ml_30-master.opt:

--loose-innodb_force_recovery=5

ml_30.test:

--source include/have_innodb.inc

CREATE SCHEMA DB1 ;

DROP SCHEMA DB1;

# Try to enforce that the crash gets detected.

# The DDL itself is not required for the crash.

CREATE TEMPORARY TABLE temp1 (col1 INT);

Version: '10.2.25-MariaDB-debug-log'  socket: 'bld_debug/mysql-test/var/tmp/mysqld.1.sock'  port: 16000  Source distribution

190524 15:17:08 [ERROR] mysqld got signal 11 ;

...

Query (0x7fc5c8011920): DROP SCHEMA DB1

Connection ID (thread ID): 5

Status: NOT_KILLED

...

Thread 1 (Thread 0x7fc5f6bf8700 (LWP 2449)):

#0  __pthread_kill (threadid=<optimized out>, signo=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

#1  0x00005623ea97a037 in my_write_core (sig=11) at mysys/stacktrace.c:477

#2  0x00005623ea2204f9 in handle_fatal_signal (sig=11) at sql/signal_handler.cc:343 

#3  <signal handler called>

#4  0x00005623ea627e8b in trx_assign_rseg_low () at storage/innobase/trx/trx0trx.cc:1001

#5  0x00005623ea628777 in trx_start_low (trx=0x7fc5f77da148, read_write=true) at storage/innobase/trx/trx0trx.cc:1192

#6  0x00005623ea62ce48 in trx_start_if_not_started_xa_low (trx=0x7fc5f77da148, read_write=true) at storage/innobase/trx/trx0trx.cc:2816

#7  0x00005623ea574ede in row_drop_database_for_mysql (name=0x7fc5c81471e8 "DB1/", trx=0x7fc5f77da148, found=0x7fc5f6bf5de0) at storage/innobase/row/row0mysql.cc:3933

#8  0x00005623ea43cc1e in innobase_drop_database (hton=0x5623eca041b8, path=0x7fc5f6bf6360 "./DB1/") at storage/innobase/handler/ha_innodb.cc:13343

#9  0x00005623ea22287f in dropdb_handlerton (unused1=0x0, plugin=0x7fc5c8155068, path=0x7fc5f6bf6360) at sql/handler.cc:708

#10 0x00005623e9fc13d3 in plugin_foreach_with_mask (thd=0x0, func=0x5623ea222826 <dropdb_handlerton(THD*, plugin_ref, void*)>, type=1, state_mask=8, arg=0x7fc5f6bf6360) at sql/sql_plugin.cc:2396

#11 0x00005623ea2228b4 in ha_drop_database (path=0x7fc5f6bf6360 "./DB1/") at sql/handler.cc:715

#12 0x00005623e9f71797 in mysql_rm_db_internal (thd=0x7fc5c8000ce8, db=0x7fc5c80119b0 "DB1", if_exists=false, silent=false) at sql/sql_db.cc:937

#13 0x00005623e9f71e74 in mysql_rm_db (thd=0x7fc5c8000ce8, db=0x7fc5c80119b0 "DB1", if_exists=false) at sql/sql_db.cc:1071

#14 0x00005623e9fa9f49 in mysql_execute_command (thd=0x7fc5c8000ce8) at sql/sql_parse.cc:4998

#15 0x00005623e9fb37d0 in mysql_parse (thd=0x7fc5c8000ce8, rawbuf=0x7fc5c8011920 "DROP SCHEMA DB1", length=15, parser_state=0x7fc5f6bf71f0, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:8020

#16 0x00005623e9fa1000 in dispatch_command (command=COM_QUERY, thd=0x7fc5c8000ce8, packet=0x7fc5c8189939 "DROP SCHEMA DB1", packet_length=15, is_com_multi=false, is_next_command=false) at sql/sql_parse.cc:1832

#17 0x00005623e9f9f956 in do_command (thd=0x7fc5c8000ce8) at sql/sql_parse.cc:1386

#18 0x00005623ea0f2633 in do_handle_one_connection (connect=0x5623eceb7628) at sql/sql_connect.cc:1335

#19 0x00005623ea0f23b3 in handle_one_connection (arg=0x5623eceb7628) at sql/sql_connect.cc:1241

#20 0x00005623ea91f8e5 in pfs_spawn_thread (arg=0x5623ecec4478) at storage/perfschema/pfs.cc:1862

#21 0x00007fc5fd2547fc in start_thread (arg=0x7fc5f6bf8700) at pthread_create.c:465

#22 0x00007fc5fc68eb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

innodb_force_recovery <= 4 does not end with crash.

10.2 commit b90918dae33f8e3be4af2915984b5a4587e69f89 2019-05-21