Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.3.7, 10.3.8
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None
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Linux (Ubuntu)
Description
Running the following query crashes the server:
SELECT * FROM (VALUES(1+1,2)) t;
It seems that the combination of VALUES in a derived table plus expression (as opposed to literal values) causes the problem.
The following crashes too:
SELECT * FROM (VALUES(now(),2)) t
However, these don't crash:
VALUES (now(), 2); |
VALUES (1+2, 2); |
SELECT * FROM (VALUES(1,2)) t; |
Reproducible on head of 10.3 branch (340c8a2a32dcbe0bb9bc88bd0a6bda5d5e76ed02).
From the logs:
180809 16:08:02 [ERROR] mysqld got signal 11 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see https://mariadb.com/kb/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.3.9-MariaDB
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key_buffer_size=134217728
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read_buffer_size=131072
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max_used_connections=1
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max_threads=153
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thread_count=7
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467396 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x7fda140009a8
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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 = 0x7fda84191cf8 thread_stack 0x49000
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/opt/mariadb/master/bin/mysqld(my_print_stacktrace+0x2e)[0x56324db7026e]
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mysys/stacktrace.c:270(my_print_stacktrace)[0x56324d616097]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7fda873bb390]
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/opt/mariadb/master/bin/mysqld(+0xd3c2eb)[0x56324dbfd2eb]
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strings/ctype-utf8.c:5304(my_strcasecmp_utf8)[0x56324d4db4a5]
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sql/sql_view.cc:143(check_duplicate_names(THD*, List<Item>&, bool))[0x56324d4018ad]
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sql/sql_derived.cc:772(mysql_derived_prepare(THD*, LEX*, TABLE_LIST*))[0x56324d401fe8]
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sql/sql_derived.cc:197(mysql_handle_single_derived(LEX*, TABLE_LIST*, unsigned int))[0x56324d41cd17]
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sql/sql_lex.cc:4073(st_select_lex::handle_derived(LEX*, unsigned int))[0x56324d481269]
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sql/sql_select.cc:997(JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*))[0x56324d49137c]
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sql/sql_select.cc:4205(mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x56324d4914d8]
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sql/sql_select.cc:382(handle_select(THD*, LEX*, select_result*, unsigned long))[0x56324d352d64]
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sql/sql_parse.cc:6548(execute_sqlcom_select(THD*, TABLE_LIST*) [clone .constprop.240])[0x56324d43e6fd]
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sql/sql_parse.cc:3768(mysql_execute_command(THD*))[0x56324d44068a]
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sql/sql_parse.cc:8088(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x56324d443051]
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sql/sql_parse.cc:1850(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x56324d443b3c]
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sql/sql_parse.cc:1397(do_command(THD*))[0x56324d5146c2]
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sql/sql_connect.cc:1402(do_handle_one_connection(CONNECT*))[0x56324d51483d]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7fda873b16ba]
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x86_64/clone.S:111(clone)[0x7fda86a5c41d]
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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 (0x7fda140145f0): is an invalid pointer
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Connection ID (thread ID): 8
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Status: NOT_KILLED
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Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
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information that should help you find out what is causing the crash.
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We think the query pointer is invalid, but we will try to print it anyway.
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Query: SELECT * FROM (VALUES(1,now())) t
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