[Dovecot] master:Error @2.0 TLS login, "Too large auth data_size sent"

[PGNet Dev]

limit coredumpsize unlimited
cd /data/mail/Domains/my.domain.com/Accounts/testuser
service dovecot-custom restart

 Oct 15 09:23:37 master: Info: Dovecot v2.0.alpha1 starting up

login with TBird,

 Oct 15 09:25:12 master: Error: service(imap): child 6626 killed with
signal 11 (core dumped)
 Oct 15 09:25:12 mx kernel: imap[6626]: segfault at 0 ip
00007f9d752a5133 sp 00007fffe2288c50 error 4 in
lib10_quota_plugin.so[7f9d7529b000+e000]

gdb /usr/local/libexec/dovecot/imap ./core

(gdb) bt full
#0  0x00007f9d752a5133 in maildir_quota_namespace_added
(quota=0x62fe30, ns=0x630270) at quota-maildir.c:786
No locals.
#1  0x00007f9d752a1283 in quota_add_user_namespace (quota=0x62fe30,
ns=0x630270) at quota.c:575
	backends = <value optimized out>
	path = 0x61fa30 "/data/mail/Domains/my.domain.com/Accounts/testuser"
	path2 = <value optimized out>
	i = 0
	j = 8
#2  0x00007f9d752a5900 in quota_mailbox_list_created (list=0x630348)
at quota-storage.c:569
	qlist = <value optimized out>
	quota = (struct quota *) 0x7f9d752a785f
	root = (struct quota_root *) 0x630270
#3  0x00007f9d760c2d75 in mailbox_list_create (driver=<value optimized
out>, ns=0x630270, set=0x7fffe2288df0, flags=<value optimized out>,
error_r=0x7fffe2288ed8) at mailbox-list.c:180
	list = <value optimized out>
	path = <value optimized out>
	idx = 2
	__PRETTY_FUNCTION__ = "mailbox_list_create"
#4  0x00007f9d760bfa46 in mail_storage_create (ns=0x630270,
driver=0x61f820 "maildir", flags=<value optimized out>,
error_r=0x7fffe2288ed8) at mail-storage.c:271
	storage_class = (struct mail_storage *) 0x7f9d76349be0
	storage = <value optimized out>
	list_set = {layout = 0x61f876 "fs", root_dir = 0x61f828
"/data/mail/Domains/my.domain.com/Accounts/testuser", index_dir = 0x0,
control_dir = 0x0, alt_dir = 0x0,
  inbox_path = 0x61f828
"/data/mail/Domains/my.domain.com/Accounts/testuser",
subscription_fname = 0x7f9d76134e06 "subscriptions", dir_guid_fname =
0x7f9d76131e6c "dovecot-dir-guid",
  maildir_name = 0x0, mailbox_dir_name = 0x0}
	data = 0x63c5a8
"maildir:/data/mail/Domains/my.domain.com/Accounts/testuser:LAYOUT=fs"
	p = <value optimized out>
	__PRETTY_FUNCTION__ = "mail_storage_create"
#5  0x00007f9d760badb4 in mail_namespaces_init (user=0x63b2f8,
error_r=0x7fffe2289000) at mail-namespace.c:130
	mail_set = (const struct mail_storage_settings *) 0x63bbe0
	namespaces = (struct mail_namespace *) 0x0
	ns = <value optimized out>
	ns_p = (struct mail_namespace **) 0x7fffe2288ee8
	inbox_set = <value optimized out>
	error = <value optimized out>
	driver = <value optimized out>
	location_source = <value optimized out>
	i = 0
	count = 3
	__PRETTY_FUNCTION__ = "mail_namespaces_init"
#6  0x00007f9d760c4bae in mail_storage_service_init_post
(service=0x627370, input=0x7fffe2288fc0, home=0x7fffe228aef4
"/data/mail/Domains/my.domain.com/Accounts/testuser",
    user_set=0x629428, setuid_root=false, flags=17,
mail_user_r=0x7fffe2289020, error_r=0x7fffe2289000) at
mail-storage-service.c:395
	mail_set = (const struct mail_storage_settings *) 0x6294b8
	mail_user = (struct mail_user *) 0x63b2f8
#7  0x00007f9d760c5a20 in mail_storage_service_init_user
(service=0x627370, _input=<value optimized out>, set_roots=<value
optimized out>, flags=17) at mail-storage-service.c:596
	_data_stack_cur_id = 2
	user = <value optimized out>
#8  0x0000000000417d07 in main (argc=1, argv=0x7fffe22891e8,
envp=0x7fffe22891f8) at main.c:217
---Type <return> to continue, or q <return> to quit---
	set_roots = {0x61e980, 0x0}
	service_flags = <value optimized out>
	storage_service_flags = 17
	input = {module = 0x41b2b7 "imap", service = 0x41b2b7 "imap",
username = 0x7fffe228aecd "testuser at my.domain.com", local_ip = {family
= 2, u = {ip6 = {in6_u = {
          u6_addr8 = "¬\036\vj", '\0' <repeats 11 times>, u6_addr16 =
{7852, 27147, 0, 0, 0, 0, 0, 0}, u6_addr32 = {1779113644, 0, 0, 0}}},
ip4 = {s_addr = 1779113644}}}, remote_ip = {family = 2, u = {ip6 = {
        in6_u = {u6_addr8 = "¬\036\v\006", '\0' <repeats 11 times>,
u6_addr16 = {7852, 1547, 0, 0, 0, 0, 0, 0}, u6_addr32 = {101392044, 0,
0, 0}}}, ip4 = {s_addr = 101392044}}}}
	mail_user = <value optimized out>
	set = <value optimized out>
	dump_capability = false
	value = <value optimized out>
	c = <value optimized out>
(gdb)