safe_mutex: Trying to lock mutex at sql/sql_acl.cc, line 10902, when the mutex was already locked at sql/sql_acl.cc, line 9907 in thread T@7

131023  2:39:21 [ERROR] mysqld got signal 6 ;

#5  0x00007f6733eb3b8b in __GI_abort () at abort.c:91

#6  0x0000000000d151a2 in safe_mutex_lock (mp=0x7f6733428b40, my_flags=0, file=0xde4950 "sql/sql_acl.cc", line=10902) at mysys/thr_mutex.c:266

#7  0x00000000005a05c8 in inline_mysql_mutex_lock (that=0x7f6733428b40, src_file=0xde4950 "sql/sql_acl.cc", src_line=10902) at include/mysql/psi/mysql_thread.h:618

#8  0x00000000005bf93e in find_mpvio_user (mpvio=0x7f67356243f0) at sql/sql_acl.cc:10902

#9  0x00000000005c0e4a in parse_client_handshake_packet (mpvio=0x7f67356243f0, buff=0x7f6735624070, pkt_len=65) at sql/sql_acl.cc:11294

#10 0x00000000005c1550 in server_mpvio_read_packet (param=0x7f67356243f0, buf=0x7f6735624070) at sql/sql_acl.cc:11494

#11 0x00000000005c29e2 in native_password_authenticate (vio=0x7f67356243f0, info=0x7f6735624408) at sql/sql_acl.cc:12030

#12 0x00000000005c1bf1 in do_auth_once (thd=0x7f672f7e9070, auth_plugin_name=0x1466d40, mpvio=0x7f67356243f0) at sql/sql_acl.cc:11663

#13 0x00000000005c1f0f in acl_authenticate (thd=0x7f672f7e9070, connect_errors=0, com_change_user_pkt_len=0) at sql/sql_acl.cc:11762

#14 0x000000000074321d in check_connection (thd=0x7f672f7e9070) at sql/sql_connect.cc:972

#15 0x0000000000743373 in login_connection (thd=0x7f672f7e9070) at sql/sql_connect.cc:1029

#16 0x0000000000743852 in thd_prepare_connection (thd=0x7f672f7e9070) at sql/sql_connect.cc:1189

#17 0x0000000000743a97 in do_handle_one_connection (thd_arg=0x7f672f7e9070) at sql/sql_connect.cc:1257

#18 0x0000000000743827 in handle_one_connection (arg=0x7f672f7e9070) at sql/sql_connect.cc:1181

#19 0x00000000009ab186 in pfs_spawn_thread (arg=0x7f672f76a5d0) at storage/perfschema/pfs.cc:1015

#20 0x00007f673483ce9a in start_thread (arg=0x7f6735625700) at pthread_create.c:308

#21 0x00007f6733f6dcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

revision-id: sergii@pisem.net-20131020232702-db6ekuk4lz0itg1b

revno: 3892

branch-nick: 10.0-serg

BUILD/compile-pentium-debug-max-no-ndb

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

CREATE ROLE m;

SET ROLE m;

DROP ROLE m;

SELECT * FROM INFORMATION_SCHEMA . ENABLED_ROLES;

--disconnect con1

--source include/wait_until_disconnected.inc

--connect (con2,localhost,root,,)

SELECT 1;