=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:4177 #26 open_tables (thd=0x52b000165218, options=<optimized out>, start=0x152a58b4ec20, counter=<optimized out>, flags=0, prelocking_strategy=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:4663 #27 0x0000559607c2d7b5 in open_and_lock_tables (thd=0x52b000165218, options=<optimized out>, tables=<error reading variable: Cannot access memory at address 0x6>, derived=<optimized out>, flags=<optimized out>, prelocking_strategy=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.cc:5683 #28 0x0000559607dd610f in open_and_lock_tables (thd=0x52b000165218, tables=<optimized out>, derived=<optimized out>, flags=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_base.h:579 #29 0x0000559607f1a5a4 in mysql_execute_command (thd=0x52b000165218, is_called_from_prepared_stmt=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:4564 #30 0x0000559607ee04a9 in mysql_parse (thd=thd@entry=0x52b000165218, rawbuf=rawbuf@entry=0x5290000eb238 "INSERT INTO t (b) SELECT * FROM t", length=<optimized out>, parser_state=parser_state@entry=0x152a591538a0)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:7901 #31 0x0000559607ed4c58 in dispatch_command (command=<optimized out>, thd=0x52b000165218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>)at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:1903 #32 0x0000559607ee2ece in do_command (thd=thd@entry=0x52b000165218, blocking=true) at /test/preview-11.8-preview_dbg_san/sql/sql_parse.cc:1416 #33 0x0000559608599b3d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x508000002c38, put_in_cache=true)at /test/preview-11.8-preview_dbg_san/sql/sql_connect.cc:1415 #34 0x00005596085993f8 in handle_one_connection (arg=0x508000002c38)at /test/preview-11.8-preview_dbg_san/sql/sql_connect.cc:1327 #35 0x00005596078cc90d in asan_thread_start(void*) () #36 0x0000152a85c9ca94 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447 #37 0x0000152a85d29c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

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              bar Alexander Barkov
              Roel Roel Van de Paar
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