Marko Mäkelä added a comment - 2019-01-25 07:45 In 10.3, this affects the following tests: binlog_encryption.binlog_row_annotate binlog_encryption.rpl_skip_replication binlog.binlog_row_annotate binlog.binlog_row_mysqlbinlog_options Easy to repeat with: cmake -DWITH_ASAN:BOOL=ON … ASAN_OPTIONS=abort_on_error=1 ./mtr --parallel=auto --force --retry=0 binlog_encryption.binlog_row_annotate binlog_encryption.rpl_skip_replication binlog.binlog_row_annotate binlog.binlog_row_mysqlbinlog_options

Marko Mäkelä added a comment - 2019-01-25 12:32 - edited More failures in 10.2: 10.2 fab531a150ec588f87e8a636d2ba1ecbfffdb08e encryption.tempfiles 'cbc,crc32,innodb' w2 [ fail ] Test ended at 2019-01-25 13:23:01   CURRENT_TEST: encryption.tempfiles   ================================================================= ==26545==ERROR: LeakSanitizer: detected memory leaks   Direct leak of 1920 byte(s) in 6 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x4fb637 in Log_event::operator new(unsigned long) /mariadb/10.2/sql/log_event.h:1326:20 #3 0x4fb637 in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #4 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #5 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #6 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #7 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #8 0x7f0706ed509a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   Indirect leak of 48672 byte(s) in 6 object(s) allocated from: #0 0x4c8e32 in realloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8e32) #1 0x617805 in my_realloc /mariadb/10.2/mysys/my_malloc.c:165:15 #2 0x54e4fb in String::realloc_raw(unsigned long) /mariadb/10.2/sql/sql_string.cc:96:30   Indirect leak of 46160 byte(s) in 6 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x547dac in Rows_log_event::Rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:10452:24 #3 0x4fb64e in Write_rows_log_event::Write_rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:12321:3 #4 0x4fb64e in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #5 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #6 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #7 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #8 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #9 0x7f0706ed509a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   SUMMARY: AddressSanitizer: 96752 byte(s) leaked in 18 allocation(s). Aborted ERROR 1064 (42000) at line 1012: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' lPFKXBMBAAAALgAAAAbKAAAAACcAAAAAAAEABHRlc3QAAnQyAAH8AQIBfIAF/w== lPFKXBcBAAAAb' at line 1 mysqltest: At line 80: exec of '/dev/shm/10.2/client/mysqlbinlog --defaults-file=/dev/shm/10.2/mysql-test/var/2/my.cnf --local-load=/dev/shm/10.2/mysql-test/var/tmp/2 /dev/shm/10.2/mysql-test/var/2/mysqld.1/data//master-bin.000001 | /dev/shm/10.2/client/mysql --defaults-file=/dev/shm/10.2/mysql-test/var/2/my.cnf' failed, error: 256, status: 1, errno: 11 10.2 fab531a150ec588f87e8a636d2ba1ecbfffdb08e CURRENT_TEST: binlog.flashback   ================================================================= ==35011==ERROR: LeakSanitizer: detected memory leaks   Direct leak of 640 byte(s) in 2 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x4fb5ab in Log_event::operator new(unsigned long) /mariadb/10.2/sql/log_event.h:1326:20 #3 0x4fb5ab in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2158 #4 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #5 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #6 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #7 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #8 0x7f984ccc209a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   Direct leak of 320 byte(s) in 1 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x4fb637 in Log_event::operator new(unsigned long) /mariadb/10.2/sql/log_event.h:1326:20 #3 0x4fb637 in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #4 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #5 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #6 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #7 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #8 0x7f984ccc209a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   Indirect leak of 480 byte(s) in 3 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x54e538 in String::realloc_raw(unsigned long) /mariadb/10.2/sql/sql_string.cc:102:32   Indirect leak of 48 byte(s) in 2 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x547dac in Rows_log_event::Rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:10452:24 #3 0x4fb5c2 in Delete_rows_log_event::Delete_rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:13395:5 #4 0x4fb5c2 in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2158 #5 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #6 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #7 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #8 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #9 0x7f984ccc209a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   Indirect leak of 24 byte(s) in 1 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x547dac in Rows_log_event::Rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:10452:24 #3 0x4fb64e in Write_rows_log_event::Write_rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:12321:3 #4 0x4fb64e in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #5 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #6 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #7 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #8 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #9 0x7f984ccc209a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   SUMMARY: AddressSanitizer: 1512 byte(s) leaked in 9 allocation(s). Aborted mysqltest: At line 203: exec of '/dev/shm/10.2/client/mysqlbinlog --defaults-file=/dev/shm/10.2/mysql-test/var/39/my.cnf --local-load=/dev/shm/10.2/mysql-test/var/tmp/39 -vv /dev/shm/10.2/mysql-test/var/39/mysqld.1/data//master-bin.000001 > /dev/shm/10.2/mysql-test/var/39/tmp/mysqlbinlog_row_flashback_original_4.sql' failed, error: 34304, status: 134, errno: 11 10.2 fab531a150ec588f87e8a636d2ba1ecbfffdb08e binlog.binlog_mysqlbinlog_base64 'row' w3 [ fail ] Test ended at 2019-01-25 13:23:20   CURRENT_TEST: binlog.binlog_mysqlbinlog_base64   ================================================================= ==982==ERROR: LeakSanitizer: detected memory leaks   Direct leak of 12160 byte(s) in 38 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x4fb637 in Log_event::operator new(unsigned long) /mariadb/10.2/sql/log_event.h:1326:20 #3 0x4fb637 in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #4 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #5 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #6 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #7 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #8 0x7f079822009a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   Indirect leak of 327024 byte(s) in 38 object(s) allocated from: #0 0x4c8e32 in realloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8e32) #1 0x617805 in my_realloc /mariadb/10.2/mysys/my_malloc.c:165:15 #2 0x54e4fb in String::realloc_raw(unsigned long) /mariadb/10.2/sql/sql_string.cc:96:30   Indirect leak of 311168 byte(s) in 38 object(s) allocated from: #0 0x4c8a13 in __interceptor_malloc (/dev/shm/10.2/client/mysqlbinlog+0x4c8a13) #1 0x6171e6 in my_malloc /mariadb/10.2/mysys/my_malloc.c:101:10 #2 0x547dac in Rows_log_event::Rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:10452:24 #3 0x4fb64e in Write_rows_log_event::Write_rows_log_event(char const*, unsigned int, Format_description_log_event const*) /mariadb/10.2/sql/log_event.cc:12321:3 #4 0x4fb64e in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:2150 #5 0x528d02 in Log_event::read_log_event(st_io_cache*, st_mysql_mutex*, Format_description_log_event const*, char) /mariadb/10.2/sql/log_event.cc:1923:13 #6 0x507407 in dump_local_log_entries(st_print_event_info*, char const*) /mariadb/10.2/client/mysqlbinlog.cc:2895:21 #7 0x507407 in dump_log_entries(char const*) /mariadb/10.2/client/mysqlbinlog.cc:2147 #8 0x507407 in main /mariadb/10.2/client/mysqlbinlog.cc:3082 #9 0x7f079822009a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)   SUMMARY: AddressSanitizer: 650352 byte(s) leaked in 114 allocation(s). Aborted mysqltest: At line 60: exec of '/dev/shm/10.2/client/mysqlbinlog --defaults-file=/dev/shm/10.2/mysql-test/var/3/my.cnf --local-load=/dev/shm/10.2/mysql-test/var/tmp/3 --hexdump /dev/shm/10.2/mysql-test/var/3/mysqld.1/data//master-bin.000003 > /dev/shm/10.2/mysql-test/var/3/tmp/mysqlbinlog_base64.sql' failed, error: 34304, status: 134, errno: 11

Marko Mäkelä added a comment - 2019-02-01 11:56 One more failure, without any ASAN instrumentation: 10.2 7c7161a1bd150e61f530933f096a8035932071af with a merge from 10.1 a193c5720ea461ce82390af3fe9c292581242223 binlog.binlog_mysqlbinlog_row_frag 'row' w29 [ fail ] Test ended at 2019-02-01 13:01:55   CURRENT_TEST: binlog.binlog_mysqlbinlog_row_frag realloc(): invalid next size Aborted mysqltest: At line 14: exec of '/dev/shm/10.2/client/mysqlbinlog --defaults-file=/dev/shm/10.2/mysql-test/var/29/my.cnf --local-load=/dev/shm/10.2/mysql-test/var/tmp/29 --debug-binlog-row-event-max-encoded-size=256 /dev/shm/10.2/mysql-test/var/29/mysqld.1/data//master-bin.000001 > /dev/shm/10.2/mysql-test/var/29/tmp/mysqlbinlog.sql' failed, error: 34304, status: 134, errno: 11 Output from before failure: DELETE FROM t;

Andrei Elkin added a comment - 2019-02-01 17:10 The latest failure has been introduced by 10.2 merge of MDEV-10963 fixes which required to build a MDEV-10362 at the same time to satisfy the 10.2 {{ --flashback }}. It must've been fixed already in bb-10.2-merge.

Marko Mäkelä added a comment - 2019-04-09 12:55 - edited I had a short try at fixing the leaks for cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_ASAN=ON -DWITH_SAFEMALLOC=OFF .. make -j$(nproc) cd mysql-test ASAN_OPTIONS=abort_on_error=1 ./mtr binlog.flashback The key points of mdev-17260-wip.patch are: Assignments of ev to other pointers should follow std::unique_ptr semantics (set the original pointer to NULL , so that there is only one ‘owner’ pointer) delete NULL is explicitly allowed by the standard After delete of global variables, it is good practice to set those variables to NULL , to avoid ’still reachable’ warnings from Valgrind. (I hope that you will validate the fix not only with AddressSanitizer but also by manually replacing mysqlbinlog with a wrapper that invokes Valgrind.) The patch does not leak memory, but will cause output differences in 10 of the 11 tests where leaks were reported: binlog.binlog_row_annotate binlog_encryption.binlog_row_annotate encryption.tempfiles binlog.binlog_mysqlbinlog_row binlog.binlog_mysqlbinlog_row_myisam binlog.binlog_mysqlbinlog_row_innodb binlog.binlog_mysqlbinlog_base64 binlog.binlog_row_mysqlbinlog_verbose The following test, which previously leaked memory, does pass: binlog.binlog_row_mysqlbinlog_db_filter 'innodb,row' The patch also causes numerous other test failures, such as this one: CURRENT_TEST: rpl.rpl_timezone --- /mariadb/10.2/mysql-test/suite/rpl/r/rpl_timezone.result 2019-01-24 01:01:18.946939895 +0800 +++ /mariadb/10.2/mysql-test/suite/rpl/r/rpl_timezone.reject 2019-04-10 00:33:19.013638879 +0800 @@ -158,8 +158,6 @@ connection master1; select * from t1 order by a; date a -2008-12-23 20:39:39 1 -2008-12-23 19:39:39 2 DROP TABLE t1; SET @@session.time_zone = default; include/rpl_end.inc   mysqltest: Result length mismatch I hope that mdev-17260-wip.patch is a viable starting point for a fix. Note: While my patch is based on 10.2, I believe that the final fix should be ported to 5.5.

Marko Mäkelä added a comment - 2019-04-09 16:44 While testing my patch, I found a heap-use-after-free in all 3 combinations of the test binlog.flashback . I think that that one should be fixed first, before trying to fix the output differences.

Marko Mäkelä added a comment - 2019-04-15 15:32 For some reason, today I was unable to repeat any LeakSanitizer warnings on 10.1 when using cmake -DWITH_ASAN=ON -DWITH_SAFEMALLOC=OFF . But I was able to repeat the leaks on 10.2. I see that I initially reported the leaks on 5.5. I do not see any related fixes to the files since then, so I would expect the leaks to remain present. Some leaks seem to be related to the flashback changes that were introduced in MariaDB 10.2.4 by MDEV-10570 .

Sujatha Sivakumar (Inactive) added a comment - 2019-04-17 10:38 In the above report there are three different kinds of leaks were observed. In 5.5: ===== CURRENT_TEST: rpl.rpl_row_mysqlbinlog ================================================================ ==8988==ERROR: LeakSanitizer: detected memory leaks Direct leak of 112 byte(s) in 1 object(s) allocated from: #0 0x4eff87 in __interceptor_malloc (/dev/shm/5.5/client/mysqlbinlog+0x4eff87) #1 0x60eaab in my_malloc /mariadb/5.5/mysys/my_malloc.c:41:10 #2 0x5300dd in Log_event::read_log_event(char const*, unsigned int, char const* , Format_description_log_event const , char) /mariadb/5.5/sql/log_event.cc:1568:12 #3 0x564a9c in dump_remote_log_entries(st_print_event_info*, char const*) /mariadb/5.5/client/mysqlbinlog.cc:1978:17 #4 0x536408 in dump_log_entries(char const*) /mariadb/5.5/client/mysqlbinlog.cc:1794:21 #5 0x535e4b in main /mariadb/5.5/client/mysqlbinlog.cc:2505:18 #6 0x7f71ea0a1b16 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x22b16) This issue exists only in 5.5. It is specific to fake rotate events while reading binary log from a remote server. This issues is already fixed in MariaDB 10.0.23 and higher versions as part of commit c3018b0ff4fb02c029787d03867adf0530607bab 10.2 and above: ============= 1) Leak in Log_event::read_log_event(char const*, unsigned int, char const**, Format_description_log_event const*, char) File: sql/log_event.cc:2150 2) read_remote_annotate_event(unsigned char*, unsigned long, char const**) File: client/mysqlbinlog.cc:194 These were caused because of flashback feature and its related bug fixes. To reproduce the failures use: ASAN_OPTIONS=abort_on_error=1 ./mtr --parallel=auto binlog.binlog_row_mysqlbinlog_verbose binlog_encryption.binlog_row_annotate binlog.binlog_row_mysqlbinlog_options binlog.binlog_row_annotate encryption.tempfiles binlog.binlog_mysqlbinlog_row_myisam binlog.binlog_mysqlbinlog_row binlog.binlog_mysqlbinlog_base64 binlog_encryption.rpl_skip_replication binlog.binlog_mysqlbinlog_row_innodb binlog.flashback

Sujatha Sivakumar (Inactive) added a comment - 2019-04-17 10:42 Hello Andrei, Can you please review two different patches for MDEV-17260 fix. For 5.5: ====== http://buildbot.askmonty.org/buildbot/grid?category=main&branch=bb-5.5-sujatha https://github.com/MariaDB/server/commit/8b066a3d234e17249ca638a76cdd48a279633d34 For 10.2: ======= http://buildbot.askmonty.org/buildbot/grid?category=main&branch=bb-10.2-sujatha https://github.com/MariaDB/server/commit/fdf298c036fa0bb68fe3e2f0bfd28bf3b3f466d1 Thank you

Sujatha Sivakumar (Inactive) added a comment - 2019-04-24 06:40 Hello Andrei, Thank you for the review comments. I have added a test case which covers flashback and remote options. I verified that the newly added test case fails without fix as shown below. CURRENT_TEST: binlog.flashback ================================================================= ==26328==ERROR: LeakSanitizer: detected memory leaks Direct leak of 48 byte(s) in 1 object(s) allocated from: #0 0x7f496b046b50 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb50) #1 0x55a508dd102b in my_malloc /home/sujatha/bug_repo/ MDEV-17260 -10.2/mysys/my_malloc.c:101 #2 0x55a508c8d57e in read_remote_annotate_event(unsigned char*, unsigned long, char const**) /home/sujatha/bug_repo/ MDEV-17260 -10.2/client/mysqlbinlog.cc:194 #3 0x55a508c93c69 in handle_event_text_mode /home/sujatha/bug_repo/ MDEV-17260 -10.2/client/mysqlbinlog.cc:2285 #4 0x55a508c95fcf in dump_remote_log_entries /home/sujatha/bug_repo/ MDEV-17260 -10.2/client/mysqlbinlog.cc:2608 #5 0x55a508c9351b in dump_log_entries /home/sujatha/bug_repo/ MDEV-17260 -10.2/client/mysqlbinlog.cc:2162 #6 0x55a508c97b5b in main /home/sujatha/bug_repo/ MDEV-17260 -10.2/client/mysqlbinlog.cc:3098 #7 0x7f49698b4b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) SUMMARY: AddressSanitizer: 48 byte(s) leaked in 1 allocation(s). Aborted (core dumped) mysqltest: At line 355: exec of '/home/sujatha/bug_repo/ MDEV-17260 -10.2/bld/client/mysqlbinlog --defaults-file=/home/sujatha/bug_repo/ MDEV-17260 -10.2/bld/mysql-test/var/2/my.cnf --local-load=/home/sujatha/bug_repo/ MDEV-17260 -10.2/bld/mysql-test/var/tmp/2 -vv -B --read-from-remote-server --user=root --host=127.0.0.1 --port=16020 master-bin.000002> /home/sujatha/bug_repo/ MDEV-17260 -10.2/bld/mysql-test/var/2/tmp/mysqlbinlog_row_flashback_4.sql' failed, error: 34304, status: 134, errno: 11 Output from before failure: f With fix it passes. http://buildbot.askmonty.org/buildbot/grid?category=main&branch=bb-10.2-sujatha https://github.com/MariaDB/server/commit/8ae7a5eb03725441393c353e4e203f80b666c035 Please review the new set of changes.

Sujatha Sivakumar (Inactive) added a comment - 2019-04-26 06:40 At the time for merging 10.2 patch into 10.3 please consider the following patch. 10.3: Changes. https://github.com/MariaDB/server/commit/ddfd6297f8f7cf2009d326ae825c75c918fe8ef3

Marko Mäkelä added a comment - 2019-04-28 07:55 Merged to 10.3