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  1. MariaDB Server
  2. MDEV-9991

main.mysql_client_test_nonblock stack corruption with HAVE_BACKTRACE

    Details

    • Sprint:
      5.5.50

      Description

      Compile script:

      cmake -DCMAKE_BUILD_TYPE=Debug -DMYSQL_MAINTAINER_MODE=ON -DNOT_FOR_DISTRIBUTION=ON -DWITH_EMBEDDED_SERVER=ON ../mariadb && make
      

      Test output:

      ./mtr mysql_client_test_nonblock
      Logging: /home/svoj/devel/maria/mariadb/mysql-test/mysql-test-run.pl  mysql_client_test_nonblock
      vardir: /home/svoj/devel/maria/debug/mysql-test/var
      Checking leftover processes...
      Removing old var directory...
      Creating var directory '/home/svoj/devel/maria/debug/mysql-test/var'...
      Checking supported features...
      MariaDB Version 5.5.50-MariaDB-debug
      Installing system database...
       - skipping SSL, mysqld not compiled with SSL
       - binaries are debug compiled
      Collecting tests...
       
      ==============================================================================
       
      TEST                                      RESULT   TIME (ms) or COMMENT
      --------------------------------------------------------------------------
       
      worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019
      main.mysql_client_test_nonblock          [ fail ]
              Test ended at 2016-04-26 12:24:37
       
      CURRENT_TEST: main.mysql_client_test_nonblock
      mysqltest: At line 17: exec of '/home/svoj/devel/maria/debug/tests/mysql_client_test --defaults-file=/home/svoj/devel/maria/debug/mysql-test/var/my.cnf --testcase --vardir=/home/svoj/devel/maria/debug/mysql-test/var --non-blocking-api --getopt-ll-test=25600M >> /home/svoj/devel/maria/debug/mysql-test/var/log/mysql_client_test.out.log 2>&1' failed, error: 35584, status: 139, errno: 0
      Output from before failure:
      SET @old_slow_query_log= @@global.slow_query_log;
       
       
       
      The result from queries just before the failure was:
      SET @old_general_log= @@global.general_log;
      SET @old_slow_query_log= @@global.slow_query_log;
      

      GDB session:

      $ gdb tests/mysql_client_test
      GNU gdb (Ubuntu 7.10-1ubuntu2) 7.10
      Copyright (C) 2015 Free Software Foundation, Inc.
      License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
      This is free software: you are free to change and redistribute it.
      There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
      and "show warranty" for details.
      This GDB was configured as "x86_64-linux-gnu".
      Type "show configuration" for configuration details.
      For bug reporting instructions, please see:
      <http://www.gnu.org/software/gdb/bugs/>.
      Find the GDB manual and other documentation resources online at:
      <http://www.gnu.org/software/gdb/documentation/>.
      For help, type "help".
      Type "apropos word" to search for commands related to "word"...
      Reading symbols from tests/mysql_client_test...done.
      (gdb) b my_context_spawn
      Breakpoint 1 at 0x4b6230: file /home/svoj/devel/maria/mariadb/mysys/my_context.c, line 194.
      (gdb) r --defaults-file=/home/svoj/devel/maria/debug/mysql-test/var/my.cnf --testcase --vardir=/home/svoj/devel/maria/debug/mysql-test/var --non-blocking-api --getopt-ll-test=25600M
      Starting program: /home/svoj/devel/maria/debug/tests/mysql_client_test --defaults-file=/home/svoj/devel/maria/debug/mysql-test/var/my.cnf --testcase --vardir=/home/svoj/devel/maria/debug/mysql-test/var --non-blocking-api --getopt-ll-test=25600M
      [Thread debugging using libthread_db enabled]
      Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
      [New Thread 0x7ffff6b7b700 (LWP 3818)]
      [Thread 0x7ffff6b7b700 (LWP 3818) exited]
       
       
      #####################################
      client_connect
      #####################################
       
       
      Breakpoint 1, my_context_spawn (c=0x987f48, f=0x478b5f <mysql_real_connect_start_internal>, d=0x7fffffffe0f0) at /home/svoj/devel/maria/mariadb/mysys/my_context.c:194
      194       DBUG_SWAP_CODE_STATE(&c->dbug_state);
      (gdb) n
      251          : [stack] "a" (c->stack_top),
      (gdb)
      253            [save] "b" (&c->save[0])
      (gdb)
      205       __asm__ __volatile__
      (gdb)
       
      Program received signal SIGSEGV, Segmentation fault.
      0x00007ffff6b8acf9 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1
      (gdb) bt
      #0  0x00007ffff6b8acf9 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1
      #1  0x00007ffff6b8c618 in _Unwind_Backtrace () from /lib/x86_64-linux-gnu/libgcc_s.so.1
      #2  0x00007ffff6ea85f6 in __GI___backtrace (array=<optimized out>, size=10) at ../sysdeps/x86_64/backtrace.c:109
      #3  0x00000000004b671e in sf_malloc (size=7) at /home/svoj/devel/maria/mariadb/mysys/safemalloc.c:126
      #4  0x00000000004a41d0 in my_malloc (size=7, my_flags=16) at /home/svoj/devel/maria/mariadb/mysys/my_malloc.c:41
      #5  0x00000000004a469b in my_strdup (from=0x4e6cb6 "latin1", my_flags=16) at /home/svoj/devel/maria/mariadb/mysys/my_malloc.c:141
      #6  0x0000000000481456 in mysql_init_character_set (mysql=0x9879b0) at /home/svoj/devel/maria/mariadb/sql-common/client.c:2306
      #7  0x0000000000483d99 in mysql_real_connect (mysql=0x9879b0, host=0x4e7274 "localhost", user=0x983e07 "root", passwd=0x983f90 "", db=0x4ccaf3 "test", port=16000,
          unix_socket=0x983e29 "/home/svoj/devel/maria/debug/mysql-test/var/tmp/mysqld.1.sock", client_flag=0) at /home/svoj/devel/maria/mariadb/sql-common/client.c:3451
      #8  0x0000000000478bd6 in mysql_real_connect_start_internal (d=0x7fffffffe0f0) at /home/svoj/devel/maria/mariadb/sql-common/mysql_async.c:411
      #9  0x00000000004b6290 in my_context_spawn (c=0x0, f=0x5, d=0x7ffff7de89ed <_dl_fixup+237>) at /home/svoj/devel/maria/mariadb/mysys/my_context.c:205
      #10 0x00000000004a4030 in my_thread_var_dbug () at /home/svoj/devel/maria/mariadb/mysys/my_thr_init.c:464
      Backtrace stopped: previous frame inner to this frame (corrupt stack?)
      (gdb)
      

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            • Assignee:
              svoj Sergey Vojtovich
              Reporter:
              svoj Sergey Vojtovich
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              • Created:
                Updated:
                Resolved: