database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-28124 Server crashes in Explain_aggr_filesort::print_json_members

Browse Source 
SHOW EXPLAIN/ANALYZE FORMAT=JSON tries to access items that have already been
freed by a call to free_items() during THD::cleanup_after_query().
The solution is to disallow APC calls including SHOW EXPLAIN/ANALYZE
just before the call to free_items().
This commit is contained in:
Oleg Smirnov
2022-03-27 11:58:27 +07:00
committed by Sergei Petrunia
parent a0475cb9ca
commit 02c3babdec
22 changed files with 303 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
sql/sql_parse.cc
View File

@ -2575,6 +2575,11 @@ void log_slow_statement(THD *thd)
end:
delete_explain_query(thd->lex);
DBUG_EXECUTE_IF("log_slow_statement_end",
if (dbug_user_var_equals_str(thd, "show_explain_probe_query",
thd->query()))
dbug_serve_apcs(thd, 1);
);
DBUG_VOID_RETURN;
}