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  1. MariaDB Server
  2. MDEV-23841

Warning: Memory not freed, LeakSanitizer: detected memory leaks in innodb_monitor_validate

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      --source include/have_innodb.inc
       
      --error ER_WRONG_VALUE_FOR_VAR
      SET GLOBAL innodb_monitor_reset_all= '%', innodb_compression_algorithm= foo;
      

      10.5 080522dc ASAN non-debug

      2020-09-29 14:20:40 0 [Note] /data/bld/10.5-rel-asan-nightly/bin/mariadbd: Shutdown complete
       
      Warning: Memory not freed: 32
       
      =================================================================
      ==2843902==ERROR: LeakSanitizer: detected memory leaks
       
      Direct leak of 32 byte(s) in 1 object(s) allocated from:
          #0 0x7f3944b01bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
          #1 0x562a14886463 in my_malloc /data/src/10.5/mysys/my_malloc.c:88
          #2 0x562a148869f2 in my_strdup /data/src/10.5/mysys/my_malloc.c:231
          #3 0x562a13f59d4f in innodb_monitor_validate /data/src/10.5/storage/innobase/handler/ha_innodb.cc:17827
          #4 0x562a12e1c242 in sys_var_pluginvar::do_check(THD*, set_var*) /data/src/10.5/sql/sql_plugin.cc:3546
          #5 0x562a12b9e851 in sys_var::check(THD*, set_var*) /data/src/10.5/sql/set_var.cc:246
          #6 0x562a12ba2134 in set_var::check(THD*) /data/src/10.5/sql/set_var.cc:811
          #7 0x562a12ba313e in sql_set_variables(THD*, List<set_var_base>*, bool) /data/src/10.5/sql/set_var.cc:739
          #8 0x562a12e11af5 in mysql_execute_command(THD*) /data/src/10.5/sql/sql_parse.cc:5009
          #9 0x562a12dd3b1c in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.5/sql/sql_parse.cc:7994
          #10 0x562a12dffce0 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.5/sql/sql_parse.cc:1867
          #11 0x562a12e05ac4 in do_command(THD*) /data/src/10.5/sql/sql_parse.cc:1348
          #12 0x562a1319fd2c in do_handle_one_connection(CONNECT*, bool) /data/src/10.5/sql/sql_connect.cc:1410
          #13 0x562a131a08ac in handle_one_connection /data/src/10.5/sql/sql_connect.cc:1312
          #14 0x562a13d81648 in pfs_spawn_thread /data/src/10.5/storage/perfschema/pfs.cc:2201
          #15 0x7f394497e608 in start_thread /build/glibc-ZN95T4/glibc-2.31/nptl/pthread_create.c:477
       
      SUMMARY: AddressSanitizer: 32 byte(s) leaked in 1 allocation(s).
      

      10.5 080522dc ASAN debug

      Warning: Memory not freed: 32
      Warning:   32 bytes lost at 0x60e000044ad0, allocated by T@0 at 0x55b0b289a69d, mysys/my_malloc.c:88, mysys/my_malloc.c:231, handler/ha_innodb.cc:17827, sql/sql_plugin.cc:3546, sql/set_var.cc:246, sql/set_var.cc:739, sql/sql_parse.cc:5009
      Memory lost: 32 bytes in 1 chunks
      Warning:   32 bytes lost at 0x60e000044ad0, allocated by T@0 at mysys/my_malloc.c:88, mysys/my_malloc.c:231, handler/ha_innodb.cc:17827, sql/sql_plugin.cc:3546, sql/set_var.cc:246, sql/set_var.cc:811, sql/set_var.cc:739, sql/sql_parse.cc:5009
      Memory lost: 32 bytes in 1 chunks
      

      10.2 84261653 Valgrind

      Warning: Memory not freed: 16
      ==2844360== 16 bytes in 1 blocks are definitely lost in loss record 1 of 2
      ==2844360==    at 0x483B7F3: malloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
      ==2844360==    by 0x1180925: my_malloc (my_malloc.c:101)
      ==2844360==    by 0x1181024: my_strdup (my_malloc.c:241)
      ==2844360==    by 0xBBBFAD: innodb_monitor_validate(THD*, st_mysql_sys_var*, void*, st_mysql_value*) (ha_innodb.cc:18655)
      ==2844360==    by 0x71F62F: sys_var_pluginvar::do_check(THD*, set_var*) (sql_plugin.cc:3452)
      ==2844360==    by 0x62BFCC: sys_var::check(THD*, set_var*) (set_var.cc:248)
      ==2844360==    by 0x62D9D1: set_var::check(THD*) (set_var.cc:789)
      ==2844360==    by 0x62D6B2: sql_set_variables(THD*, List<set_var_base>*, bool) (set_var.cc:731)
      ==2844360==    by 0x70467D: mysql_execute_command(THD*) (sql_parse.cc:4583)
      ==2844360==    by 0x70E550: mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) (sql_parse.cc:7733)
      ==2844360==    by 0x6FC85F: dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) (sql_parse.cc:1823)
      ==2844360==    by 0x6FB35A: do_command(THD*) (sql_parse.cc:1377)
      ==2844360==    by 0x85AA12: do_handle_one_connection(CONNECT*) (sql_connect.cc:1336)
      ==2844360==    by 0x85A777: handle_one_connection (sql_connect.cc:1241)
      ==2844360==    by 0x10CDE41: pfs_spawn_thread (pfs.cc:1869)
      ==2844360==    by 0x4941608: start_thread (pthread_create.c:477)
      

      Reproducible on 10.1-10.5, with different verbosity of the final diagnostics.

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            Assignee:
            marko Marko Mäkelä
            Reporter:
            elenst Elena Stepanova
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              Updated:

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