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  1. MariaDB Server
  2. MDEV-21575

Server crashes with SIGSEGV during SELECT DISTINCT on nested views and joins

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Duplicate
    • 10.3.20, 10.3, 10.4
    • N/A
    • Optimizer
    • RHEL 7.7

    Description

      MariaDB Server crashed during SELECT – also EXPLAIN will cause the crash:
      Error message: ERROR 2013 (HY000): Lost connection to MySQL server during query
      System Journal Log:
      Jan 27 11:26:44 servername.domain mysqld[120940]: 200127 11:26:44 [ERROR] mysqld got signal 11 ;
      Jan 27 11:26:44 servername.domain mysqld[120940]: This could be because you hit a bug. It is also possible that this binary
      Jan 27 11:26:44 servername.domain mysqld[120940]: or one of the libraries it was linked against is corrupt, improperly built,
      Jan 27 11:26:44 servername.domain mysqld[120940]: or misconfigured. This error can also be caused by malfunctioning hardware.
      Jan 27 11:26:44 servername.domain mysqld[120940]: To report this bug, see https://mariadb.com/kb/en/reporting-bugs
      Jan 27 11:26:44 servername.domain mysqld[120940]: We will try our best to scrape up some info that will hopefully help
      Jan 27 11:26:44 servername.domain mysqld[120940]: diagnose the problem, but since we have already crashed,
      Jan 27 11:26:44 servername.domain mysqld[120940]: something is definitely wrong and this may fail.
      Jan 27 11:26:44 servername.domain mysqld[120940]: Server version: 10.3.20-MariaDB-log
      Jan 27 11:26:44 servername.domain mysqld[120940]: key_buffer_size=16777216
      Jan 27 11:26:44 servername.domain mysqld[120940]: read_buffer_size=131072
      Jan 27 11:26:44 servername.domain mysqld[120940]: max_used_connections=1
      Jan 27 11:26:44 servername.domain mysqld[120940]: max_threads=153
      Jan 27 11:26:44 servername.domain mysqld[120940]: thread_count=8
      Jan 27 11:26:44 servername.domain mysqld[120940]: It is possible that mysqld could use up to
      Jan 27 11:26:44 servername.domain mysqld[120940]: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2546142 K bytes of memory
      Jan 27 11:26:44 servername.domain mysqld[120940]: Hope that's ok; if not, decrease some variables in the equation.
      Jan 27 11:26:44 servername.domain mysqld[120940]: Thread pointer: 0x7f25840072b8
      Jan 27 11:26:44 servername.domain mysqld[120940]: Attempting backtrace. You can use the following information to find out
      Jan 27 11:26:44 servername.domain mysqld[120940]: where mysqld died. If you see no messages after this, something went
      Jan 27 11:26:44 servername.domain mysqld[120940]: terribly wrong...
      Jan 27 11:26:44 servername.domain mysqld[120940]: stack_bottom = 0x7f261d52ed30 thread_stack 0x49000
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55c09d39b8be]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x55c09ce3859f]
      Jan 27 11:26:44 servername.domain mysqld[120940]: sigaction.c:0(__restore_rt)[0x7f26329a3630]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z18cp_buffer_from_refP3THDP5TABLEP12st_table_ref+0x2b)[0x55c09cc9fb9b]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(+0x5faca0)[0x55c09cc9fca0]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x169)[0x55c09cc902d9]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0xa7b)[0x55c09ccb1edb]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_ZN4JOIN4execEv+0x33)[0x55c09ccb20f3]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x11a)[0x55c09ccb224a]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x1cc)[0x55c09ccb2d5c]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(+0x4c2f4c)[0x55c09cb67f4c]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x668b)[0x55c09cc5d03b]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22b)[0x55c09cc5f51b]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1ca6)[0x55c09cc62106]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z10do_commandP3THD+0x13e)[0x55c09cc6304e]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x221)[0x55c09cd37111]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /usr/sbin/mysqld(handle_one_connection+0x3d)[0x55c09cd371dd]
      Jan 27 11:26:44 servername.domain mysqld[120940]: pthread_create.c:0(start_thread)[0x7f263299bea5]
      Jan 27 11:26:44 servername.domain mysqld[120940]: /lib64/libc.so.6(clone+0x6d)[0x7f2630d3c8cd]
      Jan 27 11:26:44 servername.domain mysqld[120940]: Trying to get some variables.
      Jan 27 11:26:44 servername.domain mysqld[120940]: Some pointers may be invalid and cause the dump to abort.
      Jan 27 11:26:44 servername.domain mysqld[120940]: Query (0x7f2584017e30): SELECT DISTINCT h9.id FROM haz_mat h9 LEFT JOIN haz_mat_approval_statement_approval_state_view h14 ON h9.id = h14.haz_mat_id LEFT JOIN haz_mat_approval_statement_approval_state_view h15 ON h9.id = h15.haz_mat_id
      Jan 27 11:26:44 servername.domain mysqld[120940]: Connection ID (thread ID): 12
      Jan 27 11:26:44 servername.domain mysqld[120940]: Status: NOT_KILLED
      Jan 27 11:26:44 servername.domain mysqld[120940]: 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
      Jan 27 11:26:44 servername.domain mysqld[120940]: The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
      Jan 27 11:26:44 servername.domain mysqld[120940]: information that should help you find out what is causing the crash.
      Jan 27 11:26:44 servername.domain mysqld[120940]: Writing a core file...
      Jan 27 11:26:44 servername.domain mysqld[120940]: Working directory at /data/mysql
      Jan 27 11:26:44 servername.domain mysqld[120940]: Resource Limits:
      Jan 27 11:26:44 servername.domain mysqld[120940]: Limit Soft Limit Hard Limit Units
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max cpu time unlimited unlimited seconds
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max file size unlimited unlimited bytes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max data size unlimited unlimited bytes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max stack size 8388608 unlimited bytes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max core file size 0 unlimited bytes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max resident set unlimited unlimited bytes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max processes 14989 14989 processes
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max open files 16364 16364 files
      Jan 27 11:26:44 servername.domain mysqld[120940]: Max locked memory 65536 65536 bytes
      Jan 27 11:26:44 servername.domain systemd[1]: mariadb.service: main process exited, code=killed, status=11/SEGV
      Jan 27 11:26:44 servername.domain systemd[1]: Unit mariadb.service entered failed state.
      Jan 27 11:26:44 servername.domain systemd[1]: mariadb.service failed.
      Jan 27 11:26:49 servername.domain systemd[1]: mariadb.service holdoff time over, scheduling restart.
      Jan 27 11:26:49 servername.domain systemd[1]: Stopped MariaDB 10.3.20 database server.
      Jan 27 11:26:49 servername.domain systemd[1]: Starting MariaDB 10.3.20 database server...
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] /usr/sbin/mysqld (mysqld 10.3.20-MariaDB-log) starting as process 121874 ...
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Loaded 'server_audit.so' with offset 0x7f8f68de1000
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Loaded 'simple_password_check.so' with offset 0x7f8f68bde000
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Using Linux native AIO
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Uses event mutexes
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Compressed tables use zlib 1.2.7
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Number of pools: 1
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Using SSE2 crc32 instructions
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Initializing buffer pool, total size = 1G, instances = 8, chunk size = 128M
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Completed initialization of buffer pool
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=1371316416
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Last binlog file '/datalog/binlog/mariadb-bin.000030', position 37983359
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Creating shared tablespace for temporary tables
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Waiting for purge to start
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: 10.3.20 started; log sequence number 1371316425; transaction id 119256
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] InnoDB: Loading buffer pool(s) from /data/mysql/ib_buffer_pool
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Plugin 'FEEDBACK' is disabled.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 200127 11:26:50 server_audit: MariaDB Audit Plugin version 1.4.8 STARTED.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 200127 11:26:50 server_audit: logging started to the syslog.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Recovering after a crash using /datalog/binlog/mariadb-bin
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Starting crash recovery...
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Crash recovery finished.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Server socket created on IP: '::'.
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Reading of all Master_info entries succeeded
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] Added new Master_info '' to hash table
      Jan 27 11:26:50 servername.domain mysqld[121874]: 2020-01-27 11:26:50 0 [Note] /usr/sbin/mysqld: ready for connections.
      Jan 27 11:26:50 servername.domain mysqld[121874]: Version: '10.3.20-MariaDB-log' socket: '/data/mysql/mysql.sock' port: 1800 MariaDB Server
      Jan 27 11:26:50 servername.domain systemd[1]: Started MariaDB 10.3.20 database server.

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              TyraMissU Ronald Kurz
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