mysqld got signal 11

211014 16:13:53 [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: 10.3.31-MariaDB-1:10.3.31+maria~focal-log

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=587

max_threads=752

thread_count=81

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1784362 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f13e83b3768

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 = 0x7f1644e96dd8 thread_stack 0x49000

/usr/sbin/mysqld(my_print_stacktrace+0x32)[0x55d5a2f6f3a2]

/usr/sbin/mysqld(handle_fatal_signal+0x55d)[0x55d5a2a46e8d]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x153c0)[0x7f27569fc3c0]

/usr/sbin/mysqld(+0x978f4f)[0x55d5a2bdbf4f]

/usr/sbin/mysqld(_ZN7handler10ha_rnd_posEPhS0_+0x50)[0x55d5a2a4c6d0]

/usr/sbin/mysqld(_Z16rr_from_pointersP11READ_RECORD+0x3e)[0x55d5a2b7cb2e]

/usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x18e)[0x55d5a28869be]

/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0xbee)[0x55d5a28b0dce]

/usr/sbin/mysqld(_ZN4JOIN4execEv+0x37)[0x55d5a28b1137]

/usr/sbin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xf2)[0x55d5a28b1282]

/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x14b)[0x55d5a28b1bcb]

/usr/sbin/mysqld(+0x5de9f1)[0x55d5a28419f1]

/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x5414)[0x55d5a284f6e4]

/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x1f3)[0x55d5a2852253]

/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x105d)[0x55d5a285462d]

/usr/sbin/mysqld(_Z10do_commandP3THD+0x12d)[0x55d5a28565dd]

/usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x246)[0x55d5a293f186]

/usr/sbin/mysqld(handle_one_connection+0x3f)[0x55d5a293f35f]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x9609)[0x7f27569f0609]

/lib/x86_64-linux-gnu/libc.so.6(clone+0x43)[0x7f2756915293]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7f13e84a8b70): SELECT * FROM ((

            #

            # get postings from last statement and postings not on statements

            #

            SELECT a.*, COALESCE(ci.id, i.id) as invoice_id

            FROM ddx_lab_801317.postings a

            LEFT JOIN ddx_lab_801317.cases_invoices ci

            ON a.ref_type = 'CASE_INVOICE' AND a.ref_id = ci.id

            LEFT JOIN ddx_lab_801317.invoices i

            ON a.ref_type = 'INVOICE' AND a.ref_id = i.id

            WHERE (

                a.statement_date IS NULL

                OR a.statement_date = '2021-09-27'

            )

         AND a.practice_id='19686'

            ORDER BY post_date

        ) UNION (

            #

            # get postings that have remaining balances

            #

            SELECT DISTINCT a.*, COALESCE(ci.id, i.id) as invoice_id

            FROM ddx_lab_801317.postings a

            LEFT JOIN ddx_lab_801317.cases_invoices ci

            ON a.ref_type = 'CASE_INVOICE' AND a.ref_id = ci.id

            LEFT JOIN ddx_lab_801317.invoices i

            ON a.ref_type = 'INVOICE' AND a.ref_id = i.id

            LEFT JOIN ddx_lab_801317.postings b

                ON a.ref_type = b.ref_type

                AND a.ref_id = b.ref_id

                AND a.id != b.id

            WHERE NOT (a.type = 'CREDIT' OR a.type = 'PAYMENT')

            AND ((SELECT SUM(b.amount)) IS NULL OR (SELECT SUM(a.amount)) + (SELECT SUM(b.amount)) > 0)

         AND a.practice_id='19686' 

            GROUP BY a.id

            ORDER BY post_date

        ) UNION (

            #

            # get partial payments and credits from older statements

            #

            SELECT a.*, COALESCE(ci.id, i.id) as invoice_id

            FROM ddx_lab_801317.postings a

            LEFT JOIN ddx_lab_801317.cases_invoices ci

            ON a.ref_type = 'CASE_INVOICE' AND a.ref_id = ci.id

            LEFT JOIN ddx_lab_801317.invoices i

            ON a.ref_type = 'INVOICE' AND a.ref_id = i.id

            WHERE (

                a.statement_date < '2021-09-27'

            )

            AND (a.type='PAYMENT' OR a.type='CREDIT')

         AND a.practice_id='19686' )) AS t1 ORDER BY post_date ASC, invoice_id ASC

Connection ID (thread ID): 21014956

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 https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ 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             unlimited            unlimited            processes 

Max open files            1048576              1048576              files     

Max locked memory         unlimited            unlimited            bytes     

Max address space         unlimited            unlimited            bytes     

Max file locks            unlimited            unlimited            locks     

Max pending signals       514974               514974               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