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@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
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 =