Looks like a dir-per-db feature regression:
http://jenkins.percona.com/job/percona-server-5.6-trunk/663/BUILD_TYPE=debug,Host=debian-wheezy-x64/consoleText:
tokudb.type_timestamp_explicit w2 [ fail ]
...
At line 14: query 'CREATE TABLE t1 (a int, t timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP)' failed: 2013: Lost connection to MySQL server during query
...
*** glibc detected *** /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/build/sql/mysqld-debug: free(): invalid next size (fast): 0x0000000002c32090 ***
...
Program terminated with signal 6, Aborted.
#0 __pthread_kill (threadid=<optimized out>, signo=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:63
63 ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c: No such file or directory.
#0 __pthread_kill (threadid=<optimized out>, signo=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:63
#1 0x0000000000b1acd1 in my_write_core (sig=6) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/mysys/stacktrace.c:422
#2 0x000000000077eb9a in handle_fatal_signal (sig=6) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/signal_handler.cc:236
#3 <signal handler called>
#4 0x00007f07e6621125 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#5 0x00007f07e66243a0 in *__GI_abort () at abort.c:92
#6 0x00007f07e665b35b in __libc_message (do_abort=<optimized out>, fmt=<optimized out>) at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#7 0x00007f07e6664bb6 in malloc_printerr (action=3, str=0x7f07e6741818 "free(): invalid next size (fast)", ptr=<optimized out>) at malloc.c:6312
#8 0x00007f07e666995c in *__GI___libc_free (mem=<optimized out>) at malloc.c:3738
#9 0x00007f07dfc4f1f1 in os_free (p=0x2c32090) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/portability/os_malloc.cc:275
#10 0x00007f07dfc4e3e1 in toku_free (p=0x2c32090) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/portability/memory.cc:336
#11 0x00007f07dfb41bbb in std::unique_ptr<char [], void (*)(void*)>::~unique_ptr (this=0x7f07a869d140, __in_chrg=<optimized out>) at /usr/include/c++/4.7/bits/unique_ptr.h:323
#12 0x00007f07dfbb1161 in toku_create_subdirs_if_needed (path=0x2c32110 "/mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/build/mysql-test/var/2/mysqld.1/data//./_test_t1_status_6_1_1d.tokudb") at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/ft/ft-ops.cc:2685
#13 0x00007f07dfbb11ab in ft_create_file (ft_handle=0x2c2f260, fname=0x2c32110 "/mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/build/mysql-test/var/2/mysqld.1/data//./_test_t1_status_6_1_1d.tokudb", fdp=0x7f07a869d228) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/ft/ft-ops.cc:2694
#14 0x00007f07dfbb1a17 in ft_handle_open (ft_h=0x2c2f260, fname_in_env=0x2c31960 "./_test_t1_status_6_1_1d.tokudb", is_create=1, only_create=16384, cachetable=0x2a1cb50, txn=0x2c2f600, use_filenum=..., use_dictionary_id=..., max_acceptable_lsn=...) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/ft/ft-ops.cc:2904
#15 0x00007f07dfbb1ff3 in toku_ft_handle_open (t=0x2c2f260, fname_in_env=0x2c31960 "./_test_t1_status_6_1_1d.tokudb", is_create=1, only_create=16384, cachetable=0x2a1cb50, txn=0x2c2f600) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/ft/ft-ops.cc:3040
#16 0x00007f07dfb49eb2 in toku_db_open_iname (db=0x2c2f2c0, txn=0x2c2f500, iname_in_env=0x2c31960 "./_test_t1_status_6_1_1d.tokudb", flags=0, mode=0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/src/ydb_db.cc:486
#17 0x00007f07dfb498f9 in toku_db_open (db=0x2c2f2c0, txn=0x2c2f500, fname=0x2c2ee50 "./test/t1-status", dbname=0x0, dbtype=DB_BTREE, flags=16385, mode=0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/src/ydb_db.cc:366
#18 0x00007f07dfb4b1c9 in locked_db_open (db=0x2c2f2c0, txn=0x2c2eec0, fname=0x2c2ee50 "./test/t1-status", dbname=0x0, dbtype=DB_BTREE, flags=16385, mode=0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/PerconaFT/src/ydb_db.cc:868
#19 0x00007f07dfaf2c85 in tokudb::metadata::create (env=0x2a1c280, status_db_ptr=0x7f07a869e1f8, name=0x2c2ee50 "./test/t1-status", txn=0x2c2eec0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/tokudb_status.h:204
#20 0x00007f07dfb09f05 in ha_tokudb::create (this=0x2c2d1e0, name=0x7f07a86a08b0 "./test/t1", form=0x7f07a869e880, create_info=0x7f07a86a11d0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/tokudb/ha_tokudb.cc:7313
#21 0x00000000006922c0 in handler::ha_create (this=0x2c2d1e0, name=0x7f07a86a08b0 "./test/t1", form=0x7f07a869e880, info=0x7f07a86a11d0) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/handler.cc:4776
#22 0x0000000000693203 in ha_create_table (thd=0x2ac0d00, path=0x7f07a86a08b0 "./test/t1", db=0x2ba93f8 "test", table_name=0x2ba8e60 "t1", create_info=0x7f07a86a11d0, update_create_info=false, is_temp_table=false) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/handler.cc:5129
#23 0x00000000009185ee in rea_create_table (thd=0x2ac0d00, path=0x7f07a86a08b0 "./test/t1", db=0x2ba93f8 "test", table_name=0x2ba8e60 "t1", create_info=0x7f07a86a11d0, create_fields=..., keys=0, key_info=0x2ba9ae8, file=0x2c28a70, no_ha_table=false) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/unireg.cc:527
#24 0x00000000008a9bd2 in create_table_impl (thd=0x2ac0d00, db=0x2ba93f8 "test", table_name=0x2ba8e60 "t1", path=0x7f07a86a08b0 "./test/t1", create_info=0x7f07a86a11d0, alter_info=0x7f07a86a0c70, internal_tmp_table=false, select_field_count=0, no_ha_table=false, is_trans=0x7f07a86a0b3e, key_info=0x7f07a86a0ab8, key_count=0x7f07a86a0ab4) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_table.cc:5151
#25 0x00000000008aa0de in mysql_create_table_no_lock (thd=0x2ac0d00, db=0x2ba93f8 "test", table_name=0x2ba8e60 "t1", create_info=0x7f07a86a11d0, alter_info=0x7f07a86a0c70, select_field_count=0, is_trans=0x7f07a86a0b3e) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_table.cc:5267
#26 0x00000000008aa220 in mysql_create_table (thd=0x2ac0d00, create_table=0x2ba8e98, create_info=0x7f07a86a11d0, alter_info=0x7f07a86a0c70) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_table.cc:5319
#27 0x00000000008378cd in mysql_execute_command (thd=0x2ac0d00) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_parse.cc:3520
#28 0x0000000000840f82 in mysql_parse (thd=0x2ac0d00, rawbuf=0x2ba8d20 "CREATE TABLE t1 (a int, t timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP)", length=99, parser_state=0x7f07a86a1f30) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_parse.cc:6972
#29 0x0000000000832a3f in dispatch_command (command=COM_QUERY, thd=0x2ac0d00, packet=0x2ba0991 "CREATE TABLE t1 (a int, t timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP)", packet_length=99) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_parse.cc:1441
#30 0x00000000008318e8 in do_command (thd=0x2ac0d00) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_parse.cc:1053
#31 0x00000000007f7dd3 in do_handle_one_connection (thd_arg=0x2ac0d00) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_connect.cc:1541
#32 0x00000000007f7854 in handle_one_connection (arg=0x2ac0d00) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/sql/sql_connect.cc:1444
#33 0x0000000000e7c223 in pfs_spawn_thread (arg=0x2b17940) at /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/storage/perfschema/pfs.cc:1860
#34 0x00007f07e83e0b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#35 0x00007f07e66ccfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#36 0x0000000000000000 in ?? ()
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Tracked in https:/