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  1. MariaDB Server
  2. MDEV-20396

Server crashes after DELETE with SET NULL Foreign key and a virtual column in index

Details

    Description

      I'm getting a server crash when I issue a very simple DELETE statement "DELETE FROM companies WHERE CompanyID=749".

      I believe it might have something to do with an "ON DELETE SET NULL" foreign key relationship and some indexes of virtual columns in the child table... but unfortunately I was unable to reproduce the problem as a simple testcase; it seems to depend somehow on the data in my existing DB.

      I can however reliably repeat the crash if I issue the exact same DELETE statement.

      Since I was unable to determine the specific cause, I can't tell if this is related to an already-reported bug or not.

      The tables are all InnoDB, and running mysql_upgrade did not affect the issue.

      The log contained the following:

      190821  4:08:56 [ERROR] mysqld got signal 11 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed,
      something is definitely wrong and this may fail.
       
      Server version: 10.3.17-MariaDB
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=2
      max_threads=153
      thread_count=8
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467422 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x55a1b0836658
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0x7f17c45a8d30 thread_stack 0x49000
      /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55a1adf3f93e]
      /usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x55a1ad9df2af]sigaction.c:0(__restore_rt)[0x7f17d4b355d0]
      /usr/sbin/mysqld(+0xa174fd)[0x55a1adc6d4fd]
      /usr/sbin/mysqld(+0xa17ddc)[0x55a1adc6dddc]
      /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
      /usr/sbin/mysqld(+0x9ea141)[0x55a1adc40141]
      /usr/sbin/mysqld(+0x9d35c2)[0x55a1adc295c2]
      /usr/sbin/mysqld(+0xa12a78)[0x55a1adc68a78]
      /usr/sbin/mysqld(+0xa18809)[0x55a1adc6e809]
      /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
      /usr/sbin/mysqld(+0x9e9c0b)[0x55a1adc3fc0b]
      /usr/sbin/mysqld(+0x926c1c)[0x55a1adb7cc1c]
      /usr/sbin/mysqld(_ZN7handler13ha_delete_rowEPKh+0x19f)[0x55a1ad9eb01f]
      /usr/sbin/mysqld(_Z12mysql_deleteP3THDP10TABLE_LISTP4ItemP10SQL_I_ListI8st_orderEyyP13select_result+0x14e8)[0x55a1adb1fa68]
      /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x25d1)[0x55a1ad803611]
      /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22b)[0x55a1ad809c2b]
      /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1c9f)[0x55a1ad80c80f]
      /usr/sbin/mysqld(_Z10do_commandP3THD+0x13e)[0x55a1ad80d74e]
      /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x221)[0x55a1ad8e0f61]
      /usr/sbin/mysqld(handle_one_connection+0x3d)[0x55a1ad8e102d]
      pthread_create.c:0(start_thread)[0x7f17d4b2ddd5]
      /lib64/libc.so.6(clone+0x6d)[0x7f17d2ed002d]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x55a1b08440d0): DELETE FROM companies WHERE CompanyID=749
      Connection ID (thread ID): 40
      Status: NOT_KILLED
       
      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
       
      The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
      information that should help you find out what is causing the crash.
      Writing a core file...
      Working directory at /var/lib/mysql
      Resource Limits:Limit                     Soft Limit           Hard Limit           Units
      Max cpu time              unlimited            unlimited            seconds
      Max file size             unlimited            unlimited            bytes
      Max data size             unlimited            unlimited            bytes
      Max stack size            8388608              unlimited            bytes
      Max core file size        0                    unlimited            bytes
      Max resident set          unlimited            unlimited            bytes
      Max processes             7263                 7263                 processes
      Max open files            50000                50000                files
      Max locked memory         65536                65536                bytes
      Max address space         unlimited            unlimited            bytes
      Max file locks            unlimited            unlimited            locks
      Max pending signals       7263                 7263                 signals
      Max msgqueue size         819200               819200               bytes
      Max nice priority         0                    0
      Max realtime priority     0                    0
      Max realtime timeout      unlimited            unlimited            us
      Core pattern: core
      

      Attachments

        1. error log.txt
          9 kB
        2. testcase.zip
          307 kB
        3. virt.test
          15 kB

        Issue Links

          Activity

            Dean T Dean Trower created issue -
            alice Alice Sherepa made changes -
            Field Original Value New Value
            Labels need_feedback
            alice Alice Sherepa made changes -
            Description I'm getting a server crash when I issue a very simple DELETE statement "DELETE FROM companies WHERE CompanyID=749".

            I believe it might have something to do with an "ON DELETE SET NULL" foreign key relationship and some indexes of virtual columns in the child table... but unfortunately I was unable to reproduce the problem as a simple testcase; it seems to depend somehow on the data in my existing DB.

            I can however reliably repeat the crash if I issue the exact same DELETE statement.

            Since I was unable to determine the specific cause, I can't tell if this is related to an already-reported bug or not.

            The tables are all InnoDB, and running mysql_upgrade did not affect the issue.

            The log contained the following:

            190821  4:08:56 [ERROR] mysqld got signal 11 ;
            This could be because you hit a bug. It is also possible that this binary
            or one of the libraries it was linked against is corrupt, improperly built,
            or misconfigured. This error can also be caused by malfunctioning hardware.

            To report this bug, see https://mariadb.com/kb/en/reporting-bugs

            We will try our best to scrape up some info that will hopefully help
            diagnose the problem, but since we have already crashed,
            something is definitely wrong and this may fail.

            Server version: 10.3.17-MariaDB
            key_buffer_size=134217728
            read_buffer_size=131072
            max_used_connections=2
            max_threads=153
            thread_count=8
            It is possible that mysqld could use up to
            key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467422 K  bytes of memory
            Hope that's ok; if not, decrease some variables in the equation.

            Thread pointer: 0x55a1b0836658
            Attempting backtrace. You can use the following information to find out
            where mysqld died. If you see no messages after this, something went
            terribly wrong...
            stack_bottom = 0x7f17c45a8d30 thread_stack 0x49000
            /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55a1adf3f93e]
            /usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x55a1ad9df2af]sigaction.c:0(__restore_rt)[0x7f17d4b355d0]
            /usr/sbin/mysqld(+0xa174fd)[0x55a1adc6d4fd]
            /usr/sbin/mysqld(+0xa17ddc)[0x55a1adc6dddc]
            /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
            /usr/sbin/mysqld(+0x9ea141)[0x55a1adc40141]
            /usr/sbin/mysqld(+0x9d35c2)[0x55a1adc295c2]
            /usr/sbin/mysqld(+0xa12a78)[0x55a1adc68a78]
            /usr/sbin/mysqld(+0xa18809)[0x55a1adc6e809]
            /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
            /usr/sbin/mysqld(+0x9e9c0b)[0x55a1adc3fc0b]
            /usr/sbin/mysqld(+0x926c1c)[0x55a1adb7cc1c]
            /usr/sbin/mysqld(_ZN7handler13ha_delete_rowEPKh+0x19f)[0x55a1ad9eb01f]
            /usr/sbin/mysqld(_Z12mysql_deleteP3THDP10TABLE_LISTP4ItemP10SQL_I_ListI8st_orderEyyP13select_result+0x14e8)[0x55a1adb1fa68]
            /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x25d1)[0x55a1ad803611]
            /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22b)[0x55a1ad809c2b]
            /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1c9f)[0x55a1ad80c80f]
            /usr/sbin/mysqld(_Z10do_commandP3THD+0x13e)[0x55a1ad80d74e]
            /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x221)[0x55a1ad8e0f61]
            /usr/sbin/mysqld(handle_one_connection+0x3d)[0x55a1ad8e102d]
            pthread_create.c:0(start_thread)[0x7f17d4b2ddd5]
            /lib64/libc.so.6(clone+0x6d)[0x7f17d2ed002d]

            Trying to get some variables.
            Some pointers may be invalid and cause the dump to abort.
            Query (0x55a1b08440d0): DELETE FROM companies WHERE CompanyID=749
            Connection ID (thread ID): 40
            Status: NOT_KILLED

            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

            The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
            information that should help you find out what is causing the crash.
            Writing a core file...
            Working directory at /var/lib/mysql
            Resource Limits:Limit                     Soft Limit           Hard Limit           Units
            Max cpu time              unlimited            unlimited            seconds
            Max file size             unlimited            unlimited            bytes
            Max data size             unlimited            unlimited            bytes
            Max stack size            8388608              unlimited            bytes
            Max core file size        0                    unlimited            bytes
            Max resident set          unlimited            unlimited            bytes
            Max processes             7263                 7263                 processes
            Max open files            50000                50000                files
            Max locked memory         65536                65536                bytes
            Max address space         unlimited            unlimited            bytes
            Max file locks            unlimited            unlimited            locks
            Max pending signals       7263                 7263                 signals
            Max msgqueue size         819200               819200               bytes
            Max nice priority         0                    0
            Max realtime priority     0                    0
            Max realtime timeout      unlimited            unlimited            us
            Core pattern: core
            I'm getting a server crash when I issue a very simple DELETE statement "DELETE FROM companies WHERE CompanyID=749".

            I believe it might have something to do with an "ON DELETE SET NULL" foreign key relationship and some indexes of virtual columns in the child table... but unfortunately I was unable to reproduce the problem as a simple testcase; it seems to depend somehow on the data in my existing DB.

            I can however reliably repeat the crash if I issue the exact same DELETE statement.

            Since I was unable to determine the specific cause, I can't tell if this is related to an already-reported bug or not.

            The tables are all InnoDB, and running mysql_upgrade did not affect the issue.

            The log contained the following:
            {noformat}
            190821  4:08:56 [ERROR] mysqld got signal 11 ;
            This could be because you hit a bug. It is also possible that this binary
            or one of the libraries it was linked against is corrupt, improperly built,
            or misconfigured. This error can also be caused by malfunctioning hardware.

            To report this bug, see https://mariadb.com/kb/en/reporting-bugs

            We will try our best to scrape up some info that will hopefully help
            diagnose the problem, but since we have already crashed,
            something is definitely wrong and this may fail.

            Server version: 10.3.17-MariaDB
            key_buffer_size=134217728
            read_buffer_size=131072
            max_used_connections=2
            max_threads=153
            thread_count=8
            It is possible that mysqld could use up to
            key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467422 K  bytes of memory
            Hope that's ok; if not, decrease some variables in the equation.

            Thread pointer: 0x55a1b0836658
            Attempting backtrace. You can use the following information to find out
            where mysqld died. If you see no messages after this, something went
            terribly wrong...
            stack_bottom = 0x7f17c45a8d30 thread_stack 0x49000
            /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55a1adf3f93e]
            /usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x55a1ad9df2af]sigaction.c:0(__restore_rt)[0x7f17d4b355d0]
            /usr/sbin/mysqld(+0xa174fd)[0x55a1adc6d4fd]
            /usr/sbin/mysqld(+0xa17ddc)[0x55a1adc6dddc]
            /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
            /usr/sbin/mysqld(+0x9ea141)[0x55a1adc40141]
            /usr/sbin/mysqld(+0x9d35c2)[0x55a1adc295c2]
            /usr/sbin/mysqld(+0xa12a78)[0x55a1adc68a78]
            /usr/sbin/mysqld(+0xa18809)[0x55a1adc6e809]
            /usr/sbin/mysqld(+0xa18ff4)[0x55a1adc6eff4]
            /usr/sbin/mysqld(+0x9e9c0b)[0x55a1adc3fc0b]
            /usr/sbin/mysqld(+0x926c1c)[0x55a1adb7cc1c]
            /usr/sbin/mysqld(_ZN7handler13ha_delete_rowEPKh+0x19f)[0x55a1ad9eb01f]
            /usr/sbin/mysqld(_Z12mysql_deleteP3THDP10TABLE_LISTP4ItemP10SQL_I_ListI8st_orderEyyP13select_result+0x14e8)[0x55a1adb1fa68]
            /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x25d1)[0x55a1ad803611]
            /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22b)[0x55a1ad809c2b]
            /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1c9f)[0x55a1ad80c80f]
            /usr/sbin/mysqld(_Z10do_commandP3THD+0x13e)[0x55a1ad80d74e]
            /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x221)[0x55a1ad8e0f61]
            /usr/sbin/mysqld(handle_one_connection+0x3d)[0x55a1ad8e102d]
            pthread_create.c:0(start_thread)[0x7f17d4b2ddd5]
            /lib64/libc.so.6(clone+0x6d)[0x7f17d2ed002d]

            Trying to get some variables.
            Some pointers may be invalid and cause the dump to abort.
            Query (0x55a1b08440d0): DELETE FROM companies WHERE CompanyID=749
            Connection ID (thread ID): 40
            Status: NOT_KILLED

            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

            The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
            information that should help you find out what is causing the crash.
            Writing a core file...
            Working directory at /var/lib/mysql
            Resource Limits:Limit                     Soft Limit           Hard Limit           Units
            Max cpu time              unlimited            unlimited            seconds
            Max file size             unlimited            unlimited            bytes
            Max data size             unlimited            unlimited            bytes
            Max stack size            8388608              unlimited            bytes
            Max core file size        0                    unlimited            bytes
            Max resident set          unlimited            unlimited            bytes
            Max processes             7263                 7263                 processes
            Max open files            50000                50000                files
            Max locked memory         65536                65536                bytes
            Max address space         unlimited            unlimited            bytes
            Max file locks            unlimited            unlimited            locks
            Max pending signals       7263                 7263                 signals
            Max msgqueue size         819200               819200               bytes
            Max nice priority         0                    0
            Max realtime priority     0                    0
            Max realtime timeout      unlimited            unlimited            us
            Core pattern: core
            {noformat}
            alice Alice Sherepa made changes -
            Labels need_feedback
            elenst Elena Stepanova made changes -
            Component/s Storage Engine - InnoDB [ 10129 ]
            Component/s Virtual Columns [ 10803 ]
            Fix Version/s 10.3 [ 22126 ]
            Assignee Marko Mäkelä [ marko ]
            marko Marko Mäkelä made changes -
            Assignee Marko Mäkelä [ marko ] Nikita Malyavin [ nikitamalyavin ]
            nikitamalyavin Nikita Malyavin made changes -
            Status Open [ 1 ] In Progress [ 3 ]
            nikitamalyavin Nikita Malyavin made changes -
            Attachment virt.test [ 53079 ]
            nikitamalyavin Nikita Malyavin made changes -
            Comment [ [~Dean T] hi! What's your case? Did you find out the straight way to reproduce it? ]
            nikitamalyavin Nikita Malyavin made changes -
            Status In Progress [ 3 ] Stalled [ 10000 ]
            Dean T Dean Trower made changes -
            Attachment testcase.zip [ 53092 ]
            Dean T Dean Trower made changes -
            Affects Version/s 10.5.4 [ 24264 ]
            Affects Version/s 10.3.23 [ 24222 ]
            Dean T Dean Trower made changes -
            Environment CPanel on linux CPanel on linux, Windows x64
            Dean T Dean Trower made changes -
            Attachment error log.txt [ 53098 ]
            alice Alice Sherepa made changes -
            Affects Version/s 10.2 [ 14601 ]
            Affects Version/s 10.3 [ 22126 ]
            Affects Version/s 10.4 [ 22408 ]
            Affects Version/s 10.5 [ 23123 ]
            alice Alice Sherepa made changes -
            Fix Version/s 10.2 [ 14601 ]
            Fix Version/s 10.4 [ 22408 ]
            Fix Version/s 10.5 [ 23123 ]
            alice Alice Sherepa made changes -
            elenst Elena Stepanova made changes -
            nikitamalyavin Nikita Malyavin made changes -
            Status Stalled [ 10000 ] In Progress [ 3 ]
            nikitamalyavin Nikita Malyavin made changes -
            Summary MariaDB server crash Server crashes after DELETE with SEL NULL Foreign key and a virtual column in index
            nikitamalyavin Nikita Malyavin made changes -
            Assignee Nikita Malyavin [ nikitamalyavin ] Thirunarayanan Balathandayuthapani [ thiru ]
            thiru Thirunarayanan Balathandayuthapani made changes -
            Status In Progress [ 3 ] Stalled [ 10000 ]
            thiru Thirunarayanan Balathandayuthapani made changes -
            Assignee Thirunarayanan Balathandayuthapani [ thiru ] Nikita Malyavin [ nikitamalyavin ]
            nikitamalyavin Nikita Malyavin made changes -
            Assignee Nikita Malyavin [ nikitamalyavin ] Thirunarayanan Balathandayuthapani [ thiru ]
            Status Stalled [ 10000 ] In Review [ 10002 ]
            nikitamalyavin Nikita Malyavin made changes -
            Fix Version/s 10.2.34 [ 24505 ]
            Fix Version/s 10.3.25 [ 24506 ]
            Fix Version/s 10.4.15 [ 24507 ]
            Fix Version/s 10.5.6 [ 24508 ]
            Fix Version/s 10.2 [ 14601 ]
            Fix Version/s 10.3 [ 22126 ]
            Fix Version/s 10.4 [ 22408 ]
            Fix Version/s 10.5 [ 23123 ]
            Resolution Fixed [ 1 ]
            Status In Review [ 10002 ] Closed [ 6 ]
            nikitamalyavin Nikita Malyavin made changes -
            Summary Server crashes after DELETE with SEL NULL Foreign key and a virtual column in index Server crashes after DELETE with SEЕ NULL Foreign key and a virtual column in index
            nikitamalyavin Nikita Malyavin made changes -
            Summary Server crashes after DELETE with SEЕ NULL Foreign key and a virtual column in index Server crashes after DELETE with SET NULL Foreign key and a virtual column in index
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.5.7 [ 25019 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.5.6 [ 24508 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.4.16 [ 25020 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.4.15 [ 24507 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.3.26 [ 25021 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.3.25 [ 24506 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.2.35 [ 25022 ]
            ralf.gebhardt Ralf Gebhardt made changes -
            Fix Version/s 10.2.34 [ 24505 ]
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 99062 ] MariaDB v4 [ 156658 ]

            People

              thiru Thirunarayanan Balathandayuthapani
              Dean T Dean Trower
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              0 Vote for this issue
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              6 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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