Similar stack to MDEV-19273, and same setup (DROP SEQUENCE <non-sequence>), with this bug present seemingly in 10.5 and 10.6 only.
CREATE TABLE t (c INT);
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LOCK TABLES t READ LOCAL;
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CREATE TEMPORARY TABLE t (a INT) SELECT 1 AS a;
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DROP SEQUENCE t;
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Leads to:
10.6.0 5d4599f9750140f92cfdbbe4d292ae1b8dd456f8 (Debug)
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mysqld: /test/10.6_dbg/sql/table_cache.cc:1030: void tdc_remove_table(THD*, const char*, const char*): Assertion `thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, table_name, MDL_EXCLUSIVE)' failed.
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10.6.0 5d4599f9750140f92cfdbbe4d292ae1b8dd456f8 (Debug)
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Core was generated by `/test/MD211020-mariadb-10.6.0-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.
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Program terminated with signal SIGABRT, Aborted.
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#0 __pthread_kill (threadid=<optimized out>, signo=signo@entry=6)
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at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
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[Current thread is 1 (Thread 0x14d6a815d700 (LWP 2018263))]
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(gdb) bt
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#0 __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
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#1 0x000055b1cfcb6021 in my_write_core (sig=sig@entry=6) at /test/10.6_dbg/mysys/stacktrace.c:424
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#2 0x000055b1cf3fd321 in handle_fatal_signal (sig=6) at /test/10.6_dbg/sql/signal_handler.cc:330
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#3 <signal handler called>
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#4 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
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#5 0x000014d6b27c7859 in __GI_abort () at abort.c:79
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#6 0x000014d6b27c7729 in __assert_fail_base (fmt=0x14d6b295d588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55b1cfe64080 "thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, table_name, MDL_EXCLUSIVE)", file=0x55b1cfe76538 "/test/10.6_dbg/sql/table_cache.cc", line=1030, function=<optimized out>) at assert.c:92
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#7 0x000014d6b27d8f36 in __GI___assert_fail (assertion=assertion@entry=0x55b1cfe64080 "thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, table_name, MDL_EXCLUSIVE)", file=file@entry=0x55b1cfe76538 "/test/10.6_dbg/sql/table_cache.cc", line=line@entry=1030, function=function@entry=0x55b1cfe76a90 "void tdc_remove_table(THD*, const char*, const char*)") at assert.c:101
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#8 0x000055b1cf35e55b in tdc_remove_table (thd=thd@entry=0x14d658000db8, db=0x14d658012df8 "test", table_name=0x14d6580126f0 "t") at /test/10.6_dbg/sql/table_cache.cc:1030
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#9 0x000055b1cf1fdf41 in mysql_rm_table_no_locks (thd=thd@entry=0x14d658000db8, tables=tables@entry=0x14d658012728, if_exists=if_exists@entry=false, drop_temporary=drop_temporary@entry=false, drop_view=drop_view@entry=false, drop_sequence=drop_sequence@entry=true, dont_log_query=false, dont_free_locks=false) at /test/10.6_dbg/sql/sql_table.cc:2446
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#10 0x000055b1cf1ffe2e in mysql_rm_table (thd=thd@entry=0x14d658000db8, tables=tables@entry=0x14d658012728, if_exists=<optimized out>, drop_temporary=<optimized out>, drop_sequence=<optimized out>, dont_log_query=dont_log_query@entry=false) at /test/10.6_dbg/sql/sql_table.cc:2143
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#11 0x000055b1cf13d646 in mysql_execute_command (thd=thd@entry=0x14d658000db8) at /test/10.6_dbg/sql/structs.h:559
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#12 0x000055b1cf126fd2 in mysql_parse (thd=thd@entry=0x14d658000db8, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14d6a815c3d0) at /test/10.6_dbg/sql/sql_parse.cc:7833
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#13 0x000055b1cf1350c7 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14d658000db8, packet=packet@entry=0x14d658008ce9 "DROP SEQUENCE t", packet_length=packet_length@entry=15) at /test/10.6_dbg/sql/sql_class.h:1253
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#14 0x000055b1cf1383d2 in do_command (thd=0x14d658000db8) at /test/10.6_dbg/sql/sql_parse.cc:1343
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#15 0x000055b1cf292994 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55b1d37d74d8, put_in_cache=put_in_cache@entry=true) at /test/10.6_dbg/sql/sql_connect.cc:1410
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#16 0x000055b1cf29309b in handle_one_connection (arg=arg@entry=0x55b1d37d74d8) at /test/10.6_dbg/sql/sql_connect.cc:1312
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#17 0x000055b1cf746abb in pfs_spawn_thread (arg=0x55b1d3723688) at /test/10.6_dbg/storage/perfschema/pfs.cc:2201
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#18 0x000014d6b2cd5609 in start_thread (arg=<optimized out>) at pthread_create.c:477
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#19 0x000014d6b28c4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
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Bug confirmed present in:
MariaDB: 10.5.7 (dbg), 10.6.0 (dbg)
Bug (or feature/syntax) confirmed not present in:
MariaDB: 10.1.48 (dbg), 10.1.48 (opt), 10.2.35 (dbg), 10.2.35 (opt), 10.3.26 (dbg), 10.3.26 (opt), 10.4.16 (dbg), 10.4.16 (opt), 10.5.7 (opt), 10.6.0 (opt)
MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.50 (dbg), 5.6.50 (opt), 5.7.32 (dbg), 5.7.32 (opt), 8.0.22 (dbg), 8.0.22 (opt)
- relates to
-
MDEV-19273
Server crash in MDL_ticket::has_stronger_or_equal_type or Assertion `thd->mdl_context.is_lock_owner(MDL_key::TABLE, table->db.str, table->table_name.str, MDL_SHARED)' failed in mysql_rm_table_no_locks
-
-
Closed
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