index corruption weirdness

William Taylor william.taylor at sonic.com
Tue Oct 9 22:16:00 EEST 2018


We have started seeing index corruption ever since we upgraded (we 
believe) our imap servers from SL6 to Centos 7. Mail/Indexes are stored 
on Netapps mounted via NFS. We have 2 lvs servers running surealived in 
dr/wlc, 2 directors and 6 backend imap/pop servers.

Most of the core dumps I've looked at for different users are like 
"Backtrace 2" with some variations on folder path.

This latest crash (Backtrace 1) is different from others I've seen.
It is also leaving 0byte files in the users .Drafts/tmp folder.

# ls -s /var/spool/mail/15/00/user1/.Drafts/tmp | awk '{print $1}'  
  |sort | uniq -c
   9692 0
      1 218600

I believe the number of cores here is different from the number of tmp 
files because this is when we moved the user to our debug server so we
could get the core dumps.
# ls -la /home/u/user1/core.* |wc -l                                   
  8437

Any help/insight would be greatly appreciated.

Thanks,
  William


OS Info:
CentOS Linux release 7.5.1804 (Core)
3.10.0-862.14.4.el7.x86_64

NFS:
# mount -t nfs |grep mail/15
172.16.255.14:/vol/vol1/mail/15 on /var/spool/mail/15 type nfs 
(rw,nosuid,nodev,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nordirplus,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.255.14,mountvers=3,mountport=4046,mountproto=udp,local_lock=none,addr=172.16.255.14)

Dovecot Info:
dovecot -n
# 2.1.17: /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-862.14.4.el7.x86_64 x86_64 CentOS Linux release 
  7.5.1804 (Core)  auth_failure_delay = 0
auth_master_user_separator = *
auth_username_format = %Ln
auth_verbose = yes
auth_verbose_passwords = sha1
auth_worker_max_count = 64
login_log_format_elements = user=<%u> session=%{session} method=%m 
rip=%r lip=%l mpid=%e %c
login_trusted_networks = 172.16.0/24
mail_debug = yes
mail_fsync = always
mail_log_prefix = "%s(%u): session=%{session} "
mail_plugins = zlib
maildir_very_dirty_syncs = yes
mmap_disable = yes
passdb {
  args = /etc/dovecot/master-users
  driver = passwd-file
  master = yes
}
passdb {
  args = imap
  driver = pam
}
plugin {
  lazy_expunge = DELETED_MESSAGES.
  mail_log_events = delete expunge flag_change
  mail_log_fields = uid box msgid from flags size
  quota = fs:User quota
  stats_refresh = 30 secs
  stats_track_cmds = yes
}
protocols = imap pop3
service anvil {
  client_limit = 10000
}
service auth {
  client_limit = 10000
  vsz_limit = 1 G
}
service doveadm {
  inet_listener {
    port = 1842
  }
  unix_listener doveadm-server {
    mode = 0666
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
  process_limit = 7000
  process_min_avail = 32
  vsz_limit = 256 M
}
service imap-postlogin {
  executable = script-login -d /etc/dovecot/bin/foo-imap-postlogin
  user = $default_internal_user
}
service imap {
  executable = imap imap-postlogin
  process_limit = 7000
  vsz_limit = 1492 M
}
service pop3-login {
  inet_listener pop3 {
    port = 110
  }
  inet_listener pop3s {
    port = 995
    ssl = yes
  }
  process_limit = 2000
  process_min_avail = 32
  vsz_limit = 256 M
}
service pop3-postlogin {
  executable = script-login -d /etc/dovecot/bin/foo-pop3-postlogin
  user = $default_internal_user
}
service pop3 {
  executable = pop3 pop3-postlogin
  process_limit = 2000
}
shutdown_clients = no
ssl = required
ssl_ca = </etc/dovecot/ssl/imap.foo.com.ca-bundle
ssl_cert = </etc/dovecot/ssl/imap.foo.com.crt
ssl_key = </etc/dovecot/ssl/imap.foo.com.key
ssl_parameters_regenerate = 1 days
ssl_protocols = !SSLv2 !SSLv3
syslog_facility = local0
userdb {
  driver = passwd
}
verbose_proctitle = yes
protocol imap {
  imap_id_send = support-url support-email
  imap_max_line_length = 128 k
  mail_max_userip_connections = 20
  mail_plugins = zlib mail_log notify imap_zlib
  ssl_ca = </etc/dovecot/ssl/imap.foo.com.ca-bundle
  ssl_cert = </etc/dovecot/ssl/imap.foo.com.crt
  ssl_key = </etc/dovecot/ssl/imap.foo.com.key
}
protocol pop3 {
  mail_plugins = zlib lazy_expunge
  pop3_fast_size_lookups = yes
  pop3_uidl_format = %f
  ssl_ca = </etc/dovecot/ssl/pop.foo.com.ca-bundle
  ssl_cert = </etc/dovecot/ssl/pop.foo.com.crt
  ssl_key = </etc/dovecot/ssl/pop.foo.com.key
}

Backtrace 1:
Reading symbols from /usr/libexec/dovecot/imap...Reading symbols from 
/usr/lib/debug/usr/libexec/dovecot/imap.debug...done.
Program terminated with signal 6, Aborted.
#0  0x00007fbee47e0277 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);

Thread 1 (Thread 0x7fbee532f840 (LWP 9449)):
#0  0x00007fbee47e0277 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
	resultvar = 0
	pid = 9449
	selftid = 9449
#1  0x00007fbee47e1968 in __GI_abort () at abort.c:90
	save_stage = 2
	act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 
0x0}, sa_mask = {__val = {0 <repeats 11 times>, 31683224, 
140725444114256, 31908720, 140457858143945, 31683224}}, sa_flags = 
-457466710, sa_restorer = 0x0}
	sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fbee4bbdb65 in default_fatal_finish (type=<optimized out>, 
status=status at entry=0) at failures.c:191
	backtrace = 0x1e372d0 
"/usr/lib64/dovecot/libdovecot.so.0(+0x46b55) [0x7fbee4bbdb55] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0x46c1e) [0x7fbee4bbdc1e] -> 
/usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7fbee4b90dda] -> 
/usr"...
#3  0x00007fbee4bbdc1e in i_internal_fatal_handler (ctx=0x7ffd321b77a0, 
format=<optimized out>, args=<optimized out>) at failures.c:649
	status = 0
#4  0x00007fbee4b90dda in i_panic (format=format at entry=0x7fbee4ee0588 
"file %s: line %d (%s): assertion failed: (%s)") at failures.c:263
	ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0}
	args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 
0x7ffd321b7890, reg_save_area = 0x7ffd321b77d0}}
#5  0x00007fbee4ea96ad in index_mail_parse_body_finish (mail=0x1e69570, 
field=field at entry=MAIL_CACHE_FLAGS) at index-mail.c:769
	parser_input = 0x1e6e370
	ret = 1
	__FUNCTION__ = "index_mail_parse_body_finish"
#6  0x00007fbee4eaaa2b in index_mail_cache_parse_deinit 
(_mail=<optimized out>, received_date=<optimized out>, 
success=<optimized out>)
    at index-mail.c:1624
	mail = <optimized out>
#7  0x00007fbee4e5dce3 in maildir_save_finish_real (_ctx=0x1e68560) at 
maildir-save.c:551
	ctx = 0x1e68560
	e = 0x1e574d0
	output_errno = <optimized out>
	path = 0x1e37218 
"/var/spool/mail/15/00/user1/.Drafts/tmp/1539107164.M157986P9449.debug.imapd.foo.com"
	real_size = <optimized out>
	size = 1539107194
#8  maildir_save_finish (ctx=0x1e68560) at maildir-save.c:630
	_data_stack_cur_id = 3
#9  0x00007fbee4e90ce6 in mailbox_save_cancel 
(_ctx=_ctx at entry=0x1e58d58) at mail-storage.c:1697
	ctx = 0x1e68560
	keywords = 0x1e65860
	mail = <optimized out>
#10 0x0000000000409459 in cmd_append_continue_message (cmd=0x1e58c10) at 
cmd-append.c:420
	client = 0x1e58070
	ctx = 0x1e58d10
	size = 31819840
	ret = 3920
#11 0x000000000041186c in command_exec (cmd=0x1e58c10) at 
imap-commands.c:148
	hook = 0x1e40d00
	ret = <optimized out>
#12 0x0000000000408d21 in client_input_append (cmd=0x1e58c10) at 
cmd-append.c:101
	ctx = 0x1e58d10
	client = 0x1e58070
	finished = <optimized out>
	__FUNCTION__ = "client_input_append"
#13 0x00007fbee4bcaaa7 in io_loop_call_io (io=0x1e58b10) at ioloop.c:379
	ioloop = 0x1e3f6a0
	t_id = 2
#14 0x00007fbee4bcb857 in io_loop_handler_run 
(ioloop=ioloop at entry=0x1e3f6a0) at ioloop-epoll.c:213
	ctx = 0x1e3fa10
	events = <optimized out>
	list = 0x1e58b60
	io = <optimized out>
	tv = {tv_sec = 1799, tv_usec = 999445}
	events_count = <optimized out>
	msecs = <optimized out>
	ret = 1
	i = 0
	call = <optimized out>
#15 0x00007fbee4bca628 in io_loop_run (ioloop=0x1e3f6a0) at ioloop.c:398
No locals.
#16 0x00007fbee4bb6213 in master_service_run (service=0x1e3f550, 
callback=callback at entry=0x418fb0 <client_connected>) at 
master-service.c:544
No locals.
#17 0x0000000000408933 in main (argc=2, argv=0x1e3f390) at main.c:389
	set_roots = {0x41c320 <imap_setting_parser_info>, 0x0}
	login_set = {auth_socket_path = 0x1e37090 
"/run/dovecot/auth-master", postlogin_socket_path = 0x1e370c0 
"/run/dovecot/imap-postlogin", postlogin_timeout_secs = 60, callback = 
0x419440 <login_client_connected>, failure_callback = 0x419150 
<login_client_failed>}
	service_flags = <optimized out>
	storage_service_flags = <optimized out>
	username = 0x0
	c = <optimized out>


Backtrace 2:
Reading symbols from /usr/libexec/dovecot/imap...Reading symbols from 
/usr/lib/debug/usr/libexec/dovecot/imap.debug...done.
Program terminated with signal 6, Aborted.
#0  0x00007f437288c277 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);

Thread 1 (Thread 0x7f43733d3840 (LWP 6725)):
#0  0x00007f437288c277 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
	resultvar = 0
	pid = 6725
	selftid = 6725
#1  0x00007f437288d968 in __GI_abort () at abort.c:90
	save_stage = 2
	act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 
0x0}, sa_mask = {__val = {0 <repeats 11 times>, 19630744, 
140729812750864, 1, 139927665268057, 19630744}}, sa_flags = 1925602218, 
sa_restorer = 0x0}
	sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f4372c69a25 in default_fatal_finish (type=<optimized out>, 
status=status at entry=0) at failures.c:191
	backtrace = 0x12b8ad0 
"/usr/lib64/dovecot/libdovecot.so.0(+0x46a15) [0x7f4372c69a15] -> 
/usr/lib64/dovecot/libdovecot.so.0(+0x46ade) [0x7f4372c69ade] -> 
/usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f4372c3cdaa] -> 
/usr"...
#3  0x00007f4372c69ade in i_internal_fatal_handler (ctx=0x7ffe367f9260, 
format=<optimized out>, args=<optimized out>) at failures.c:649
	status = 0
#4  0x00007f4372c3cdaa in i_panic (format=format at entry=0x7f4372f83cc8 
"file %s: line %d (%s): assertion failed: (%s)") at failures.c:263
	ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0}
	args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 
0x7ffe367f9350, reg_save_area = 0x7ffe367f9290}}
#5  0x00007f4372f77eb8 in keywords_update_records (ext=0x13827e8, 
ext=0x13827e8, uid2=<optimized out>, uid1=<optimized out>, 
type=MODIFY_ADD, keyword_idx=0, ctx=0x7ffe367f94e0) at 
mail-index-sync-keywords.c:228
	data = <optimized out>
	data_mask = 1 '\001'
	seq1 = 346
	view = 0x134c110
	rec = <optimized out>
	data_offset = <optimized out>
	seq2 = 346
#6  mail_index_sync_keywords (ctx=ctx at entry=0x7ffe367f94e0, 
hdr=hdr at entry=0x1345bb8, rec=rec at entry=0x13a54e4) at 
mail-index-sync-keywords.c:304
	view = <optimized out>
	keyword_name = <optimized out>
	ext = 0x13827e8
	uid = <optimized out>
	end = 0x13a54fc
	seqset_offset = <optimized out>
	ext_map_idx = 2
	keyword_idx = 0
	__FUNCTION__ = "mail_index_sync_keywords"
#7  0x00007f4372f78822 in mail_index_sync_record_real (data=0x13a54e4, 
hdr=0x1345bb8, ctx=0x7ffe367f94e0) at mail-index-sync-update.c:779
	rec = 0x13a54e4
	ret = 0
#8  mail_index_sync_record (ctx=ctx at entry=0x7ffe367f94e0, hdr=0x1345bb8, 
data=0x13a54e4) at mail-index-sync-update.c:824
	_data_stack_cur_id = 7
	ret = 0
#9  0x00007f4372f79866 in mail_index_sync_map 
(_map=_map at entry=0x1346498, 
type=type at entry=MAIL_INDEX_SYNC_HANDLER_HEAD, force=force at entry=true)
    at mail-index-sync-update.c:1036
	map = <optimized out>
	index = 0x1346410
	view = 0x134c110
	sync_map_ctx = {view = 0x134c110, modseq_ctx = 0x138d330, 
cur_ext_map_idx = 0, ext_intro_seq = 105, ext_intro_offset = 13792, 
ext_intro_end_offset = 13820, expunge_handlers = {arr = {buffer = 0x0, 
element_size = 0}, v = 0x0, v_modifiable = 0x0}, extra_contexts = {
	    arr = {buffer = 0x134d8c0, element_size = 8}, v = 0x134d8c0, 
v_modifiable = 0x134d8c0}, unknown_extensions = 0x0, type = 
MAIL_INDEX_SYNC_HANDLER_HEAD, sync_handlers_initialized = 0, 
expunge_handlers_set = 0, expunge_handlers_used = 0, cur_ext_ignore = 0, 
internal_update = 0, errors = 0}
	thdr = 0x1345bb8
	tdata = 0x13a54e4
	prev_seq = 105
	start_offset = <optimized out>
	prev_offset = 14084
	ret = <optimized out>
	had_dirty = <optimized out>
	reset = false
	__FUNCTION__ = "mail_index_sync_map"
#10 0x00007f4372f6a6e4 in mail_index_map (index=index at entry=0x1346410, 
type=type at entry=MAIL_INDEX_SYNC_HANDLER_HEAD) at 
mail-index-map-read.c:433
	ret = <optimized out>
	__FUNCTION__ = "mail_index_map"
#11 0x00007f4372f65a90 in mail_index_try_open 
(index=index at entry=0x1346410) at mail-index.c:426
	ret = <optimized out>
	__FUNCTION__ = "mail_index_try_open"
#12 0x00007f4372f66130 in mail_index_open_files 
(index=index at entry=0x1346410, 
flags=flags at entry=(MAIL_INDEX_OPEN_FLAG_CREATE | 
MAIL_INDEX_OPEN_FLAG_MMAP_DISABLE | 
MAIL_INDEX_OPEN_FLAG_DOTLOCK_USE_EXCL)) at mail-index.c:504
	ret = <optimized out>
	created = false
#13 0x00007f4372f66230 in mail_index_open (index=0x1346410, 
flags=flags at entry=(MAIL_INDEX_OPEN_FLAG_CREATE | 
MAIL_INDEX_OPEN_FLAG_MMAP_DISABLE | 
MAIL_INDEX_OPEN_FLAG_DOTLOCK_USE_EXCL)) at mail-index.c:594
	ret = <optimized out>
	__FUNCTION__ = "mail_index_open"
#14 0x00007f4372f57a17 in index_storage_mailbox_open 
(box=box at entry=0x1388750, move_to_memory=move_to_memory at entry=false) at 
index-storage.c:231
	ibox = 0x1388b48
	index_flags = (MAIL_INDEX_OPEN_FLAG_CREATE | 
MAIL_INDEX_OPEN_FLAG_MMAP_DISABLE | 
MAIL_INDEX_OPEN_FLAG_DOTLOCK_USE_EXCL)
	ret = <optimized out>
	__FUNCTION__ = "index_storage_mailbox_open"
#15 0x00007f4372f03212 in maildir_mailbox_open_existing 
(box=box at entry=0x1388750) at maildir-storage.c:305
	mbox = 0x1388750
#16 0x00007f4372f03960 in maildir_mailbox_open (box=0x1388750) at 
maildir-storage.c:365
	box_path = 0x1388f68 
"/var/spool/mail/16/47/user2/DELETED_MESSAGES/.INBOX"
	root_dir = <optimized out>
	st = {st_dev = 140729812752383, st_ino = 140729812752416, 
st_nlink = 19629048, st_mode = 914331680, st_uid = 32766, st_gid = 
4300439, __pad0 = 0, st_rdev = 140729812752896, st_size = 1, st_blksize 
= 133, st_blocks = 19629048, st_atim = {tv_sec = 139927662018357, 
	    tv_nsec = 4222451713}, st_mtim = {tv_sec = 139927664838496, 
tv_nsec = 139927664838496}, st_ctim = {tv_sec = 344592, tv_nsec = 
-140729812752575}, __unused = {129, 32, 4}}
	ret = <optimized out>
#17 0x00007f436fd13942 in zlib_mailbox_open (box=0x1388750) at 
zlib-plugin.c:346
	zbox = 0x1388e30
#18 0x00007f4372f34cc7 in mailbox_open_full (box=0x1388750, input=0x0) 
at mail-storage.c:907
	_data_stack_cur_id = 6
	ret = <optimized out>
	input = 0x0
	box = 0x1388750
#19 0x00007f4372f35070 in mailbox_open (box=box at entry=0x1388750) at 
mail-storage.c:942
No locals.
#20 0x00007f4372f56b2b in index_storage_get_status (box=0x1388750, 
items=STATUS_UNSEEN, status_r=0x7ffe367f9b40) at index-status.c:41
	hdr = <optimized out>
	__FUNCTION__ = "index_storage_get_status"
#21 0x00000000004175f5 in imap_status_get (cmd=0x12d99b0, ns=0x12d8590, 
mailbox=mailbox at entry=0x13883e0 "DELETED_MESSAGES.INBOX", 
items=items at entry=0x12d9aec, result_r=result_r at entry=0x7ffe367f9b40, 
error_r=error_r at entry=0x7ffe367f9b38) at imap-status.c:84
	client = 0x12d8e60
	box = 0x1388750
	error = MAIL_ERROR_NONE
	ret = 0
#22 0x000000000040bee7 in list_send_status (flags=<optimized out>, 
mutf7_name=0x12b8548 "DELETED_MESSAGES.INBOX", name=0x13883e0 
"DELETED_MESSAGES.INBOX", ctx=0x12d9ad0) at cmd-list.c:466
	result = {status = {messages = 0, recent = 0, unseen = 0, 
uidvalidity = 0, uidnext = 0, first_unseen_seq = 0, first_recent_uid = 
0, last_cached_seq = 0, highest_modseq = 0, keywords = 0x0, 
permanent_flags = 0, nonpermanent_modseqs = 0, permanent_keywords = 0, 
allow_new_keywords = 0}, metadata = {guid = '\000' <repeats 15 times>, 
virtual_size = 0, cache_fields = 0x0, precache_fields = (MAIL_FETCH_DATE 
| MAIL_FETCH_RECEIVED_DATE | MAIL_FETCH_SAVE_DATE | 
MAIL_FETCH_VIRTUAL_SIZE | MAIL_FETCH_NUL_STATE | MAIL_FETCH_IMAP_BODY | 
MAIL_FETCH_FROM_ENVELOPE | MAIL_FETCH_HEADER_MD5 | 
MAIL_FETCH_UIDL_BACKEND | MAIL_FETCH_MAILBOX_NAME | MAIL_FETCH_GUID | 
unknown: 16779264)}}
	ns = <optimized out>
	error = 0x12b8360 "*"
#23 list_namespace_mailboxes (ctx=0x12d9ad0) at cmd-list.c:566
	_data_stack_cur_id = 5
	info = <optimized out>
	flags = <optimized out>
	str = 0x12b83c0
	ret = 1
	ns = 0x0
	mutf7_name = 0x12b8510
	name = 0x13883e0 "DELETED_MESSAGES.INBOX"
#24 cmd_list_continue (cmd=cmd at entry=0x12d99b0) at cmd-list.c:912
	_data_stack_cur_id = 4
	ctx = 0x12d9ad0
#25 0x000000000040cb27 in cmd_list_full (cmd=0x12d99b0, lsub=<optimized 
out>) at cmd-list.c:1092
	client = 0x12d8e60
	args = 0x12c3968
	list_args = 0x12c3a40
	arg_count = 0
	ctx = 0x12d9ad0
	patterns = {arr = {buffer = <optimized out>, element_size = 8}, 
v = <optimized out>, v_modifiable = <optimized out>}
	pattern = 0x12b8360 "*"
	patterns_strarr = <optimized out>
	str = <optimized out>
#26 0x00000000004117fc in command_exec (cmd=cmd at entry=0x12d99b0) at 
imap-commands.c:148
	hook = 0x12c1d00
	ret = <optimized out>
#27 0x000000000041079b in client_command_input (cmd=cmd at entry=0x12d99b0) 
at imap-client.c:682
	client = 0x12d8e60
	command = <optimized out>
	__FUNCTION__ = "client_command_input"
#28 0x0000000000410885 in client_command_input (cmd=0x12d99b0) at 
imap-client.c:733
	client = 0x12d8e60
	command = <optimized out>
	__FUNCTION__ = "client_command_input"
#29 0x0000000000410aed in client_handle_next_command 
(remove_io_r=<synthetic pointer>, client=0x12d8e60) at imap-client.c:774
	size = 52
#30 client_handle_input (client=client at entry=0x12d8e60) at 
imap-client.c:786
	_data_stack_cur_id = 3
	remove_io = false
	handled_commands = false
	__FUNCTION__ = "client_handle_input"
#31 0x0000000000411302 in client_input (client=0x12d8e60) at 
imap-client.c:825
	cmd = 0x7f4372c69eae <i_set_failure_prefix+46>
	output = 0x12dde18
	bytes = 52
	__FUNCTION__ = "client_input"
#32 0x00007f4372c76937 in io_loop_call_io (io=0x12d1150) at ioloop.c:379
	ioloop = 0x12c06a0
	t_id = 2
#33 0x00007f4372c776e7 in io_loop_handler_run 
(ioloop=ioloop at entry=0x12c06a0) at ioloop-epoll.c:213
	ctx = 0x12c0a10
	events = <optimized out>
	list = 0x12d9900
	io = <optimized out>
	tv = {tv_sec = 1799, tv_usec = 999765}
	events_count = <optimized out>
	msecs = <optimized out>
	ret = 1
	i = 0
	call = <optimized out>
#34 0x00007f4372c764b8 in io_loop_run (ioloop=0x12c06a0) at ioloop.c:398
No locals.
#35 0x00007f4372c62113 in master_service_run (service=0x12c0550, 
callback=callback at entry=0x418f40 <client_connected>) at 
master-service.c:544
No locals.
#36 0x00000000004088e3 in main (argc=2, argv=0x12c0390) at main.c:389
	set_roots = {0x41c2a0 <imap_setting_parser_info>, 0x0}
	login_set = {auth_socket_path = 0x12b8090 
"/run/dovecot/auth-master", postlogin_socket_path = 0x12b80c0 
"/run/dovecot/imap-postlogin", postlogin_timeout_secs = 60, callback = 
0x4193d0 <login_client_connected>, failure_callback = 0x4190e0 
<login_client_failed>}
	service_flags = <optimized out>
	storage_service_flags = <optimized out>
	username = 0x0
	c = <optimized out>



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