Details
Description
PoC:
CREATE TABLE v2 ( v3 INT ( 29 ) ) ; |
SELECT ( 'x' ) FROM v2 GROUP BY v3 HAVING v3 = ( NOT EXISTS ( SELECT * WHERE 'x' ) ) ; |
report (compiled with ASAN):
Thread pointer: 0x7f0dac000c58
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x7f0e10057e30 thread_stack 0x49000
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mysys/stacktrace.c:212(my_print_stacktrace)[0xe12bae]
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sql/signal_handler.cc:226(handle_fatal_signal)[0x973f04]
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sigaction.c:0(__restore_rt)[0x7f0e1b8b53c0]
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sql/item_subselect.cc:4026(subselect_single_select_engine::exec())[0xa36cdc]
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sql/item_subselect.cc:858(Item_subselect::exec())[0xa2e4bc]
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sql/item_subselect.cc:1872(Item_exists_subselect::val_bool())[0xa30a1e]
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sql/item_cmpfunc.cc:202(Item_func_not::val_int())[0x9a6739]
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sql/sql_type.cc:8716(Type_handler_int_result::Item_eq_value(THD*, Type_cmp_attributes const*, Item*, Item*) const)[0x8d676c]
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sql/item_cmpfunc.cc:6746(Item_equal::add_const(THD*, Item*))[0x9b79d8]
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??:0(Item_equal::merge_with_check(THD*, Item_equal*, bool))[0x9b7d7b]
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sql/sql_list.h:429(base_list_iterator::next())[0x7aec59]
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sql/field.h:429(Context)[0x899f87]
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??:0(JOIN::optimize_inner())[0x79112c]
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??:0(JOIN::optimize())[0x78af00]
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sql/sql_select.cc:4993(mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_
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select_lex*))[0x785468]
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sql/sql_select.cc:543(handle_select(THD*, LEX*, select_result*, unsigned long))[0x785330]
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sql/sql_parse.cc:6252(execute_sqlcom_select(THD*, TABLE_LIST*))[0x754fea]
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??:0(mysql_execute_command(THD*, bool))[0x74ef77]
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sql/sql_class.h:2734(THD::enter_stage(PSI_stage_info_v1 const*, char const*, char const*, unsigned int))[0x74b207]
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sql/sql_parse.cc:1896(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0x7490c7]
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sql/sql_parse.cc:1404(do_command(THD*, bool))[0x74b65e]
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sql/sql_connect.cc:1418(do_handle_one_connection(CONNECT*, bool))[0x85bf2e]
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sql/sql_connect.cc:1318(handle_one_connection)[0x85bd4d]
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perfschema/pfs.cc:2203(pfs_spawn_thread)[0xb8496e]
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nptl/pthread_create.c:478(start_thread)[0x7f0e1b8a9609]
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??:0(clone)[0x7f0e1b5c9163]
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Trying to get some variables.
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Some pointers may be invalid and cause the dump to abort.
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Query (0x7f0dac010b50): SELECT ( 'x' ) FROM v2 GROUP BY v3 HAVING v3 = ( NOT EXISTS ( SELECT * WHERE 'x' ) )
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Attachments
Issue Links
- duplicates
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MDEV-26402 A SEGV in Item_field::used_tables/update_depend_map_for_order or Assertion `fixed == 1'
- Closed
- relates to
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MDEV-25084 Assertion failure when moving equality from having to where
- Stalled
- links to