Thread 1 (Thread 0x7f7755e09700 (LWP 7074)):
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#0 __pthread_kill (threadid=<optimized out>, signo=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:62
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#1 0x0000560addd0c403 in my_write_core (sig=11) at /home/alice/git/10.2/mysys/stacktrace.c:477
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#2 0x0000560add59c6f1 in handle_fatal_signal (sig=11) at /home/alice/git/10.2/sql/signal_handler.cc:305
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#3 <signal handler called>
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#4 0x0000560add4b2d8c in Exec_time_tracker::get_loops (this=0x8) at /home/alice/git/10.2/sql/sql_analyze_stmt.h:74
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#5 0x0000560add59b9c4 in Filesort_tracker::report_use (this=0x0, r_limit_arg=18446744073709551615) at /home/alice/git/10.2/sql/sql_analyze_stmt.h:191
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#6 0x0000560add59612e in filesort (thd=0x7f7744000a98, table=0x7f77441675b0, filesort=0x7f774406f7e0, tracker=0x0, join=0x7f77441842b0, first_table_bit=1) at /home/alice/git/10.2/sql/filesort.cc:211
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#7 0x0000560add3a2afb in create_sort_index (thd=0x7f7744000a98, join=0x7f77441842b0, tab=0x7f7744166e20, fsort=0x7f774406f7e0) at /home/alice/git/10.2/sql/sql_select.cc:21790
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#8 0x0000560add4f1fac in Window_funcs_sort::exec (this=0x7f77441163f0, join=0x7f77441842b0) at /home/alice/git/10.2/sql/sql_window.cc:2761
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#9 0x0000560add4f24af in Window_funcs_computation::exec (this=0x7f7744067290, join=0x7f77441842b0) at /home/alice/git/10.2/sql/sql_window.cc:2886
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#10 0x0000560add3afaaa in AGGR_OP::end_send (this=0x7f7744146f30) at /home/alice/git/10.2/sql/sql_select.cc:26540
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#11 0x0000560add39ac26 in sub_select_postjoin_aggr (join=0x7f77441842b0, join_tab=0x7f7744166e20, end_of_records=true) at /home/alice/git/10.2/sql/sql_select.cc:18379
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#12 0x0000560add39af4a in sub_select (join=0x7f77441842b0, join_tab=0x7f7744166a70, end_of_records=true) at /home/alice/git/10.2/sql/sql_select.cc:18615
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#13 0x0000560add39a75b in do_select (join=0x7f77441842b0, procedure=0x0) at /home/alice/git/10.2/sql/sql_select.cc:18210
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#14 0x0000560add375185 in JOIN::exec_inner (this=0x7f77441842b0) at /home/alice/git/10.2/sql/sql_select.cc:3540
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#15 0x0000560add374626 in JOIN::exec (this=0x7f77441842b0) at /home/alice/git/10.2/sql/sql_select.cc:3335
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#16 0x0000560add3757f6 in mysql_select (thd=0x7f7744000a98, tables=0x7f7744004688, wild_num=0, fields=..., conds=0x0, og_num=1, order=0x7f77441443c0, group=0x0, having=0x0, proc_param=0x0, select_options=268435456, result=0x7f774417bef0, unit=0x7f7744004638, select_lex=0x7f7744147c20) at /home/alice/git/10.2/sql/sql_select.cc:3735
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#17 0x0000560add412e37 in st_select_lex_unit::exec (this=0x7f7744004638) at /home/alice/git/10.2/sql/sql_union.cc:1129
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#18 0x0000560add40f100 in mysql_union (thd=0x7f7744000a98, lex=0x7f7744004570, result=0x7f774417bef0, unit=0x7f7744004638, setup_tables_done_option=0) at /home/alice/git/10.2/sql/sql_union.cc:41
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#19 0x0000560add369e45 in handle_select (thd=0x7f7744000a98, lex=0x7f7744004570, result=0x7f774417bef0, setup_tables_done_option=0) at /home/alice/git/10.2/sql/sql_select.cc:351
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#20 0x0000560add335e82 in execute_sqlcom_select (thd=0x7f7744000a98, all_tables=0x7f774417dca0) at /home/alice/git/10.2/sql/sql_parse.cc:6456
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#21 0x0000560add32bc00 in mysql_execute_command (thd=0x7f7744000a98) at /home/alice/git/10.2/sql/sql_parse.cc:3467
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#22 0x0000560add33981d in mysql_parse (thd=0x7f7744000a98, rawbuf=0x7f7744181790 "SELECT 1 UNION SELECT a FROM t ORDER BY (row_number() over ())", length=62, parser_state=0x7f7755e081f0, is_com_multi=false, is_next_command=false) at /home/alice/git/10.2/sql/sql_parse.cc:7897
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#23 0x0000560add32749f in dispatch_command (command=COM_QUERY, thd=0x7f7744000a98, packet=0x7f7744007fe9 "", packet_length=62, is_com_multi=false, is_next_command=false) at /home/alice/git/10.2/sql/sql_parse.cc:1806
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#24 0x0000560add325dfb in do_command (thd=0x7f7744000a98) at /home/alice/git/10.2/sql/sql_parse.cc:1360
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#25 0x0000560add47401f in do_handle_one_connection (connect=0x560ae0bffd48) at /home/alice/git/10.2/sql/sql_connect.cc:1335
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#26 0x0000560add473d9f in handle_one_connection (arg=0x560ae0bffd48) at /home/alice/git/10.2/sql/sql_connect.cc:1241
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#27 0x0000560add7d1bc4 in pfs_spawn_thread (arg=0x560ae0b5f908) at /home/alice/git/10.2/storage/perfschema/pfs.cc:1862
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#28 0x00007f775c7736ba in start_thread (arg=0x7f7755e09700) at pthread_create.c:333
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#29 0x00007f775bc0841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
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