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  1. MariaDB Server
  2. MDEV-4286

Server crashes in Protocol_text::store, stack smashing detected

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 5.3.12
    • 5.3.13
    • None
    • None

    Description

      The root cause of the problem might exist in 5.5 and 10.0 too, but I am not getting a crash there, no valgrind errors either, and query results seem to be reasonable (shown at the end of the description).

      CREATE TABLE t1 (i INT, d DATE) ENGINE=MyISAM;
      		 
      INSERT INTO t1 VALUES (1, '2008-10-02'), (2, '2010-12-12');
      		 
      SELECT d, AVG( EXPORT_SET( 13, 'Y', ( SHA( i ) ) ) ), GROUP_CONCAT( d ) 
      FROM t1 GROUP BY d ORDER BY i;

      Stack trace on 5.3 (although not very helpful):

      #5  <signal handler called>
      		 
      #6  0x00007f191a4fd066 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1
      		 
      #7  0x00007f191a4fdd7d in _Unwind_Backtrace () from /lib/x86_64-linux-gnu/libgcc_s.so.1
      		 
      #8  0x00007f191a80e9c8 in __GI___backtrace (array=<optimized out>, size=64) at ../sysdeps/x86_64/../ia64/backtrace.c:110
      		 
      #9  0x00007f191a7783af in __libc_message (do_abort=2, fmt=0x7f191a87fe3f "*** %s ***: %s terminated\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:180
      		 
      #10 0x00007f191a80e807 in __GI___fortify_fail (msg=0x7f191a87fe27 "stack smashing detected") at fortify_fail.c:32
      		 
      #11 0x00007f191a80e7d0 in __stack_chk_fail () at stack_chk_fail.c:29
      		 
      #12 0x000000000066c629 in Protocol_text::store (this=0x38979b8, field=0x7f18b4018928) at protocol.cc:1095
      		 
      #13 0x2020202020202020 in ?? ()
      		 
      #14 0x2020202020202020 in ?? ()
      		 
      #15 0x2020202020202020 in ?? ()
      		 
      #16 0x2020202020202020 in ?? ()
      		 
      #17 0x2020202020202020 in ?? ()
      		 
      #18 0x2020202020202020 in ?? ()
      		 
      ...
      		 
      #243 0x000000000389a188 in ?? ()
      		 
      #244 0x0000000000000000 in ?? ()
      		 

      revision-id: igor@askmonty.org-20130308082526-5w0b7gya5ed97uzo
      		 
      revno: 3635
      		 
      branch-nick: 5.3

      Reproducible on older revisions, too.

      Built with BUILD/compile-pentium-valgrind-max-no-ndb; was also reproducible with BUILD/compile-pentium-debug-max-no-ndb.
      I tried 3 different machines, 2 Ubuntus and Gentoo, got the crash on each of them.

      Results on 5.5 (I don't see a problem here):

      INSERT INTO t1 VALUES (1, '2008-10-02'), (2, '2010-12-12');
      		 
      SELECT d, AVG( EXPORT_SET( 13, 'Y', ( SHA( i ) ) ) ), GROUP_CONCAT( d ) 
      FROM t1 GROUP BY d ORDER BY i;
      		 
      d	AVG( EXPORT_SET( 13, 'Y', ( SHA( i ) ) ) )	GROUP_CONCAT( d )
      		 
      2008-10-02	0	2008-10-02
      		 
      2010-12-12	0	2010-12-12

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            serg Sergei Golubchik
            elenst Elena Stepanova
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            Dates

              Created:
              Updated:
              Resolved:

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