InnoDB: Failing assertion: new_state->key_version != ENCRYPTION_KEY_VERSION_INVALID on dynamic change of encryption variables

--source include/have_xtradb.inc

set global innodb_encrypt_tables = on;

set global innodb_encryption_threads = 1;

set global innodb_background_scrub_data_check_interval = 1;

select sleep(3);

2015-05-13 18:22:13 7f542dfff700  InnoDB: Assertion failure in thread 139999525730048 in file fil0crypt.cc line 1014

InnoDB: Failing assertion: new_state->key_version != ENCRYPTION_KEY_VERSION_INVALID

InnoDB: We intentionally generate a memory trap.

#5  0x00007f5443a703e0 in *__GI_abort () at abort.c:92

#6  0x00007f54469ed958 in fil_crypt_get_key_state (new_state=0x7f542dffedb0) at 10.1/storage/xtradb/fil/fil0crypt.cc:1014

#7  0x00007f54469ee200 in fil_crypt_space_needs_rotation (space=0, key_state=0x7f542dffedb0, recheck=0x7f542dffed9b) at 10.1/storage/xtradb/fil/fil0crypt.cc:1307

#8  0x00007f54469ee847 in fil_crypt_find_space_to_rotate (key_state=0x7f542dffedb0, state=0x7f542dffedc0, recheck=0x7f542dffed9b) at 10.1/storage/xtradb/fil/fil0crypt.cc:1583

#9  0x00007f54469efd5e in fil_crypt_thread (arg=0x0) at 10.1/storage/xtradb/fil/fil0crypt.cc:2220

#10 0x00007f5445a81b50 in start_thread (arg=<optimized out>) at pthread_create.c:304

#11 0x00007f5443b1695d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112