[Dovecot] Dovecot 2.2.13 core dumped with shared folder/acl
Alessio Cecchi
alessio at skye.it
Tue May 13 22:31:30 UTC 2014
Hi,
after the upgrade to dovecot 2.2.13 (on Deb 6) for users that have
enabled shared folder I found "core dumped" error in the log:
imap(webmaster at pippo.com): Fatal: master: service(imap): child 26828
killed with signal 11 (core dumped)
[...]
imap[26828]: segfault at 160 ip 00007f76a18bca32 sp 00007fff5ecc13b0
error 4 in lib01_acl_plugin.so[7f76a18af000+13000]
These error happens "random", when users configure subscription for
shared folders or browse shared folders.
Here "bt full":
#0 0x00007f76a18bca32 in acl_mailbox_get_aclobj (box=<value optimized
out>) at acl-mailbox.c:29
No locals.
#1 0x00007f76a16ad1e3 in cmd_myrights (cmd=0x1211cd0) at
imap-acl-plugin.c:331
ns = <value optimized out>
box = 0x12051f0
mailbox = 0x11732a8 "shared"
orig_mailbox = 0x1214690 "shared"
rights = <value optimized out>
str = <value optimized out>
#2 0x000000000041813d in command_exec (cmd=0x1211cd0) at
imap-commands.c:158
hook = 0x117c0e0
ret = <value optimized out>
#3 0x0000000000417240 in client_command_input (cmd=0x1211cd0) at
imap-client.c:778
client = 0x12110d0
command = <value optimized out>
__FUNCTION__ = "client_command_input"
#4 0x000000000041732d in client_command_input (cmd=0x1211cd0) at
imap-client.c:839
client = 0x12110d0
command = 0x0
__FUNCTION__ = "client_command_input"
#5 0x00000000004175ad in client_handle_next_command (client=0x12110d0)
at imap-client.c:877
No locals.
#6 client_handle_input (client=0x12110d0) at imap-client.c:889
_data_stack_cur_id = 3
ret = 96
remove_io = <value optimized out>
handled_commands = false
__FUNCTION__ = "client_handle_input"
#7 0x000000000041792f in client_input (client=0x12110d0) at
imap-client.c:931
cmd = <value optimized out>
output = 0x1211b10
bytes = <value optimized out>
__FUNCTION__ = "client_input"
#8 0x00007f76a24c98ce in io_loop_call_io (io=0x1211be0) at
ioloop.c:441
ioloop = 0x117b730
t_id = 2
__FUNCTION__ = "io_loop_call_io"
#9 0x00007f76a24caa4f in io_loop_handler_run_internal (ioloop=<value
optimized out>) at ioloop-epoll.c:220
ctx = 0x117c3c0
event = 0x117d230
list = 0x1197a60
io = 0x10
---Type <return> to continue, or q <return> to quit---
tv = {tv_sec = 59, tv_usec = 999046}
msecs = <value optimized out>
ret = 1
i = 0
call = false
__FUNCTION__ = "io_loop_handler_run_internal"
#10 0x00007f76a24c9959 in io_loop_handler_run (ioloop=0x10) at
ioloop.c:488
No locals.
#11 0x00007f76a24c99e8 in io_loop_run (ioloop=0x117b730) at
ioloop.c:465
__FUNCTION__ = "io_loop_run"
#12 0x00007f76a2476ef3 in master_service_run (service=0x117b5c0,
callback=0x28) at master-service.c:566
No locals.
#13 0x0000000000420eb7 in main (argc=1, argv=0x117b390) at main.c:400
set_roots = {0x428e20, 0x0}
login_set = {auth_socket_path = 0x1173050 "\210\060\027\001",
postlogin_socket_path = 0x0, postlogin_timeout_secs = 60,
callback = 0x4210b0 <login_client_connected>,
failure_callback = 0x421050 <login_client_failed>, request_auth_token =
1}
service_flags = <value optimized out>
storage_service_flags = MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT
username = 0x0
c = <value optimized out>
Here is my configuration:
# 2.2.13: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.9
auth_cache_negative_ttl = 10 mins
auth_cache_size = 8 M
auth_cache_ttl = 20 mins
deliver_log_format = msgid=%m, from=%f, subject="%s": %$
dict {
acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
expire = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
}
disable_plaintext_auth = no
dotlock_use_excl = no
first_valid_gid = 89
first_valid_uid = 89
imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
tb-lsub-flags
imap_idle_notify_interval = 29 mins
imap_logout_format = in=%i out=%o session=<%{session}>
last_valid_gid = 89
last_valid_uid = 89
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = *
mail_fsync = always
mail_location = maildir:~/Maildir
mail_nfs_index = yes
mail_nfs_storage = yes
mail_plugins = quota acl expire
maildir_very_dirty_syncs = yes
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character subaddress comparator-i;ascii-numeric relational regex
imap4flags copy include variables body enotify environment mailbox date
ihave duplicate vnd.dovecot.duplicate
mmap_disable = yes
namespace {
list = children
location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
prefix = shared/%%n/
separator = /
subscriptions = no
type = shared
}
namespace inbox {
inbox = yes
location =
mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Spam {
auto = subscribe
special_use = \Junk
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
prefix =
separator = /
}
passdb {
args = username_format=%Ld
/etc/dovecot/extra/alias-domains-denylogin.txt
deny = yes
driver = passwd-file
}
passdb {
args = cache_key=%s%u webmail=192.168.3.15
driver = vpopmail
}
plugin {
acl = vfile
acl_shared_dict = proxy::acl
expire = Trash
expire2 = Spam
expire_dict = proxy::expire
quota = maildir:UserQuota
quota2 = dict:Quota Usage::noenforcing:proxy::sqlquota
quota_grace = 10M
quota_rule2 = Trash:storage=+100M
quota_warning = storage=95%% quota-warning 95 %u
quota_warning2 = storage=80%% quota-warning 80 %u
sieve = ~/.dovecot.sieve
sieve_before = /etc/dovecot/sieve/before.sieve
sieve_dir = ~/sieve
sieve_extensions = +vnd.dovecot.duplicate -vacation
}
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s,
bytes=%i/%o, session=<%{session}>
protocols = imap pop3 sieve
service auth {
client_limit = 5500
unix_listener auth-userdb {
group = vchkpw
mode = 0660
user = vpopmail
}
}
service dict {
process_limit = 500
unix_listener dict {
group = vchkpw
mode = 0660
user = vpopmail
}
}
service imap-login {
process_min_avail = 4
service_count = 0
}
service imap {
process_limit = 4000
service_count = 100
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
}
service pop3-login {
service_count = 0
}
service pop3 {
process_limit = 1023
service_count = 100
}
service quota-warning {
executable = script /etc/dovecot/scripts/quota-warning.sh
unix_listener quota-warning {
user = vpopmail
}
user = vpopmail
}
ssl_cert = </etc/dovecot/ssl/wildcard.pem
ssl_key = </etc/dovecot/ssl/wildcard.key
submission_host = localhost
userdb {
args = quota_template=quota_rule=*:backend=%q
driver = vpopmail
}
protocol lda {
mail_location = maildir:~/Maildir:INDEX=MEMORY
mail_plugins = quota acl expire sieve
}
protocol imap {
mail_max_userip_connections = 15
mail_plugins = quota acl expire imap_quota imap_acl
}
protocol sieve {
mail_max_userip_connections = 2
}
protocol pop3 {
mail_max_userip_connections = 5
}
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