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  1. MariaDB Server
  2. MDEV-22709

Assertion `store.length() <= (256L*256L*256L-1)' failed in net_send_ok

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      SET SESSION session_track_user_variables=1;
      SET @inserted_value=REPEAT(1,16777180);  # Only crashes when >=16777180 (max = 16777216)
      

      Leads to:

      10.5.4 8569dac1ec9f6853a0b2f3ea9bcbda67644ead24

      mysqld: /test/10.5_dbg/sql/protocol.cc:285: bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool): Assertion `store.length() <= (256L*256L*256L-1)' failed.
      

      10.5.4 8569dac1ec9f6853a0b2f3ea9bcbda67644ead24

      Core was generated by `/test/MD260520-mariadb-10.5.4-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.
      Program terminated with signal SIGABRT, Aborted.
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6)
          at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
      [Current thread is 1 (Thread 0x148e2cc38700 (LWP 3878224))]
      (gdb) bt
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
      #1  0x0000565006e45d7a in my_write_core (sig=sig@entry=6) at /test/10.5_dbg/mysys/stacktrace.c:518
      #2  0x00005650065eb385 in handle_fatal_signal (sig=6) at /test/10.5_dbg/sql/signal_handler.cc:330
      #3  <signal handler called>
      #4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
      #5  0x0000148e2b37c801 in __GI_abort () at abort.c:79
      #6  0x0000148e2b36c39a in __assert_fail_base (fmt=0x148e2b4f37d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x565006f9ca50 "store.length() <= (256L*256L*256L-1)", file=file@entry=0x565006f9c540 "/test/10.5_dbg/sql/protocol.cc", line=line@entry=285, function=function@entry=0x565006f9d820 <net_send_ok(THD*, unsigned int, unsigned int, unsigned long long, unsigned long long, char const*, bool, bool)::__PRETTY_FUNCTION__> "bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool)") at assert.c:92
      #7  0x0000148e2b36c412 in __GI___assert_fail (assertion=assertion@entry=0x565006f9ca50 "store.length() <= (256L*256L*256L-1)", file=file@entry=0x565006f9c540 "/test/10.5_dbg/sql/protocol.cc", line=line@entry=285, function=function@entry=0x565006f9d820 <net_send_ok(THD*, unsigned int, unsigned int, unsigned long long, unsigned long long, char const*, bool, bool)::__PRETTY_FUNCTION__> "bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool)") at assert.c:101
      #8  0x000056500624f222 in net_send_ok (thd=0x148e0a015088, server_status=server_status@entry=16386, statement_warn_count=statement_warn_count@entry=0, affected_rows=affected_rows@entry=0, id=id@entry=0, message=<optimized out>, message@entry=0x148e0a01abab "", is_eof=false, skip_flush=false) at /test/10.5_dbg/sql/protocol.cc:285
      #9  0x000056500624f3fa in Protocol::send_ok (this=0x148e0a015650, server_status=16386, statement_warn_count=0, affected_rows=0, last_insert_id=0, message=0x148e0a01abab "", skip_flush=false) at /test/10.5_dbg/sql/protocol.cc:643
      #10 0x000056500624fd52 in Protocol::end_statement (this=0x148e0a015650) at /test/10.5_dbg/sql/protocol.cc:606
      #11 0x000056500633cbc1 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x148e0a015088, packet=<optimized out>, packet@entry=0x148e0a067089 "SET @inserted_value=REPEAT(1,16777180)", packet_length=<optimized out>, packet_length@entry=38, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_dbg/sql/sql_parse.cc:2467
      #12 0x000056500633931c in do_command (thd=0x148e0a015088) at /test/10.5_dbg/sql/sql_parse.cc:1355
      #13 0x000056500649373f in do_handle_one_connection (connect=<optimized out>, connect@entry=0x148e0b8453a8, put_in_cache=put_in_cache@entry=true) at /test/10.5_dbg/sql/sql_connect.cc:1411
      #14 0x0000565006493e5b in handle_one_connection (arg=arg@entry=0x148e0b8453a8) at /test/10.5_dbg/sql/sql_connect.cc:1313
      #15 0x00005650068f314e in pfs_spawn_thread (arg=0x148e2a845888) at /test/10.5_dbg/storage/perfschema/pfs.cc:2201
      #16 0x0000148e2c05f6db in start_thread (arg=0x148e2cc38700) at pthread_create.c:463
      #17 0x0000148e2b45d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      Bug confirmed present in:
      MariaDB: 10.5.4 (dbg)

      Bug confirmed not present in:
      MariaDB: 10.1.46 (dbg), 10.1.46 (opt), 10.2.33 (dbg), 10.2.33 (opt), 10.3.24 (dbg), 10.3.24 (opt), 10.4.14 (dbg), 10.4.14 (opt), 10.5.4 (opt)
      MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.47 (dbg), 5.6.47 (opt), 5.7.29 (dbg), 5.7.29 (opt), 8.0.19 (dbg), 8.0.19 (opt)

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              Assignee:
              sanja Oleksandr Byelkin
              Reporter:
              Roel Roel Van de Paar
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                Dates

                Created:
                Updated: