Direct leak in my_register_filename / binlog_online_alter_end_trans

CREATE TABLE t (f LONGBLOB DEFAULT NULL) ENGINE=MyISAM;

INSERT INTO t VALUES (NULL);

--connect (con1,localhost,root,,)

--send

  ALTER TABLE t FORCE, ALGORITHM=COPY;

--connection default

INSERT INTO t SELECT REPEAT('a',130000) FROM JSON_TABLE(CONCAT('[',REPEAT('"a",',1000),'"a"]'), '$' COLUMNS (col1 FOR ORDINALITY)) AS u;

--connection con1

--reap

DROP TABLE t;

Warning: Memory not freed: 96

=================================================================

==2695459==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 96 byte(s) in 1 object(s) allocated from:

    #0 0x7fb4becb89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x5584f23b5b6a in my_malloc /data/src/bb-11.0-oalter-asan/mysys/my_malloc.c:91

    #2 0x5584f23b6cfb in my_strdup /data/src/bb-11.0-oalter-asan/mysys/my_malloc.c:235

    #3 0x5584f23b8b32 in my_register_filename /data/src/bb-11.0-oalter-asan/mysys/my_open.c:140

    #4 0x5584f238eca8 in create_temp_file /data/src/bb-11.0-oalter-asan/mysys/mf_tempfile.c:128

    #5 0x5584f2356249 in real_open_cached_file /data/src/bb-11.0-oalter-asan/mysys/mf_cache.c:61

    #6 0x5584f2362b4d in my_b_flush_io_cache /data/src/bb-11.0-oalter-asan/mysys/mf_iocache.c:1706

    #7 0x5584f235ca73 in _my_b_write /data/src/bb-11.0-oalter-asan/mysys/mf_iocache.c:559

    #8 0x5584f235820d in my_b_write /data/src/bb-11.0-oalter-asan/include/my_sys.h:545

    #9 0x5584f236237f in my_b_safe_write /data/src/bb-11.0-oalter-asan/mysys/mf_iocache.c:1623

    #10 0x5584f13e97ae in Log_event_writer::write_internal(unsigned char const*, unsigned long) /data/src/bb-11.0-oalter-asan/sql/log_event_server.cc:766

    #11 0x5584f13eabbf in Log_event_writer::write_data(unsigned char const*, unsigned long) /data/src/bb-11.0-oalter-asan/sql/log_event_server.cc:869

    #12 0x5584f13b3897 in CacheWriter::write(unsigned char*, unsigned long) /data/src/bb-11.0-oalter-asan/sql/log.cc:7675

    #13 0x5584f1391157 in Event_log::write_cache(THD*, st_io_cache*) /data/src/bb-11.0-oalter-asan/sql/log.cc:7902

    #14 0x5584f138f857 in binlog_online_alter_end_trans /data/src/bb-11.0-oalter-asan/sql/log.cc:7711

    #15 0x5584f136d7d9 in binlog_commit(THD*, bool, bool) /data/src/bb-11.0-oalter-asan/sql/log.cc:2333

    #16 0x5584f1038b84 in commit_one_phase_2 /data/src/bb-11.0-oalter-asan/sql/handler.cc:2116

    #17 0x5584f10387e9 in ha_commit_one_phase(THD*, bool) /data/src/bb-11.0-oalter-asan/sql/handler.cc:2078

    #18 0x5584f1036ab7 in ha_commit_trans(THD*, bool) /data/src/bb-11.0-oalter-asan/sql/handler.cc:1872

    #19 0x5584f0c40b90 in trans_commit_stmt(THD*) /data/src/bb-11.0-oalter-asan/sql/transaction.cc:472

    #20 0x5584f075f608 in mysql_execute_command(THD*, bool) /data/src/bb-11.0-oalter-asan/sql/sql_parse.cc:6061

    #21 0x5584f076bd4c in mysql_parse(THD*, char*, unsigned int, Parser_state*) /data/src/bb-11.0-oalter-asan/sql/sql_parse.cc:8000

    #22 0x5584f0741f44 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /data/src/bb-11.0-oalter-asan/sql/sql_parse.cc:1894

    #23 0x5584f073ec76 in do_command(THD*, bool) /data/src/bb-11.0-oalter-asan/sql/sql_parse.cc:1407

    #24 0x5584f0bfd039 in do_handle_one_connection(CONNECT*, bool) /data/src/bb-11.0-oalter-asan/sql/sql_connect.cc:1416

    #25 0x5584f0bfc9fa in handle_one_connection /data/src/bb-11.0-oalter-asan/sql/sql_connect.cc:1318

    #26 0x5584f17d8a37 in pfs_spawn_thread /data/src/bb-11.0-oalter-asan/storage/perfschema/pfs.cc:2201

    #27 0x7fb4be0a7fd3 in start_thread nptl/pthread_create.c:442

SUMMARY: AddressSanitizer: 96 byte(s) leaked in 1 allocation(s).

230329  0:36:08 [ERROR] mysqld got signal 6 ;

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: 11.0.1-MariaDB-debug-log source revision: e599b8b45867cd24720a9ecd4ba28500f579c5a4

read_buffer_size=131072

max_used_connections=2

thread_count=0

Thread pointer: 0x0

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 = 0x0 thread_stack 0x100000

sanitizer_common/sanitizer_common_interceptors.inc:4277(__interceptor_backtrace.part.0)[0x7fb4bec51f31]

mysys/stacktrace.c:215(my_print_stacktrace)[0x5584f23c6cd1]

sql/signal_handler.cc:238(handle_fatal_signal)[0x5584f1027e24]

libc_sigaction.c:0(__restore_rt)[0x7fb4be05af90]

nptl/pthread_kill.c:44(__pthread_kill_implementation)[0x7fb4be0a9ccc]

posix/raise.c:27(__GI_raise)[0x7fb4be05aef2]

stdlib/abort.c:81(__GI_abort)[0x7fb4be045472]

sanitizer_common/sanitizer_posix_libcdep.cpp:137(__sanitizer::Abort())[0x7fb4becd650f]

sanitizer_common/sanitizer_termination.cpp:59(__sanitizer::Die())[0x7fb4bece2ba1]

lsan/lsan_common_linux.cpp:120(__lsan::HandleLeaks())[0x7fb4becea87c]

lsan/lsan_common.cpp:732(__lsan::DoLeakCheck())[0x7fb4bece8dc5]

stdlib/cxa_finalize.c:84(__cxa_finalize)[0x7fb4be05cf37]

crtstuff.c:0(__do_global_dtors_aux)[0x7fb4bec24bc7]

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 /mnt8t/src/bb-11.0-oalter-asan/mysql-test/var/mysqld.1/data

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        unlimited            unlimited            bytes     

Max resident set          unlimited            unlimited            bytes     

Max processes             385809               385809               processes 

Max open files            1024                 1024                 files     

Max locked memory         12649951232          12649951232          bytes     

Max address space         unlimited            unlimited            bytes     

Max file locks            unlimited            unlimited            locks     

Max pending signals       385809               385809               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

Fatal signal 11 while backtracing