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  1. MariaDB Server
  2. MDEV-26494

main.mysqlcheck fails on ARM with ASAN use-after-poison in my_mb_wc_filename

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      build on ARM

      cmake -DPLUGIN_CONNECT=NO -DPLUGIN_COLUMNSTORE=NO -DPLUGIN_MROONGA=NO -DPLUGIN_XPAND=NO -DPLUGIN_TOKUDB=NO -DWITH_SSL=bundled -DMYSQL_MAINTAINER_MODE=OFF -DWITH_ASAN=YES -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_FLAGS=-fno-omit-frame-pointer -DCMAKE_CXX_FLAGS=-fno-omit-frame-pointer -DWITH_PCRE=bundled
      

      perl ./mtr main.mysqlcheck
      

      10.6 7271cf48d6

      ==22713==ERROR: AddressSanitizer: use-after-poison on address 0xffff6f7324ac at pc 0xaaaab014af4c bp 0xffff6d6f8870 sp 0xffff6d6f8890
      READ of size 1 at 0xffff6f7324ac thread T13
          #0 0xaaaab014af48 in my_mb_wc_filename /home/buildbot/10.6/strings/ctype-utf8.c:6968
          #1 0xaaaaae3fc948 in strconvert(charset_info_st const*, char const*, unsigned long, charset_info_st const*, char*, unsigned long, unsigned int*) /home/buildbot/10.6/sql/strfunc.cc:288
          #2 0xaaaaae3149c0 in filename_to_tablename(char const*, char*, unsigned long, bool) /home/buildbot/10.6/sql/sql_table.cc:398
          #3 0xaaaaae9713a4 in Discovered_table_list::add_file(char const*) /home/buildbot/10.6/sql/handler.cc:6387
          #4 0xaaaaae260490 in find_files /home/buildbot/10.6/sql/sql_show.cc:980
          #5 0xaaaaae278a6c in make_db_list /home/buildbot/10.6/sql/sql_show.cc:4368
          #6 0xaaaaae27d1f4 in get_all_tables(THD*, TABLE_LIST*, Item*) /home/buildbot/10.6/sql/sql_show.cc:5219
          #7 0xaaaaae2af4b0 in get_schema_tables_result(JOIN*, enum_schema_table_state) /home/buildbot/10.6/sql/sql_show.cc:8837
          #8 0xaaaaae17b788 in JOIN::exec_inner() /home/buildbot/10.6/sql/sql_select.cc:4694
          #9 0xaaaaae17961c in JOIN::exec() /home/buildbot/10.6/sql/sql_select.cc:4515
          #10 0xaaaaae17d91c 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*) /home/buildbot/10.6/sql/sql_select.cc:4993
          #11 0xaaaaae14e8f4 in handle_select(THD*, LEX*, select_result*, unsigned long) /home/buildbot/10.6/sql/sql_select.cc:545
          #12 0xaaaaae0a9110 in execute_sqlcom_select /home/buildbot/10.6/sql/sql_parse.cc:6256
          #13 0xaaaaae0972dc in mysql_execute_command(THD*, bool) /home/buildbot/10.6/sql/sql_parse.cc:3946
          #14 0xaaaaae0b403c in mysql_parse(THD*, char*, unsigned int, Parser_state*) /home/buildbot/10.6/sql/sql_parse.cc:8030
          #15 0xaaaaae0893c0 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /home/buildbot/10.6/sql/sql_parse.cc:1896
          #16 0xaaaaae085e9c in do_command(THD*, bool) /home/buildbot/10.6/sql/sql_parse.cc:1404
          #17 0xaaaaae5174e0 in do_handle_one_connection(CONNECT*, bool) /home/buildbot/10.6/sql/sql_connect.cc:1418
          #18 0xaaaaae516cf4 in handle_one_connection /home/buildbot/10.6/sql/sql_connect.cc:1312
          #19 0xaaaaaf339400 in pfs_spawn_thread /home/buildbot/10.6/storage/perfschema/pfs.cc:2201
          #20 0xffff82ace4f8 in start_thread (/lib/aarch64-linux-gnu/libpthread.so.0+0x84f8)
          #21 0xffff8275e678  (/lib/aarch64-linux-gnu/libc.so.6+0xd4678)
       
      0xffff6f7324ac is located 172 bytes inside of 32932-byte region [0xffff6f732400,0xffff6f73a4a4)
      allocated by thread T13 here:
          #0 0xffff82daaa30 in __interceptor_malloc (/lib/aarch64-linux-gnu/libasan.so.5+0xeda30)
          #1 0xaaaab006ddf0 in sf_malloc /home/buildbot/10.6/mysys/safemalloc.c:126
          #2 0xaaaab0034448 in my_malloc /home/buildbot/10.6/mysys/my_malloc.c:90
          #3 0xaaaab000663c in init_alloc_root /home/buildbot/10.6/mysys/my_alloc.c:81
          #4 0xaaaab0032378 in my_dir /home/buildbot/10.6/mysys/my_lib.c:140
          #5 0xaaaaae26016c in find_files /home/buildbot/10.6/sql/sql_show.cc:944
          #6 0xaaaaae278a6c in make_db_list /home/buildbot/10.6/sql/sql_show.cc:4368
          #7 0xaaaaae27d1f4 in get_all_tables(THD*, TABLE_LIST*, Item*) /home/buildbot/10.6/sql/sql_show.cc:5219
          #8 0xaaaaae2af4b0 in get_schema_tables_result(JOIN*, enum_schema_table_state) /home/buildbot/10.6/sql/sql_show.cc:8837
          #9 0xaaaaae17b788 in JOIN::exec_inner() /home/buildbot/10.6/sql/sql_select.cc:4694
          #10 0xaaaaae17961c in JOIN::exec() /home/buildbot/10.6/sql/sql_select.cc:4515
          #11 0xaaaaae17d91c 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*) /home/buildbot/10.6/sql/sql_select.cc:4993
          #12 0xaaaaae14e8f4 in handle_select(THD*, LEX*, select_result*, unsigned long) /home/buildbot/10.6/sql/sql_select.cc:545
          #13 0xaaaaae0a9110 in execute_sqlcom_select /home/buildbot/10.6/sql/sql_parse.cc:6256
          #14 0xaaaaae0972dc in mysql_execute_command(THD*, bool) /home/buildbot/10.6/sql/sql_parse.cc:3946
          #15 0xaaaaae0b403c in mysql_parse(THD*, char*, unsigned int, Parser_state*) /home/buildbot/10.6/sql/sql_parse.cc:8030
          #16 0xaaaaae0893c0 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /home/buildbot/10.6/sql/sql_parse.cc:1896
          #17 0xaaaaae085e9c in do_command(THD*, bool) /home/buildbot/10.6/sql/sql_parse.cc:1404
          #18 0xaaaaae5174e0 in do_handle_one_connection(CONNECT*, bool) /home/buildbot/10.6/sql/sql_connect.cc:1418
          #19 0xaaaaae516cf4 in handle_one_connection /home/buildbot/10.6/sql/sql_connect.cc:1312
          #20 0xaaaaaf339400 in pfs_spawn_thread /home/buildbot/10.6/storage/perfschema/pfs.cc:2201
          #21 0xffff82ace4f8 in start_thread (/lib/aarch64-linux-gnu/libpthread.so.0+0x84f8)
          #22 0xffff8275e678  (/lib/aarch64-linux-gnu/libc.so.6+0xd4678)
       
      Thread T13 created by T0 here:
          #0 0xffff82cfaa9c in pthread_create (/lib/aarch64-linux-gnu/libasan.so.5+0x3da9c)
          #1 0xaaaaaf333ba0 in my_thread_create /home/buildbot/10.6/storage/perfschema/my_thread.h:48
          #2 0xaaaaaf339868 in pfs_spawn_thread_v1 /home/buildbot/10.6/storage/perfschema/pfs.cc:2252
          #3 0xaaaaadd4a278 in inline_mysql_thread_create /home/buildbot/10.6/include/mysql/psi/mysql_thread.h:1139
          #4 0xaaaaadd62fa4 in create_thread_to_handle_connection(CONNECT*) /home/buildbot/10.6/sql/mysqld.cc:5922
          #5 0xaaaaadd635cc in create_new_thread(CONNECT*) /home/buildbot/10.6/sql/mysqld.cc:5981
          #6 0xaaaaadd63960 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /home/buildbot/10.6/sql/mysqld.cc:6043
          #7 0xaaaaadd64348 in handle_connections_sockets() /home/buildbot/10.6/sql/mysqld.cc:6167
          #8 0xaaaaadd6279c in mysqld_main(int, char**) /home/buildbot/10.6/sql/mysqld.cc:5817
          #9 0xaaaaadd494b4 in main /home/buildbot/10.6/sql/main.cc:34
          #10 0xffff826ae08c in __libc_start_main (/lib/aarch64-linux-gnu/libc.so.6+0x2408c)
          #11 0xaaaaadd493c4  (/home/buildbot/10.6/sql/mariadbd+0x17e23c4)
       
      SUMMARY: AddressSanitizer: use-after-poison /home/buildbot/10.6/strings/ctype-utf8.c:6968 in my_mb_wc_filename
      Shadow bytes around the buggy address:
        0x200fedee6440: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
        0x200fedee6450: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
        0x200fedee6460: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
        0x200fedee6470: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
        0x200fedee6480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      =>0x200fedee6490: 00 00 00 00 f7[04]f7 00 00 00 00 00 00 00 00 00
        0x200fedee64a0: 00 00 00 00 00 00 00 f7 00 00 02 f7 00 00 00 00
        0x200fedee64b0: 00 00 00 00 00 00 00 00 00 00 00 00 f7 00 00 01
        0x200fedee64c0: f7 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x200fedee64d0: 00 f7 07 f7 00 00 00 00 00 00 00 00 00 00 00 00
        0x200fedee64e0: 00 00 00 00 f7 06 f7 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
      ==22713==ABORTING
      210829 12:31:44 [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: 10.6.5-MariaDB-debug-log
      key_buffer_size=1048576
      read_buffer_size=131072
      max_used_connections=2
      max_threads=153
      thread_count=2
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63872 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0xffff7338c288
      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 = 0xffff6d6fc7c0 thread_stack 0x100000
      ??:0(clock_getres)[0xffff82d260e8]
      mysys/stacktrace.c:212(my_print_stacktrace)[0xaaaab0049264]
      sql/signal_handler.cc:225(handle_fatal_signal)[0xaaaaae936ef8]
      addr2line: 'linux-vdso.so.1': No such file
      linux-vdso.so.1(__kernel_rt_sigreturn+0x0)[0xffff837e95b0]
      ??:0(gsignal)[0xffff826c1138]
      ??:0(abort)[0xffff826add68]
      ??:0(__sanitizer_set_report_fd)[0xffff82dc81e0]
      ??:0(__sanitizer_get_module_and_offset_for_pc)[0xffff82dd29e8]
      ??:0(__sanitizer_ptr_cmp)[0xffff82db3fc4]
      ??:0(__asan_on_error)[0xffff82db3a18]
      ??:0(__asan_report_load1)[0xffff82db45a0]
      strings/ctype-utf8.c:6968(my_mb_wc_filename)[0xaaaab014af4c]
      sql/strfunc.cc:288(strconvert(charset_info_st const*, char const*, unsigned long, charset_info_st const*, char*, unsigned long, unsigned int*))[0xaaaaae3fc94c]
      sql/sql_table.cc:398(filename_to_tablename(char const*, char*, unsigned long, bool))[0xaaaaae3149c4]
      sql/handler.cc:6387(Discovered_table_list::add_file(char const*))[0xaaaaae9713a8]
      sql/sql_show.cc:980(find_files(THD*, Dynamic_array<st_mysql_const_lex_string*>*, st_mysql_const_lex_string*, char const*, st_mysql_const_lex_string const*))[0xaaaaae260494]
      sql/sql_show.cc:4369(make_db_list(THD*, Dynamic_array<st_mysql_const_lex_string*>*, st_lookup_field_values*))[0xaaaaae278a70]
      sql/sql_show.cc:5219(get_all_tables(THD*, TABLE_LIST*, Item*))[0xaaaaae27d1f8]
      sql/sql_show.cc:8837(get_schema_tables_result(JOIN*, enum_schema_table_state))[0xaaaaae2af4b4]
      sql/sql_select.cc:4694(JOIN::exec_inner())[0xaaaaae17b78c]
      sql/sql_select.cc:4516(JOIN::exec())[0xaaaaae179620]
      sql/sql_select.cc:4995(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*))[0xaaaaae17d920]
      sql/sql_select.cc:545(handle_select(THD*, LEX*, select_result*, unsigned long))[0xaaaaae14e8f8]
      sql/sql_parse.cc:6256(execute_sqlcom_select(THD*, TABLE_LIST*))[0xaaaaae0a9114]
      sql/sql_parse.cc:3946(mysql_execute_command(THD*, bool))[0xaaaaae0972e0]
      sql/sql_parse.cc:8030(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0xaaaaae0b4040]
      sql/sql_parse.cc:1898(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0xaaaaae0893c4]
      sql/sql_parse.cc:1404(do_command(THD*, bool))[0xaaaaae085ea0]
      sql/sql_connect.cc:1418(do_handle_one_connection(CONNECT*, bool))[0xaaaaae5174e4]
      sql/sql_connect.cc:1314(handle_one_connection)[0xaaaaae516cf8]
      perfschema/pfs.cc:2203(pfs_spawn_thread)[0xaaaaaf339404]
      ??:0(start_thread)[0xffff82ace4fc]
      ??:0(clone)[0xffff8275e67c]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0xffff733932a8): SELECT * FROM INFORMATION_SCHEMA.TRIGGERS
      WHERE TRIGGER_SCHEMA="#mysql50#a@b" ORDER BY trigger_name
       
      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_kCEo/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        0                    0                    bytes     
      Max resident set          unlimited            unlimited            bytes     
      Max processes             15222                15222                processes 
      Max open files            1024                 1024                 files     
      Max locked memory         67108864             67108864             bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       15222                15222                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: |/usr/share/apport/apport %p %s %c %d %P %E
      

      Reproducible on all ARMs that I tried, different Linux versions and compilers.
      Couldn't reproduce on x86_64.

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            danblack Daniel Black
            elenst Elena Stepanova
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              Updated:
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