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  1. MariaDB Server
  2. MDEV-29556

Server crash in my_checksum or garbage results upon using CRC32 function

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      Description

      Important: For the crash part, it is sometimes a plain SIGSEGV, not an ASAN error, but it only happens for me on an ASAN build (with or without debug). I don't know whether it makes it a bogus issue.
      The non-crash part applies to any build type, but it's quite random (some builds appear to behave).

      --source include/have_innodb.inc
      --source include/have_sequence.inc
       
      SET @stats= @@innodb_stats_persistent;
       
      SET GLOBAL innodb_stats_persistent= ON;
       
      CREATE TABLE t (id BIGINT PRIMARY KEY, a VARBINARY(400), b VARCHAR(4000) AS (a) VIRTUAL, c CHAR(255), d TIMESTAMP(6), e DATE) ENGINE=InnoDB CHARACTER SET utf8;
      INSERT INTO t (id, a) SELECT seq, '' FROM seq_1_to_803;
      SELECT GROUP_CONCAT(CRC32(b)) FROM t GROUP BY IF(id, 1, '');
       
      # Cleanup
      DROP TABLE t;
      SET GLOBAL innodb_stats_persistent= @stats;
      

      10.4 3e3cfa89 ASAN build

      #3  <signal handler called>
      #4  0x00007fe2b39a4fe9 in crc32_z () from /lib/x86_64-linux-gnu/libz.so.1
      #5  0x00000000031ac987 in my_checksum (crc=0, pos=0x62b0000d9734 '\276' <repeats 200 times>..., length=48830) at /data/src/10.4/mysys/checksum.c:38
      #6  0x00000000019933cd in Item_func_crc32::val_int (this=0x62b0000a1980) at /data/src/10.4/sql/item_strfunc.cc:4240
      #7  0x00000000017a181e in Item::save_int_in_field (this=0x62b0000a1980, field=0x6190000f8810, no_conversions=true) at /data/src/10.4/sql/item.cc:6704
      #8  0x00000000013bec4f in Type_handler_int_result::Item_save_in_field (this=0x475a540 <type_handler_long>, item=0x62b0000a1980, field=0x6190000f8810, no_conversions=true) at /data/src/10.4/sql/sql_type.cc:3842
      #9  0x00000000017a1ac7 in Item::save_in_field (this=0x62b0000a1980, field=0x6190000f8810, no_conversions=true) at /data/src/10.4/sql/item.cc:6714
      #10 0x0000000000a906be in Item_result_field::save_in_result_field (this=0x62b0000a1980, no_conversions=true) at /data/src/10.4/sql/item.h:3265
      #11 0x0000000000e54cb9 in copy_funcs (func_ptr=0x62200002cd30, thd=0x62b00009a270) at /data/src/10.4/sql/sql_select.cc:25806
      #12 0x0000000001a50056 in Item_func_group_concat::add (this=0x62b0000a1ac8) at /data/src/10.4/sql/item_sum.cc:3993
      #13 0x0000000001a597bf in Aggregator_simple::add (this=0x62b0000a59b8) at /data/src/10.4/sql/item_sum.h:716
      #14 0x0000000000eb3d8f in Item_sum::aggregator_add (this=0x62b0000a1ac8) at /data/src/10.4/sql/item_sum.h:558
      #15 0x0000000000eb3ce5 in Item_sum::reset_and_add (this=0x62b0000a1ac8) at /data/src/10.4/sql/item_sum.h:443
      #16 0x0000000000e53e1f in init_sum_functions (func_ptr=0x62b0000a3b48, end_ptr=0x62b0000a3b50) at /data/src/10.4/sql/sql_select.cc:25758
      #17 0x0000000000e471c4 in end_send_group (join=0x62b0000a3418, join_tab=0x62b0000a4d20, end_of_records=false) at /data/src/10.4/sql/sql_select.cc:22084
      #18 0x0000000000e4c0f8 in evaluate_join_record (join=0x62b0000a3418, join_tab=0x62b0000a4978, error=0) at /data/src/10.4/sql/sql_select.cc:20911
      #19 0x0000000000e49608 in sub_select (join=0x62b0000a3418, join_tab=0x62b0000a4978, end_of_records=false) at /data/src/10.4/sql/sql_select.cc:20684
      #20 0x0000000000df62c2 in do_select (join=0x62b0000a3418, procedure=0x0) at /data/src/10.4/sql/sql_select.cc:20220
      #21 0x0000000000df2322 in JOIN::exec_inner (this=0x62b0000a3418) at /data/src/10.4/sql/sql_select.cc:4565
      #22 0x0000000000dee8cf in JOIN::exec (this=0x62b0000a3418) at /data/src/10.4/sql/sql_select.cc:4347
      #23 0x0000000000d5818b in mysql_select (thd=0x62b00009a270, tables=0x62b0000a2010, wild_num=0, fields=..., conds=0x0, og_num=1, order=0x0, group=0x62b0000a2a70, having=0x0, proc_param=0x0, select_options=2147748608, result=0x62b0000a33e8, unit=0x62b00009e1a0, select_lex=0x62b0000a1378) at /data/src/10.4/sql/sql_select.cc:4786
      #24 0x0000000000d56a11 in handle_select (thd=0x62b00009a270, lex=0x62b00009e0e0, result=0x62b0000a33e8, setup_tables_done_option=0) at /data/src/10.4/sql/sql_select.cc:436
      #25 0x0000000000c903b9 in execute_sqlcom_select (thd=0x62b00009a270, all_tables=0x62b0000a2010) at /data/src/10.4/sql/sql_parse.cc:6450
      #26 0x0000000000c73064 in mysql_execute_command (thd=0x62b00009a270) at /data/src/10.4/sql/sql_parse.cc:3964
      #27 0x0000000000c5a0d7 in mysql_parse (thd=0x62b00009a270, rawbuf=0x62b0000a1290 "SELECT GROUP_CONCAT(CRC32(b)) FROM t GROUP BY IF(id, 1, '')", length=59, parser_state=0x7fe29ca9e740, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7996
      #28 0x0000000000c523d8 in dispatch_command (command=COM_QUERY, thd=0x62b00009a270, packet=0x62900029e271 "", packet_length=59, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1857
      #29 0x0000000000c5c924 in do_command (thd=0x62b00009a270) at /data/src/10.4/sql/sql_parse.cc:1378
      #30 0x00000000011d9a7a in do_handle_one_connection (connect=0x611000043db0) at /data/src/10.4/sql/sql_connect.cc:1420
      #31 0x00000000011d9164 in handle_one_connection (arg=0x611000043db0) at /data/src/10.4/sql/sql_connect.cc:1324
      #32 0x0000000002300332 in pfs_spawn_thread (arg=0x6160000402f0) at /data/src/10.4/storage/perfschema/pfs.cc:1869
      #33 0x00007fe2b34baea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
      #34 0x00007fe2b31f2def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      10.10 5deccac4

      ==3849289==ERROR: AddressSanitizer: unknown-crash on address 0x62b0001ae62c at pc 0x000003638b3b bp 0x7f1ffbfeebb0 sp 0x7f1ffbfeeba8
      READ of size 16 at 0x62b0001ae62c thread T20
          #0 0x3638b3a in crcr32_calc_pclmulqdq /data/src/10.10/mysys/crc32/crc32_x86.c:267:11
          #1 0x3638200 in crc32_pclmul /data/src/10.10/mysys/crc32/crc32_x86.c:333:11
          #2 0x3634bca in my_checksum /data/src/10.10/mysys/crc32ieee.cc:60:10
          #3 0x1d05c0e in Item_func_crc32::val_int() /data/src/10.10/sql/item_strfunc.cc:4501:16
          #4 0x1b0461d in Item::save_int_in_field(Field*, bool) /data/src/10.10/sql/item.cc:6842:16
          #5 0x16edc0e in Type_handler_int_result::Item_save_in_field(Item*, Field*, bool) const /data/src/10.10/sql/sql_type.cc:4350:16
          #6 0x1b048c6 in Item::save_in_field(Field*, bool) /data/src/10.10/sql/item.cc:6852:30
          #7 0xa2242d in Item_result_field::save_in_result_field(bool) /data/src/10.10/sql/item.h:3451:5
          #8 0x10b041f in copy_funcs(Item**, THD const*) /data/src/10.10/sql/sql_select.cc:26977:11
          #9 0x1e7f64d in Item_func_group_concat::add(bool) /data/src/10.10/sql/item_sum.cc:4163:7
          #10 0x1653681 in Item_func_group_concat::add() /data/src/10.10/sql/item_sum.h:2043:12
          #11 0x1e886ee in Aggregator_simple::add() /data/src/10.10/sql/item_sum.h:720:33
          #12 0xa324de in Item_sum::aggregator_add() /data/src/10.10/sql/item_sum.h:564:47
          #13 0xa21504 in Item_sum::reset_and_add() /data/src/10.10/sql/item_sum.h:445:12
          #14 0x10af5be in init_sum_functions(Item_sum**, Item_sum**) /data/src/10.10/sql/sql_select.cc:26929:22
          #15 0x10a4714 in end_send_group(JOIN*, st_join_table*, bool) /data/src/10.10/sql/sql_select.cc:23219:11
          #16 0x10a7b57 in evaluate_join_record(JOIN*, st_join_table*, int) /data/src/10.10/sql/sql_select.cc:21993:11
          #17 0xfaa826 in sub_select(JOIN*, st_join_table*, bool) /data/src/10.10/sql/sql_select.cc:21763:9
          #18 0x103c435 in do_select(JOIN*, Procedure*) /data/src/10.10/sql/sql_select.cc:21308:14
          #19 0x10388fe in JOIN::exec_inner() /data/src/10.10/sql/sql_select.cc:4812:50
          #20 0x1034cd6 in JOIN::exec() /data/src/10.10/sql/sql_select.cc:4590:3
          #21 0xfacec9 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/src/10.10/sql/sql_select.cc:5070:9
          #22 0xfabac2 in handle_select(THD*, LEX*, select_result*, unsigned long) /data/src/10.10/sql/sql_select.cc:581:10
          #23 0xe7d397 in execute_sqlcom_select(THD*, TABLE_LIST*) /data/src/10.10/sql/sql_parse.cc:6261:12
          #24 0xe60e5d in mysql_execute_command(THD*, bool) /data/src/10.10/sql/sql_parse.cc:3945:12
          #25 0xe47c42 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /data/src/10.10/sql/sql_parse.cc:8035:18
          #26 0xe409b7 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /data/src/10.10/sql/sql_parse.cc:1894:7
          #27 0xe4aa0f in do_command(THD*, bool) /data/src/10.10/sql/sql_parse.cc:1407:17
          #28 0x14859d6 in do_handle_one_connection(CONNECT*, bool) /data/src/10.10/sql/sql_connect.cc:1416:11
          #29 0x1485113 in handle_one_connection /data/src/10.10/sql/sql_connect.cc:1318:5
          #30 0x2584577 in pfs_spawn_thread /data/src/10.10/storage/perfschema/pfs.cc:2201:3
          #31 0x7f200f6bdea6 in start_thread nptl/pthread_create.c:477:8
          #32 0x7f200f3f3dee in clone misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
       
      0x62b0001ae62c is located 13356 bytes inside of 26556-byte region [0x62b0001ab200,0x62b0001b19bc)
      allocated by thread T20 here:
          #0 0x8e3dfd in malloc (/mnt8t/bld/10.10-asan-nightly/bin/mariadbd+0x8e3dfd)
          #1 0x35d4a6b in sf_malloc /data/src/10.10/mysys/safemalloc.c:126:34
          #2 0x358c971 in my_malloc /data/src/10.10/mysys/my_malloc.c:90:29
          #3 0x35589d4 in root_alloc /data/src/10.10/mysys/my_alloc.c:66:10
          #4 0x355a103 in alloc_root /data/src/10.10/mysys/my_alloc.c:332:29
          #5 0x134aaa8 in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /data/src/10.10/sql/table.cc:4178:28
          #6 0xc028c4 in open_table(THD*, TABLE_LIST*, Open_table_context*) /data/src/10.10/sql/sql_base.cc:2177:12
          #7 0xc14d5b in open_and_process_table(THD*, TABLE_LIST*, unsigned int*, unsigned int, Prelocking_strategy*, bool, Open_table_context*) /data/src/10.10/sql/sql_base.cc:4106:14
          #8 0xc10a97 in open_tables(THD*, DDL_options_st const&, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) /data/src/10.10/sql/sql_base.cc:4593:14
          #9 0xc1cfe8 in open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) /data/src/10.10/sql/sql_base.cc:5567:7
          #10 0xb2b3a3 in open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) /data/src/10.10/sql/sql_base.h:510:10
          #11 0xe681a5 in mysql_execute_command(THD*, bool) /data/src/10.10/sql/sql_parse.cc:4647:15
          #12 0xe47c42 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /data/src/10.10/sql/sql_parse.cc:8035:18
          #13 0xe409b7 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /data/src/10.10/sql/sql_parse.cc:1894:7
          #14 0xe4aa0f in do_command(THD*, bool) /data/src/10.10/sql/sql_parse.cc:1407:17
          #15 0x14859d6 in do_handle_one_connection(CONNECT*, bool) /data/src/10.10/sql/sql_connect.cc:1416:11
          #16 0x1485113 in handle_one_connection /data/src/10.10/sql/sql_connect.cc:1318:5
          #17 0x2584577 in pfs_spawn_thread /data/src/10.10/storage/perfschema/pfs.cc:2201:3
          #18 0x7f200f6bdea6 in start_thread nptl/pthread_create.c:477:8
       
      Thread T20 created by T0 here:
          #0 0x8ce82a in pthread_create (/mnt8t/bld/10.10-asan-nightly/bin/mariadbd+0x8ce82a)
          #1 0x2584bcc in my_thread_create(unsigned long*, pthread_attr_t const*, void* (*)(void*), void*) /data/src/10.10/storage/perfschema/my_thread.h:52:10
          #2 0x2584b56 in pfs_spawn_thread_v1 /data/src/10.10/storage/perfschema/pfs.cc:2252:15
          #3 0x91d482 in inline_mysql_thread_create(unsigned int, unsigned long*, pthread_attr_t const*, void* (*)(void*), void*) /data/src/10.10/include/mysql/psi/mysql_thread.h:1139:11
          #4 0x92dcaf in create_thread_to_handle_connection(CONNECT*) /data/src/10.10/sql/mysqld.cc:6029:19
          #5 0x92e5de in create_new_thread(CONNECT*) /data/src/10.10/sql/mysqld.cc:6088:3
          #6 0x92ece6 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /data/src/10.10/sql/mysqld.cc:6150:5
          #7 0x92c6ef in handle_connections_sockets() /data/src/10.10/sql/mysqld.cc:6274:9
          #8 0x9212e8 in mysqld_main(int, char**) /data/src/10.10/sql/mysqld.cc:5924:3
          #9 0x9163a1 in main /data/src/10.10/sql/main.cc:34:10
          #10 0x7f200f31cd09 in __libc_start_main csu/../csu/libc-start.c:308:16
       
      SUMMARY: AddressSanitizer: unknown-crash /data/src/10.10/mysys/crc32/crc32_x86.c:267:11 in crcr32_calc_pclmulqdq
      Shadow bytes around the buggy address:
        0x0c568002dc70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dc90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dca0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dcb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      =>0x0c568002dcc0: 00 00 00 00 00[04]00 00 00 00 00 00 00 00 00 00
        0x0c568002dcd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dce0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dcf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0c568002dd10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      Shadow byte legend (one shadow byte represents 8 application bytes):
        Addressable:           00
        Partially addressable: 01 02 03 04 05 06 07 
        Heap left redzone:       fa
        Freed heap region:       fd
        Stack left redzone:      f1
        Stack mid redzone:       f2
        Stack right redzone:     f3
        Stack after return:      f5
        Stack use after scope:   f8
        Global redzone:          f9
        Global init order:       f6
        Poisoned by user:        f7
        Container overflow:      fc
        Array cookie:            ac
        Intra object redzone:    bb
        ASan internal:           fe
        Left alloca redzone:     ca
        Right alloca redzone:    cb
        Shadow gap:              cc
      ==3849289==ABORTING
      220916 16:49:06 [ERROR] mysqld got signal 6 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed, 
      something is definitely wrong and this may fail.
       
      Server version: 10.10.2-MariaDB-debug-log
      key_buffer_size=1048576
      read_buffer_size=131072
      max_used_connections=1
      max_threads=153
      thread_count=1
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63910 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x62b00017a288
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0x7f1ffbff99a0 thread_stack 0x100000
      mysys/my_addr_resolve.c:299(my_addr_resolve)[0x8a0e8b]
      /mnt8t/bld/10.10-asan-nightly/bin/mariadbd(my_print_stacktrace+0x139)[0x35a3699]
      fil/fil0crypt.cc:969(fil_crypt_start_encrypting_space(fil_space_t*))[0x1a3fe89]
      sigaction.c:0(__restore_rt)[0x7f200f6c9140]
      linux/raise.c:51(__GI_raise)[0x7f200f331ce1]
      stdlib/abort.c:81(__GI_abort)[0x7f200f31b537]
      :0(__sanitizer::Abort())[0x901af7]
      :0(__sanitizer::Die())[0x900471]
      :0(__asan::ScopedInErrorReport::~ScopedInErrorReport())[0x8e7e64]
      :0(__asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool))[0x8e991e]
      ??:0(__asan_report_load_n)[0x8ea6e5]
      crc32_x86.c:0(crcr32_calc_pclmulqdq)[0x3638b3b]
      crc32/crc32_x86.c:333(crc32_pclmul)[0x3638201]
      mysys/crc32ieee.cc:60(my_checksum)[0x3634bcb]
      addr2line: DWARF error: could not find variable specification at offset cc24
      sql/item_strfunc.cc:4501(Item_func_crc32::val_int())[0x1d05c0f]
      sql/item.cc:6842(Item::save_int_in_field(Field*, bool))[0x1b0461e]
      addr2line: DWARF error: could not find variable specification at offset 281d5
      sql/sql_type.cc:4350(Type_handler_int_result::Item_save_in_field(Item*, Field*, bool) const)[0x16edc0f]
      sql/item.cc:6852(Item::save_in_field(Field*, bool))[0x1b048c7]
      addr2line: DWARF error: could not find variable specification at offset 16a4c
      addr2line: DWARF error: could not find variable specification at offset 16b6e
      addr2line: DWARF error: could not find variable specification at offset 16bf8
      addr2line: DWARF error: could not find variable specification at offset 16cb1
      addr2line: DWARF error: could not find variable specification at offset 16d3b
      addr2line: DWARF error: could not find variable specification at offset 16dc5
      addr2line: DWARF error: could not find variable specification at offset 16e4f
      addr2line: DWARF error: could not find variable specification at offset 16f08
      addr2line: DWARF error: could not find variable specification at offset 16f92
      addr2line: DWARF error: could not find variable specification at offset 17021
      addr2line: DWARF error: could not find variable specification at offset 170ab
      addr2line: DWARF error: could not find variable specification at offset 1713a
      addr2line: DWARF error: could not find variable specification at offset 171c9
      addr2line: DWARF error: could not find variable specification at offset 17253
      addr2line: DWARF error: could not find variable specification at offset 172e2
      addr2line: DWARF error: could not find variable specification at offset 17371
      addr2line: DWARF error: could not find variable specification at offset 17400
      addr2line: DWARF error: could not find variable specification at offset 1748a
      addr2line: DWARF error: could not find variable specification at offset 17514
      addr2line: DWARF error: could not find variable specification at offset 175a3
      addr2line: DWARF error: could not find variable specification at offset 1762d
      addr2line: DWARF error: could not find variable specification at offset 176bc
      addr2line: DWARF error: could not find variable specification at offset 1774b
      addr2line: DWARF error: could not find variable specification at offset 177da
      addr2line: DWARF error: could not find variable specification at offset 17869
      addr2line: DWARF error: could not find variable specification at offset 178f3
      addr2line: DWARF error: could not find variable specification at offset 1797d
      addr2line: DWARF error: could not find variable specification at offset 17a0c
      addr2line: DWARF error: could not find variable specification at offset 17a9b
      addr2line: DWARF error: could not find variable specification at offset 17b2a
      addr2line: DWARF error: could not find variable specification at offset 17bb4
      addr2line: DWARF error: could not find variable specification at offset 17c3e
      addr2line: DWARF error: could not find variable specification at offset 17cc8
      addr2line: DWARF error: could not find variable specification at offset 17d52
      addr2line: DWARF error: could not find variable specification at offset 17de1
      addr2line: DWARF error: could not find variable specification at offset 17e70
      addr2line: DWARF error: could not find variable specification at offset 17eff
      addr2line: DWARF error: could not find variable specification at offset 17f8e
      addr2line: DWARF error: could not find variable specification at offset 1801d
      addr2line: DWARF error: could not find variable specification at offset 180ac
      addr2line: DWARF error: could not find variable specification at offset 18136
      addr2line: DWARF error: could not find variable specification at offset 181c0
      addr2line: DWARF error: could not find variable specification at offset 1824a
      addr2line: DWARF error: could not find variable specification at offset 182d9
      addr2line: DWARF error: could not find variable specification at offset 18368
      addr2line: DWARF error: could not find variable specification at offset 183f2
      addr2line: DWARF error: could not find variable specification at offset 184b0
      addr2line: DWARF error: could not find variable specification at offset 1853a
      addr2line: DWARF error: could not find variable specification at offset 185c4
      addr2line: DWARF error: could not find variable specification at offset 18653
      addr2line: DWARF error: could not find variable specification at offset 186e2
      addr2line: DWARF error: could not find variable specification at offset 18771
      addr2line: DWARF error: could not find variable specification at offset 18800
      addr2line: DWARF error: could not find variable specification at offset 1888a
      addr2line: DWARF error: could not find variable specification at offset 2b84b
      addr2line: DWARF error: could not find variable specification at offset 11a7
      addr2line: DWARF error: could not find variable specification at offset 3867
      addr2line: DWARF error: could not find variable specification at offset 399d
      addr2line: DWARF error: could not find variable specification at offset 3ab5
      addr2line: DWARF error: could not find variable specification at offset 3b3a
      addr2line: DWARF error: could not find variable specification at offset 3c5c
      addr2line: DWARF error: could not find variable specification at offset 3ce6
      addr2line: DWARF error: could not find variable specification at offset 3d70
      addr2line: DWARF error: could not find variable specification at offset 3df5
      addr2line: DWARF error: could not find variable specification at offset 3f17
      addr2line: DWARF error: could not find variable specification at offset 3fa1
      addr2line: DWARF error: could not find variable specification at offset 4026
      addr2line: DWARF error: could not find variable specification at offset 40b0
      addr2line: DWARF error: could not find variable specification at offset 4135
      addr2line: DWARF error: could not find variable specification at offset 41bd
      addr2line: DWARF error: could not find variable specification at offset 4247
      addr2line: DWARF error: could not find variable specification at offset 42d1
      addr2line: DWARF error: could not find variable specification at offset 435b
      addr2line: DWARF error: could not find variable specification at offset 43e5
      addr2line: DWARF error: could not find variable specification at offset 446f
      addr2line: DWARF error: could not find variable specification at offset 44fe
      addr2line: DWARF error: could not find variable specification at offset 4588
      addr2line: DWARF error: could not find variable specification at offset 4612
      addr2line: DWARF error: could not find variable specification at offset 46a1
      addr2line: DWARF error: could not find variable specification at offset 4730
      addr2line: DWARF error: could not find variable specification at offset 47bf
      addr2line: DWARF error: could not find variable specification at offset 484e
      addr2line: DWARF error: could not find variable specification at offset 48dd
      addr2line: DWARF error: could not find variable specification at offset 4967
      addr2line: DWARF error: could not find variable specification at offset 4a7a
      addr2line: DWARF error: could not find variable specification at offset 4bab
      addr2line: DWARF error: could not find variable specification at offset 4c3f
      addr2line: DWARF error: could not find variable specification at offset 4cd3
      addr2line: DWARF error: could not find variable specification at offset 4d5d
      addr2line: DWARF error: could not find variable specification at offset 4de7
      addr2line: DWARF error: could not find variable specification at offset 4e76
      addr2line: DWARF error: could not find variable specification at offset 4f05
      addr2line: DWARF error: could not find variable specification at offset 4f94
      addr2line: DWARF error: could not find variable specification at offset 501e
      addr2line: DWARF error: could not find variable specification at offset 50a8
      addr2line: DWARF error: could not find variable specification at offset 5132
      addr2line: DWARF error: could not find variable specification at offset 51bc
      addr2line: DWARF error: could not find variable specification at offset 5246
      addr2line: DWARF error: could not find variable specification at offset 52d5
      addr2line: DWARF error: could not find variable specification at offset 5364
      addr2line: DWARF error: could not find variable specification at offset 53f3
      addr2line: DWARF error: could not find variable specification at offset 5482
      addr2line: DWARF error: could not find variable specification at offset 5511
      addr2line: DWARF error: could not find variable specification at offset 559b
      addr2line: DWARF error: could not find variable specification at offset 562a
      addr2line: DWARF error: could not find variable specification at offset 56b9
      addr2line: DWARF error: could not find variable specification at offset 5748
      addr2line: DWARF error: could not find variable specification at offset 57d2
      addr2line: DWARF error: could not find variable specification at offset 5861
      addr2line: DWARF error: could not find variable specification at offset 58eb
      addr2line: DWARF error: could not find variable specification at offset 5970
      addr2line: DWARF error: could not find variable specification at offset 59fa
      addr2line: DWARF error: could not find variable specification at offset 5a89
      addr2line: DWARF error: could not find variable specification at offset 5b18
      addr2line: DWARF error: could not find variable specification at offset 5ba7
      addr2line: DWARF error: could not find variable specification at offset 5c31
      addr2line: DWARF error: could not find variable specification at offset 5cc0
      addr2line: DWARF error: could not find variable specification at offset 5d4f
      addr2line: DWARF error: could not find variable specification at offset 5dd9
      addr2line: DWARF error: could not find variable specification at offset 5e63
      addr2line: DWARF error: could not find variable specification at offset 5eed
      addr2line: DWARF error: could not find variable specification at offset 5f77
      addr2line: DWARF error: could not find variable specification at offset 6006
      addr2line: DWARF error: could not find variable specification at offset 6095
      addr2line: DWARF error: could not find variable specification at offset 6124
      addr2line: DWARF error: could not find variable specification at offset 61ae
      addr2line: DWARF error: could not find variable specification at offset 6238
      addr2line: DWARF error: could not find variable specification at offset 62c2
      addr2line: DWARF error: could not find variable specification at offset 634c
      addr2line: DWARF error: could not find variable specification at offset 63d6
      addr2line: DWARF error: could not find variable specification at offset 6465
      addr2line: DWARF error: could not find variable specification at offset 64f4
      addr2line: DWARF error: could not find variable specification at offset 657e
      addr2line: DWARF error: could not find variable specification at offset 6608
      addr2line: DWARF error: could not find variable specification at offset 6692
      addr2line: DWARF error: could not find variable specification at offset 6721
      addr2line: DWARF error: could not find variable specification at offset 67b0
      addr2line: DWARF error: could not find variable specification at offset 683f
      addr2line: DWARF error: could not find variable specification at offset 68ce
      addr2line: DWARF error: could not find variable specification at offset 695d
      addr2line: DWARF error: could not find variable specification at offset 69ec
      addr2line: DWARF error: could not find variable specification at offset 6a7b
      addr2line: DWARF error: could not find variable specification at offset 6b0a
      addr2line: DWARF error: could not find variable specification at offset 6b99
      addr2line: DWARF error: could not find variable specification at offset 6c28
      addr2line: DWARF error: could not find variable specification at offset 6cb7
      addr2line: DWARF error: could not find variable specification at offset 6d46
      addr2line: DWARF error: could not find variable specification at offset 6dd5
      addr2line: DWARF error: could not find variable specification at offset 6e64
      addr2line: DWARF error: could not find variable specification at offset 6ef3
      addr2line: DWARF error: could not find variable specification at offset 6f82
      addr2line: DWARF error: could not find variable specification at offset 7011
      addr2line: DWARF error: could not find variable specification at offset 70a0
      addr2line: DWARF error: could not find variable specification at offset 712a
      addr2line: DWARF error: could not find variable specification at offset 71b9
      addr2line: DWARF error: could not find variable specification at offset 7243
      addr2line: DWARF error: could not find variable specification at offset 72cd
      addr2line: DWARF error: could not find variable specification at offset 735c
      addr2line: DWARF error: could not find variable specification at offset 73eb
      addr2line: DWARF error: could not find variable specification at offset 7475
      addr2line: DWARF error: could not find variable specification at offset 74ff
      addr2line: DWARF error: could not find variable specification at offset 758e
      addr2line: DWARF error: could not find variable specification at offset 761d
      addr2line: DWARF error: could not find variable specification at offset 76a7
      addr2line: DWARF error: could not find variable specification at offset 7731
      addr2line: DWARF error: could not find variable specification at offset 780c
      addr2line: DWARF error: could not find variable specification at offset 7895
      addr2line: DWARF error: could not find variable specification at offset 791f
      addr2line: DWARF error: could not find variable specification at offset 79a9
      addr2line: DWARF error: could not find variable specification at offset 7a38
      addr2line: DWARF error: could not find variable specification at offset 7acc
      addr2line: DWARF error: could not find variable specification at offset 7b5b
      addr2line: DWARF error: could not find variable specification at offset 7bea
      addr2line: DWARF error: could not find variable specification at offset 7c79
      addr2line: DWARF error: could not find variable specification at offset 7d03
      addr2line: DWARF error: could not find variable specification at offset 7d8d
      addr2line: DWARF error: could not find variable specification at offset 7e17
      addr2line: DWARF error: could not find variable specification at offset 7ea6
      addr2line: DWARF error: could not find variable specification at offset 7f35
      addr2line: DWARF error: could not find variable specification at offset 7fbf
      addr2line: DWARF error: could not find variable specification at offset 8049
      addr2line: DWARF error: could not find variable specification at offset 80d8
      addr2line: DWARF error: could not find variable specification at offset 8167
      addr2line: DWARF error: could not find variable specification at offset 81ec
      addr2line: DWARF error: could not find variable specification at offset 827b
      addr2line: DWARF error: could not find variable specification at offset 8305
      addr2line: DWARF error: could not find variable specification at offset 8394
      addr2line: DWARF error: could not find variable specification at offset 8428
      addr2line: DWARF error: could not find variable specification at offset 84b7
      addr2line: DWARF error: could not find variable specification at offset 8541
      addr2line: DWARF error: could not find variable specification at offset 85d0
      addr2line: DWARF error: could not find variable specification at offset 865a
      addr2line: DWARF error: could not find variable specification at offset 86d9
      addr2line: DWARF error: could not find variable specification at offset 8763
      addr2line: DWARF error: could not find variable specification at offset 87f7
      addr2line: DWARF error: could not find variable specification at offset 8881
      addr2line: DWARF error: could not find variable specification at offset 8910
      addr2line: DWARF error: could not find variable specification at offset 89eb
      addr2line: DWARF error: could not find variable specification at offset 8a74
      addr2line: DWARF error: could not find variable specification at offset 8afe
      addr2line: DWARF error: could not find variable specification at offset 8b88
      addr2line: DWARF error: could not find variable specification at offset 8c12
      addr2line: DWARF error: could not find variable specification at offset 8ca1
      addr2line: DWARF error: could not find variable specification at offset 8d2b
      addr2line: DWARF error: could not find variable specification at offset 8dba
      addr2line: DWARF error: could not find variable specification at offset 8e44
      addr2line: DWARF error: could not find variable specification at offset 8ece
      addr2line: DWARF error: could not find variable specification at offset 8f58
      addr2line: DWARF error: could not find variable specification at offset 8fe2
      addr2line: DWARF error: could not find variable specification at offset 906c
      addr2line: DWARF error: could not find variable specification at offset 90f6
      addr2line: DWARF error: could not find variable specification at offset 9185
      addr2line: DWARF error: could not find variable specification at offset 9214
      addr2line: DWARF error: could not find variable specification at offset 92a8
      addr2line: DWARF error: could not find variable specification at offset 9337
      addr2line: DWARF error: could not find variable specification at offset 93c6
      addr2line: DWARF error: could not find variable specification at offset 9450
      addr2line: DWARF error: could not find variable specification at offset 94df
      addr2line: DWARF error: could not find variable specification at offset 9569
      addr2line: DWARF error: could not find variable specification at offset 95f8
      addr2line: DWARF error: could not find variable specification at offset 9682
      addr2line: DWARF error: could not find variable specification at offset 9711
      addr2line: DWARF error: could not find variable specification at offset 979b
      addr2line: DWARF error: could not find variable specification at offset 9825
      addr2line: DWARF error: could not find variable specification at offset 98af
      addr2line: DWARF error: could not find variable specification at offset 9939
      addr2line: DWARF error: could not find variable specification at offset 99c3
      addr2line: DWARF error: could not find variable specification at offset 9a4d
      addr2line: DWARF error: could not find variable specification at offset 9adc
      addr2line: DWARF error: could not find variable specification at offset 9b61
      addr2line: DWARF error: could not find variable specification at offset 9cbb
      addr2line: DWARF error: could not find variable specification at offset 9d45
      addr2line: DWARF error: could not find variable specification at offset 9dcf
      addr2line: DWARF error: could not find variable specification at offset 9e54
      addr2line: DWARF error: could not find variable specification at offset 9ed9
      addr2line: DWARF error: could not find variable specification at offset 9f68
      addr2line: DWARF error: could not find variable specification at offset 9ff7
      addr2line: DWARF error: could not find variable specification at offset a08b
      addr2line: DWARF error: could not find variable specification at offset 5d09
      addr2line: DWARF error: could not find variable specification at offset 1401
      addr2line: DWARF error: could not find variable specification at offset e3a9
      sql/item.h:3452(Item_result_field::save_in_result_field(bool))[0xa2242e]
      sql/sql_select.cc:26984(copy_funcs(Item**, THD const*))[0x10b0420]
      sql/item_sum.cc:4163(Item_func_group_concat::add(bool))[0x1e7f64e]
      sql/item_sum.h:2043(Item_func_group_concat::add())[0x1653682]
      sql/item_sum.h:720(Aggregator_simple::add())[0x1e886ef]
      sql/item_sum.h:564(Item_sum::aggregator_add())[0xa324df]
      sql/item_sum.h:445(Item_sum::reset_and_add())[0xa21505]
      sql/sql_select.cc:26929(init_sum_functions(Item_sum**, Item_sum**))[0x10af5bf]
      sql/sql_select.cc:23219(end_send_group(JOIN*, st_join_table*, bool))[0x10a4715]
      sql/sql_select.cc:21993(evaluate_join_record(JOIN*, st_join_table*, int))[0x10a7b58]
      sql/sql_select.cc:21763(sub_select(JOIN*, st_join_table*, bool))[0xfaa827]
      sql/sql_select.cc:21308(do_select(JOIN*, Procedure*))[0x103c436]
      sql/sql_select.cc:4812(JOIN::exec_inner())[0x10388ff]
      sql/sql_select.cc:4590(JOIN::exec())[0x1034cd7]
      sql/sql_select.cc:5070(mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0xfaceca]
      sql/sql_select.cc:581(handle_select(THD*, LEX*, select_result*, unsigned long))[0xfabac3]
      sql/sql_parse.cc:6261(execute_sqlcom_select(THD*, TABLE_LIST*))[0xe7d398]
      sql/sql_parse.cc:3945(mysql_execute_command(THD*, bool))[0xe60e5e]
      sql/sql_parse.cc:8035(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0xe47c43]
      sql/sql_parse.cc:1894(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0xe409b8]
      sql/sql_parse.cc:1407(do_command(THD*, bool))[0xe4aa10]
      sql/sql_connect.cc:1416(do_handle_one_connection(CONNECT*, bool))[0x14859d7]
      sql/sql_connect.cc:1320(handle_one_connection)[0x1485114]
      perfschema/pfs.cc:2201(pfs_spawn_thread)[0x2584578]
      nptl/pthread_create.c:478(start_thread)[0x7f200f6bdea7]
      x86_64/clone.S:97(__GI___clone)[0x7f200f3f3def]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x6290001092a8): SELECT GROUP_CONCAT(CRC32(b)) FROM t GROUP BY IF(id, 1, '')
       
      Connection ID (thread ID): 4
      Status: NOT_KILLED
       
      Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off
       
      The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains
      information that should help you find out what is causing the crash.
      Writing a core file...
      Working directory at /dev/shm/var_auto_tm2H/mysqld.1/data
      Resource Limits:
      Limit                     Soft Limit           Hard Limit           Units     
      Max cpu time              unlimited            unlimited            seconds   
      Max file size             unlimited            unlimited            bytes     
      Max data size             unlimited            unlimited            bytes     
      Max stack size            8388608              unlimited            bytes     
      Max core file size        unlimited            unlimited            bytes     
      Max resident set          unlimited            unlimited            bytes     
      Max processes             385885               385885               processes 
      Max open files            1024                 1024                 files     
      Max locked memory         12659514368          12659514368          bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       385885               385885               signals   
      Max msgqueue size         819200               819200               bytes     
      Max nice priority         0                    0                    
      Max realtime priority     0                    0                    
      Max realtime timeout      unlimited            unlimited            us        
      Core pattern: core
       
      Kernel version: Linux version 5.10.0-14-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Debian 5.10.113-1 (2022-04-29)
      

      10.3 32bab2ce debug

      GROUP_CONCAT(CRC32(b))
      4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234,4098726234...
      

      10.3 32bab2ce non-debug

      GROUP_CONCAT(CRC32(b))
      0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,0,3468525685,0,0,2761715016,0,0,0,0,2307472468,0,0,0,0,0,0,0,0,0,3468525685
      

      10.4 e4043152

      GROUP_CONCAT(CRC32(b))
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     

      The crash is reproducible on 10.4+ (maybe it's just the matter of luck that it doesn't happen elsewhere).
      The garbage results can be observed even on 10.2.

      Without innodb persistent stats, or with MyISAM/Aria, there is no crash, and any build produces a list of zeros as expected.

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            Assignee:
            sanja Oleksandr Byelkin
            Reporter:
            elenst Elena Stepanova
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

              Dates

              Created:
              Updated:

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