What hardware are you on, and does it have ECC memory? On Thu, Nov 4, 2021 at 7:48 PM Michael Caplan <michael@eggplant.ws> wrote:
Hello,
I have a nothing fancy SQL statement that crashes MariaDB 10.3.31. The error log reports "mysqld got signal 11" with the below included mini core dump.
The statement caused no issues with my prior install of 10.2.xx. With 10.3, the statement runs the majority of the time. The vast majority of the time.
I have never dealt with such an issue with MariaDB, and am unsure where to start with troubleshooting this. Any tips?
FYI, there is a corresponding bug recorded here: https://jira.mariadb.org/browse/MDEV-26835
Thanks,
Mike
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
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