miguel@ural:~/tmp/5.7 $ valgrind bin/mysqld  --basedir=/home/miguel/tmp/5.7/ --datadir=/home/miguel/tmp/5.7/data --socket=/tmp/mysql57.socket  --performance-schema-digests-size=1
==16159== Memcheck, a memory error detector
==16159== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==16159== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==16159== Command: bin/mysqld --basedir=/home/miguel/tmp/5.7/ --datadir=/home/miguel/tmp/5.7/data --socket=/tmp/mysql57.socket --performance-schema-digests-size=1
==16159== 
2017-02-02T23:12:28.396638Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2017-02-02T23:12:28.435103Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
2017-02-02T23:12:28.938063Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-02-02T23:12:28.955279Z 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled
2017-02-02T23:12:28.972127Z 0 [Note] bin/mysqld (mysqld 5.7.18-debug) starting as process 16159 ...
2017-02-02T23:12:29.351790Z 0 [Note] InnoDB: PUNCH HOLE support available
2017-02-02T23:12:29.360867Z 0 [Note] InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
2017-02-02T23:12:29.361596Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-02-02T23:12:29.362342Z 0 [Note] InnoDB: Uses event mutexes
2017-02-02T23:12:29.363082Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-02-02T23:12:29.364295Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-02-02T23:12:29.365328Z 0 [Note] InnoDB: Using Linux native AIO
2017-02-02T23:12:29.532767Z 0 [Note] InnoDB: Number of pools: 1
2017-02-02T23:12:29.576818Z 0 [Note] InnoDB: Using CPU crc32 instructions
2017-02-02T23:12:29.648336Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2017-02-02T23:12:31.888457Z 0 [Note] InnoDB: Completed initialization of buffer pool
2017-02-02T23:12:31.928512Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2017-02-02T23:12:32.188076Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2017-02-02T23:12:32.264162Z 0 [Note] InnoDB: Log scan progressed past the checkpoint lsn 1650766
2017-02-02T23:12:32.266821Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 1650775
2017-02-02T23:12:32.274158Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 1650775
2017-02-02T23:12:32.276822Z 0 [Note] InnoDB: Database was not shutdown normally!
2017-02-02T23:12:32.277543Z 0 [Note] InnoDB: Starting crash recovery.
2017-02-02T23:12:34.900929Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2017-02-02T23:12:34.902064Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2017-02-02T23:12:34.910348Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2017-02-02T23:12:35.138231Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2017-02-02T23:12:35.479253Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2017-02-02T23:12:35.480285Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2017-02-02T23:12:35.620674Z 0 [Note] InnoDB: 5.7.18 started; log sequence number 1650775
2017-02-02T23:12:35.668780Z 0 [Note] InnoDB: Loading buffer pool(s) from /home/miguel/tmp/5.7/data/ib_buffer_pool
2017-02-02T23:12:35.740259Z 0 [Note] Plugin 'FEDERATED' is disabled.
2017-02-02T23:12:36.104221Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170202 21:12:36
2017-02-02T23:12:36.690890Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
2017-02-02T23:12:36.741423Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2017-02-02T23:12:36.748090Z 0 [Note] IPv6 is available.
2017-02-02T23:12:36.750935Z 0 [Note]   - '::' resolves to '::';
2017-02-02T23:12:36.757226Z 0 [Note] Server socket created on IP: '::'.
2017-02-02T23:12:37.857297Z 0 [Note] Event Scheduler: Loaded 0 events
2017-02-02T23:12:37.884265Z 0 [Note] bin/mysqld: ready for connections.
Version: '5.7.18-debug'  socket: '/tmp/mysql57.socket'  port: 3306  Source distribution PULL: 2017-FEB-01
2017-02-02T23:12:37.885020Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. 
2017-02-02T23:12:37.885993Z 0 [Note] Beginning of list of non-natively partitioned tables
2017-02-02T23:12:39.168806Z 0 [Note] End of list of non-natively partitioned tables
==16159== Thread 28:
==16159== Invalid read of size 4
==16159==    at 0x1D50DF8: my_atomic_load32(int volatile*) (gcc_sync.h:78)
==16159==    by 0x1D5D754: PFS_atomic::load_u32(unsigned int*) (pfs_atomic.h:45)
==16159==    by 0x1D6316B: pfs_lock::is_free() (pfs_lock.h:115)
==16159==    by 0x1D62C76: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:274)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd340 is 0 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid read of size 4
==16159==    at 0x1D50E01: my_atomic_load32(int volatile*) (gcc_sync.h:78)
==16159==    by 0x1D5D754: PFS_atomic::load_u32(unsigned int*) (pfs_atomic.h:45)
==16159==    by 0x1D6316B: pfs_lock::is_free() (pfs_lock.h:115)
==16159==    by 0x1D62C76: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:274)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd340 is 0 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid read of size 4
==16159==    at 0x1D50DF8: my_atomic_load32(int volatile*) (gcc_sync.h:78)
==16159==    by 0x1D5D754: PFS_atomic::load_u32(unsigned int*) (pfs_atomic.h:45)
==16159==    by 0x1D63197: pfs_lock::free_to_dirty(pfs_dirty_state*) (pfs_lock.h:140)
==16159==    by 0x1D62C9A: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:276)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd340 is 0 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid read of size 4
==16159==    at 0x1D50E01: my_atomic_load32(int volatile*) (gcc_sync.h:78)
==16159==    by 0x1D5D754: PFS_atomic::load_u32(unsigned int*) (pfs_atomic.h:45)
==16159==    by 0x1D63197: pfs_lock::free_to_dirty(pfs_dirty_state*) (pfs_lock.h:140)
==16159==    by 0x1D62C9A: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:276)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd340 is 0 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid read of size 4
==16159==    at 0x1D624BA: my_atomic_cas32(int volatile*, int*, int) (gcc_sync.h:24)
==16159==    by 0x1D6314C: PFS_atomic::cas_u32(unsigned int*, unsigned int*, unsigned int) (pfs_atomic.h:120)
==16159==    by 0x1D631CD: pfs_lock::free_to_dirty(pfs_dirty_state*) (pfs_lock.h:150)
==16159==    by 0x1D62C9A: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:276)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd340 is 0 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid write of size 2
==16159==    at 0x4C3149B: memmove (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D62CC4: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:279)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd344 is 4 bytes after a block of size 512 alloc'd
==16159==    at 0x4C2CD69: memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x4C2CE67: posix_memalign (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1D6C9E1: pfs_malloc(PFS_builtin_memory_class*, unsigned long, int) (pfs_global.cc:59)
==16159==    by 0x1D6CB40: pfs_malloc_array(PFS_builtin_memory_class*, unsigned long, unsigned long, int) (pfs_global.cc:136)
==16159==    by 0x1D6264F: init_digest(PFS_global_param const*) (pfs_digest.cc:75)
==16159==    by 0x1D7F506: initialize_performance_schema(PFS_global_param*) (pfs_server.cc:141)
==16159==    by 0xF0E0A6: mysqld_main(int, char**) (mysqld.cc:4469)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 
==16159== Invalid write of size 8
==16159==    at 0x1D62CF0: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:287)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)
==16159==  Address 0x6bdd508 is 16 bytes after a block of size 24 free'd
==16159==    at 0x4C2C20A: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1616997: __gnu_cxx::new_allocator<st_mysql_show_var>::deallocate(st_mysql_show_var*, unsigned long) (new_allocator.h:110)
==16159==    by 0x1615FA0: __gnu_cxx::__alloc_traits<std::allocator<st_mysql_show_var> >::deallocate(std::allocator<st_mysql_show_var>&, st_mysql_show_var*, unsigned long) (alloc_traits.h:133)
==16159==    by 0x1615693: std::_Vector_base<st_mysql_show_var, std::allocator<st_mysql_show_var> >::_M_deallocate(st_mysql_show_var*, unsigned long) (stl_vector.h:178)
==16159==    by 0x16151D9: std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> >::_M_insert_aux(__gnu_cxx::__normal_iterator<st_mysql_show_var*, std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> > >, st_mysql_show_var const&) (vector.tcc:394)
==16159==    by 0x161453B: std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> >::push_back(st_mysql_show_var const&) (stl_vector.h:926)
==16159==    by 0x15FDEBC: add_status_vars(st_mysql_show_var const*) (sql_show.cc:2606)
==16159==    by 0xF0A4F7: init_common_variables() (mysqld.cc:2764)
==16159==    by 0xF0E1AC: mysqld_main(int, char**) (mysqld.cc:4556)
==16159==    by 0xF06405: main (main.cc:25)
==16159==  Block was alloc'd at
==16159==    at 0x4C2B1EC: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16159==    by 0x1616AC6: __gnu_cxx::new_allocator<st_mysql_show_var>::allocate(unsigned long, void const*) (new_allocator.h:104)
==16159==    by 0x16162BB: __gnu_cxx::__alloc_traits<std::allocator<st_mysql_show_var> >::allocate(std::allocator<st_mysql_show_var>&, unsigned long) (alloc_traits.h:130)
==16159==    by 0x1615B43: std::_Vector_base<st_mysql_show_var, std::allocator<st_mysql_show_var> >::_M_allocate(unsigned long) (stl_vector.h:170)
==16159==    by 0x16150AE: std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> >::_M_insert_aux(__gnu_cxx::__normal_iterator<st_mysql_show_var*, std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> > >, st_mysql_show_var const&) (vector.tcc:353)
==16159==    by 0x161453B: std::vector<st_mysql_show_var, std::allocator<st_mysql_show_var> >::push_back(st_mysql_show_var const&) (stl_vector.h:926)
==16159==    by 0x15FDEBC: add_status_vars(st_mysql_show_var const*) (sql_show.cc:2606)
==16159==    by 0xF0A4F7: init_common_variables() (mysqld.cc:2764)
==16159==    by 0xF0E1AC: mysqld_main(int, char**) (mysqld.cc:4556)
==16159==    by 0xF06405: main (main.cc:25)
==16159== 

valgrind: m_mallocfree.c:303 (get_bszB_as_is): Assertion 'bszB_lo == bszB_hi' failed.
valgrind: Heap block lo/hi size mismatch: lo = 640, hi = 0.
This is probably caused by your program erroneously writing past the
end of a heap block and corrupting heap metadata.  If you fix any
invalid writes reported by Memcheck, this assertion failure will
probably go away.  Please try that before reporting this as a bug.


host stacktrace:
==16159==    at 0x38085208: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x38085324: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x380854B1: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x38092F44: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x3807E773: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x3807CFF3: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x3808124A: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x3807C36B: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==16159==    by 0x80BF2DF0D: ???
==16159==    by 0x80D856F1F: ???
==16159==    by 0x80203771F: ???
==16159==    by 0x1D62CE4: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:285)
==16159==    by 0x80203771F: ???
==16159==    by 0x30FFF: ???
==16159==    by 0x80D3CEFFF: ???
==16159==    by 0x4988: ???
==16159==    by 0xCC78: ???

sched status:
  running_tid=28

Thread 1: status = VgTs_WaitSys (lwpid 16159)
==16159==    at 0x642448D: ??? (in /usr/lib/libc-2.24.so)
==16159==    by 0x16C3975: Mysqld_socket_listener::listen_for_connection_event() (socket_connection.cc:851)
==16159==    by 0xF17316: Connection_acceptor<Mysqld_socket_listener>::connection_event_loop() (connection_acceptor.h:66)
==16159==    by 0xF0EF9E: mysqld_main(int, char**) (mysqld.cc:5045)
==16159==    by 0xF06405: main (main.cc:25)

Thread 2: status = VgTs_WaitSys (lwpid 16160)
==16159==    at 0x6378F76: sigwaitinfo (in /usr/lib/libc-2.24.so)
==16159==    by 0x18D0485: timer_notify_thread_func (posix_timers.c:77)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 3: status = VgTs_WaitSys (lwpid 16161)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 4: status = VgTs_WaitSys (lwpid 16162)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 5: status = VgTs_WaitSys (lwpid 16163)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 6: status = VgTs_WaitSys (lwpid 16164)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 7: status = VgTs_WaitSys (lwpid 16165)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 8: status = VgTs_WaitSys (lwpid 16166)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 9: status = VgTs_WaitSys (lwpid 16167)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 10: status = VgTs_WaitSys (lwpid 16168)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 11: status = VgTs_WaitSys (lwpid 16169)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 12: status = VgTs_WaitSys (lwpid 16170)
==16159==    at 0x5054674: ??? (in /usr/lib/libaio.so.1.0.1)
==16159==    by 0x19D5F1E: LinuxAIOHandler::collect() (os0file.cc:2500)
==16159==    by 0x19D63D5: LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) (os0file.cc:2646)
==16159==    by 0x19D654D: os_aio_linux_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:2702)
==16159==    by 0x19DAE51: os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) (os0file.cc:6259)
==16159==    by 0x1C3A206: fil_aio_wait(unsigned long) (fil0fil.cc:5827)
==16159==    by 0x1AE50A1: io_handler_thread (srv0start.cc:308)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 13: status = VgTs_WaitSys (lwpid 16171)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x1BC9631: pc_sleep_if_needed(unsigned long, long) (buf0flu.cc:2690)
==16159==    by 0x1BCA7C8: buf_flush_page_cleaner_coordinator (buf0flu.cc:3191)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 14: status = VgTs_WaitSys (lwpid 16174)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x19AE479: lock_wait_timeout_thread (lock0wait.cc:501)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 15: status = VgTs_WaitSys (lwpid 16175)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x1ADFBC1: srv_error_monitor_thread (srv0srv.cc:1741)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 16: status = VgTs_WaitSys (lwpid 16176)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x1ADF6A5: srv_monitor_thread (srv0srv.cc:1575)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 17: status = VgTs_WaitSys (lwpid 16177)
==16159==    at 0x4E4779D: ??? (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E6A47: os_thread_sleep(unsigned long) (os0thread.cc:279)
==16159==    by 0x1AE0EE0: srv_master_sleep() (srv0srv.cc:2320)
==16159==    by 0x1AE105E: srv_master_thread (srv0srv.cc:2367)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 18: status = VgTs_WaitSys (lwpid 16178)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1AE19F7: srv_purge_coordinator_suspend(srv_slot_t*, unsigned long) (srv0srv.cc:2666)
==16159==    by 0x1AE1F25: srv_purge_coordinator_thread (srv0srv.cc:2782)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 19: status = VgTs_WaitSys (lwpid 16179)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1AE1526: srv_worker_thread (srv0srv.cc:2510)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 20: status = VgTs_WaitSys (lwpid 16180)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1AE1526: srv_worker_thread (srv0srv.cc:2510)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 21: status = VgTs_WaitSys (lwpid 16181)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1AE1526: srv_worker_thread (srv0srv.cc:2510)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 22: status = VgTs_WaitSys (lwpid 16182)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1BC0663: buf_dump_thread (buf0dump.cc:782)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 23: status = VgTs_WaitSys (lwpid 16183)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x1C24428: dict_stats_thread (dict0stats_bg.cc:428)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 24: status = VgTs_WaitSys (lwpid 16184)
==16159==    at 0x4E444B8: pthread_cond_timedwait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E5D88: os_event::timed_wait(timespec const*) (os0event.cc:285)
==16159==    by 0x19E60A7: os_event::wait_time_low(unsigned long, long) (os0event.cc:412)
==16159==    by 0x19E62B9: os_event_wait_time_low(os_event*, unsigned long, long) (os0event.cc:517)
==16159==    by 0x1B4FD92: ib_wqueue_timedwait(ib_wqueue_t*, long) (ut0wqueue.cc:160)
==16159==    by 0x1C7E22C: fts_optimize_thread(void*) (fts0opt.cc:3040)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 25: status = VgTs_WaitSys (lwpid 16185)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x19E651D: os_event::wait() (os0event.cc:165)
==16159==    by 0x19E5F09: os_event::wait_low(long) (os0event.cc:335)
==16159==    by 0x19E62DE: os_event_wait_low(os_event*, long) (os0event.cc:534)
==16159==    by 0x1BAAEB1: buf_resize_thread (buf0buf.cc:3016)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 26: status = VgTs_WaitSys (lwpid 16186)
==16159==    at 0x4E47C37: do_sigwait (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x4E47CAC: sigwait (in /usr/lib/libpthread-2.24.so)
==16159==    by 0xF0966C: signal_hand (mysqld.cc:2101)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 27: status = VgTs_WaitSys (lwpid 16187)
==16159==    at 0x4E4410F: pthread_cond_wait@@GLIBC_2.3.2 (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x18C6DB5: native_cond_wait (thr_cond.h:140)
==16159==    by 0x18C6F1B: safe_cond_wait (thr_cond.c:48)
==16159==    by 0x17ECAC8: my_cond_wait (thr_cond.h:193)
==16159==    by 0x17ECDC2: inline_mysql_cond_wait(st_mysql_cond*, st_mysql_mutex*, char const*, unsigned int) (mysql_thread.h:1184)
==16159==    by 0x17EF720: compress_gtid_table (rpl_gtid_persist.cc:852)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)

Thread 28: status = VgTs_Runnable (lwpid 16192)
==16159==    at 0x1D62D02: find_or_create_digest(PFS_thread*, sql_digest_storage const*, char const*, unsigned int) (pfs_digest.cc:288)
==16159==    by 0x1D59DCD: pfs_end_statement_v1 (pfs.cc:5408)
==16159==    by 0x1590409: inline_mysql_end_statement(PSI_statement_locker*, Diagnostics_area*) (mysql_statement.h:228)
==16159==    by 0x1595902: dispatch_command(THD*, COM_DATA const*, enum_server_command) (sql_parse.cc:1909)
==16159==    by 0x15931E2: do_command(THD*) (sql_parse.cc:999)
==16159==    by 0x16C1202: handle_connection (connection_handler_per_thread.cc:300)
==16159==    by 0x1D52D8A: pfs_spawn_thread (pfs.cc:2188)
==16159==    by 0x4E3E453: start_thread (in /usr/lib/libpthread-2.24.so)
==16159==    by 0x642D7DE: clone (in /usr/lib/libc-2.24.so)