Dear all,
I experience SegFaults in the imap binary on a LIST "" ""
command,
as sent by Claws mail. Using LIST "" "INBOX" or similar is
fine.
Here is an example telnet session
$ telnet 127.0.0.1 143
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE
AUTH=PLAIN] Dovecot ready.
01 LOGIN **** ****
01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE
SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT
MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS
LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN
CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA] Logged in
02 LIST "" ""
Connection closed by foreign host.
In the log file
dovecot[8375]: imap(***): Fatal: master: service(imap): child 15803 killed
with signal 11 (core dumps disabled)
Please find the config below.
Best regards,
Thorsten
$ doveconf -n
# 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.16 (1dc4c73)
# OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6
auth_debug = yes
auth_debug_passwords = yes
auth_socket_path = /var/run/dovecot/auth-userdb
auth_verbose = yes
base_dir = /var/run/dovecot/
default_internal_user = pop
first_valid_uid = 48
import_environment = TZ DEBUG=1
last_valid_uid = 48
login_trusted_networks = ****
mail_debug = yes
mail_gid = pop
mail_plugins = " mail_log notify zlib quota"
mail_uid = pop
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags
copy include variables body enotify environment mailbox date index ihave
duplicate mime foreverypart extracttext
namespace inbox {
inbox = yes
list = children
location mailbox Drafts {
auto = no
special_use = \Drafts
}
mailbox Sent {
auto = no
special_use = \Sent
}
mailbox Trash {
auto = no
autoexpunge = 30 days
special_use = \Trash
}
mailbox drafts {
auto = no
special_use = \Drafts
}
mailbox sent {
auto = no
special_use = \Sent
}
mailbox spamverdacht {
auto = no
autoexpunge = 30 days
special_use = \Junk
}
mailbox trash {
auto = no
autoexpunge = 30 days
special_use = \Trash
}
mailbox virenverdacht {
auto = no
autoexpunge = 30 days
special_use = \Junk
}
prefix = INBOX.
separator = .
subscriptions = yes
type = private
}
passdb {
args = nopassword=y
driver = static
}
plugin {
last_login_dict = file:~/lastlogin
mail_log_events = delete undelete expunge copy mailbox_delete
mailbox_rename
mail_log_fields = uid box msgid size
quota = maildir:User quota
quota_warning = storage=80%% 80 %u %{userdb:quota_bytes}
quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes}
quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes}
sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf
sieve_dir = ~/sieve
sieve_plugins = sieve_storage_ldap
zlib_save = gz
zlib_save_level = 6
}
service imap {
executable = imap postlogin
}
service pop3 {
executable = pop3 postlogin
}
service postlogin {
executable = script-login -d rawlog
}
service quota-warning {
executable = script /bin/quota-warning.sh
}
ssl = no
userdb {
args = /etc/dovecot/userdb-ldap.conf
driver = ldap
result_failure = return-fail
result_internalfail = return-fail
result_success = continue-ok
}
userdb {
default_fields = quota_bytes=42M
driver = bdb_quota
override_fields = quota_rule=*:bytes=%{userdb:quota_bytes}
result_failure = return-fail
result_internalfail = return-fail
result_success = continue-ok
}
verbose_proctitle = yes
protocol lda {
auth_socket_path = /var/run/dovecot/auth-userdb
mail_plugin_dir = /lib/dovecot/modules
mail_plugins = " mail_log notify zlib quota sieve"
}
protocol imap {
mail_plugins = " mail_log notify zlib quota imap_xauth last_login
imap_quota"
}
protocol pop3 {
mail_plugins = " mail_log notify zlib quota last_login"
}
The Problem arises due to a NULL deref in mail_namespaces.c line 601. Backtrace below x LIST "" "" Program received signal SIGSEGV, Segmentation fault. mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 601 while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX) == 0) (gdb) bt #0 mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 #1 0x000000000041164c in cmd_list_ref_root (ref=0x65b060 "", client=0x65a590) at cmd-list.c:324 #2 cmd_list_full (cmd=0x65aee0, lsub=<optimized out>) at cmd-list.c:461 #3 0x0000000000419825 in command_exec (cmd=cmd at entry=0x65aee0) at imap-commands.c:181 #4 0x0000000000417de2 in client_command_input (cmd=cmd at entry=0x65aee0) at imap-client.c:988 #5 0x0000000000417e70 in client_command_input (cmd=0x65aee0) at imap-client.c:1048 #6 0x00000000004181e5 in client_handle_next_command (remove_io_r=<synthetic pointer>, client=0x65a590) at imap-client.c:1090 #7 client_handle_input (client=0x65a590) at imap-client.c:1102 #8 0x0000000000418692 in client_input (client=0x65a590) at imap-client.c:1149 #9 0x00007ffff76297ac in io_loop_call_io (io=0x652aa0) at ioloop.c:589 #10 0x00007ffff762ab4a in io_loop_handler_run_internal (ioloop=ioloop at entry=0x63e7f0) at ioloop-epoll.c:222 #11 0x00007ffff7629835 in io_loop_handler_run (ioloop=ioloop at entry=0x63e7f0) at ioloop.c:637 #12 0x00007ffff76299d8 in io_loop_run (ioloop=0x63e7f0) at ioloop.c:613 #13 0x00007ffff75b9823 in master_service_run (service=0x63e690, callback=callback at entry=0x423d40 <client_connected>) at master-service.c:641 #14 0x000000000040c567 in main (argc=3, argv=0x63e390) at main.c:460 On Thu, Jan 19, 2017 at 1:05 PM, Thorsten Hater <thorsten.hater at gmail.com> wrote:> Dear all, > > I experience SegFaults in the imap binary on a LIST "" "" command, > as sent by Claws mail. Using LIST "" "INBOX" or similar is fine. > Here is an example telnet session > > $ telnet 127.0.0.1 143 > Trying 127.0.0.1... > Connected to 127.0.0.1. > Escape character is '^]'. > * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE > AUTH=PLAIN] Dovecot ready. > 01 LOGIN **** **** > 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE > IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT > MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS > LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN > CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA] Logged in > 02 LIST "" "" > Connection closed by foreign host. > > In the log file > > dovecot[8375]: imap(***): Fatal: master: service(imap): child 15803 killed > with signal 11 (core dumps disabled) > > Please find the config below. > > Best regards, > Thorsten > > $ doveconf -n > # 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.16 (1dc4c73) > # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 > auth_debug = yes > auth_debug_passwords = yes > auth_socket_path = /var/run/dovecot/auth-userdb > auth_verbose = yes > base_dir = /var/run/dovecot/ > default_internal_user = pop > first_valid_uid = 48 > import_environment = TZ DEBUG=1 > last_valid_uid = 48 > login_trusted_networks = **** > mail_debug = yes > mail_gid = pop > mail_plugins = " mail_log notify zlib quota" > mail_uid = pop > managesieve_notify_capability = mailto > managesieve_sieve_capability = fileinto reject envelope encoded-character > vacation subaddress comparator-i;ascii-numeric relational regex imap4flags > copy include variables body enotify environment mailbox date index ihave > duplicate mime foreverypart extracttext > namespace inbox { > inbox = yes > list = children > location > mailbox Drafts { > auto = no > special_use = \Drafts > } > mailbox Sent { > auto = no > special_use = \Sent > } > mailbox Trash { > auto = no > autoexpunge = 30 days > special_use = \Trash > } > mailbox drafts { > auto = no > special_use = \Drafts > } > mailbox sent { > auto = no > special_use = \Sent > } > mailbox spamverdacht { > auto = no > autoexpunge = 30 days > special_use = \Junk > } > mailbox trash { > auto = no > autoexpunge = 30 days > special_use = \Trash > } > mailbox virenverdacht { > auto = no > autoexpunge = 30 days > special_use = \Junk > } > prefix = INBOX. > separator = . > subscriptions = yes > type = private > } > passdb { > args = nopassword=y > driver = static > } > plugin { > last_login_dict = file:~/lastlogin > mail_log_events = delete undelete expunge copy mailbox_delete > mailbox_rename > mail_log_fields = uid box msgid size > quota = maildir:User quota > quota_warning = storage=80%% 80 %u %{userdb:quota_bytes} > quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes} > quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes} > sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf > sieve_dir = ~/sieve > sieve_plugins = sieve_storage_ldap > zlib_save = gz > zlib_save_level = 6 > } > service imap { > executable = imap postlogin > } > service pop3 { > executable = pop3 postlogin > } > service postlogin { > executable = script-login -d rawlog > } > service quota-warning { > executable = script /bin/quota-warning.sh > } > ssl = no > userdb { > args = /etc/dovecot/userdb-ldap.conf > driver = ldap > result_failure = return-fail > result_internalfail = return-fail > result_success = continue-ok > } > userdb { > default_fields = quota_bytes=42M > driver = bdb_quota > override_fields = quota_rule=*:bytes=%{userdb:quota_bytes} > result_failure = return-fail > result_internalfail = return-fail > result_success = continue-ok > } > verbose_proctitle = yes > protocol lda { > auth_socket_path = /var/run/dovecot/auth-userdb > mail_plugin_dir = /lib/dovecot/modules > mail_plugins = " mail_log notify zlib quota sieve" > } > protocol imap { > mail_plugins = " mail_log notify zlib quota imap_xauth last_login > imap_quota" > } > protocol pop3 { > mail_plugins = " mail_log notify zlib quota last_login" > } >
On 19.01.2017 15:56, Thorsten Hater wrote:> The Problem arises due to a NULL deref in mail_namespaces.c line 601. > Backtrace below > > x LIST "" "" > > Program received signal SIGSEGV, Segmentation fault. > mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 > 601 while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX) == 0) > (gdb) bt > #0 mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 > #1 0x000000000041164c in cmd_list_ref_root (ref=0x65b060 "", > client=0x65a590) at cmd-list.c:324 > #2 cmd_list_full (cmd=0x65aee0, lsub=<optimized out>) at cmd-list.c:461 > #3 0x0000000000419825 in command_exec (cmd=cmd at entry=0x65aee0) at > imap-commands.c:181 > #4 0x0000000000417de2 in client_command_input (cmd=cmd at entry=0x65aee0) at > imap-client.c:988 > #5 0x0000000000417e70 in client_command_input (cmd=0x65aee0) at > imap-client.c:1048 > #6 0x00000000004181e5 in client_handle_next_command > (remove_io_r=<synthetic pointer>, client=0x65a590) at imap-client.c:1090 > #7 client_handle_input (client=0x65a590) at imap-client.c:1102 > #8 0x0000000000418692 in client_input (client=0x65a590) at > imap-client.c:1149 > #9 0x00007ffff76297ac in io_loop_call_io (io=0x652aa0) at ioloop.c:589 > #10 0x00007ffff762ab4a in io_loop_handler_run_internal > (ioloop=ioloop at entry=0x63e7f0) > at ioloop-epoll.c:222 > #11 0x00007ffff7629835 in io_loop_handler_run (ioloop=ioloop at entry=0x63e7f0) > at ioloop.c:637 > #12 0x00007ffff76299d8 in io_loop_run (ioloop=0x63e7f0) at ioloop.c:613 > #13 0x00007ffff75b9823 in master_service_run (service=0x63e690, > callback=callback at entry=0x423d40 <client_connected>) at master-service.c:641 > #14 0x000000000040c567 in main (argc=3, argv=0x63e390) at main.c:460 > > On Thu, Jan 19, 2017 at 1:05 PM, Thorsten Hater <thorsten.hater at gmail.com> > wrote: > >> Dear all, >> >> I experience SegFaults in the imap binary on a LIST "" "" command, >> as sent by Claws mail. Using LIST "" "INBOX" or similar is fine. >> Here is an example telnet session >> >> $ telnet 127.0.0.1 143 >> Trying 127.0.0.1... >> Connected to 127.0.0.1. >> Escape character is '^]'. >> * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE >> AUTH=PLAIN] Dovecot ready. >> 01 LOGIN **** **** >> 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE >> IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT >> MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS >> LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN >> CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA] Logged in >> 02 LIST "" "" >> Connection closed by foreign host. >> >> In the log file >> >> dovecot[8375]: imap(***): Fatal: master: service(imap): child 15803 killed >> with signal 11 (core dumps disabled) >> >> Please find the config below. >> >> Best regards, >> Thorsten >> >> $ doveconf -n >> # 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf >> # Pigeonhole version 0.4.16 (1dc4c73) >> # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 >> auth_debug = yes >> auth_debug_passwords = yes >> auth_socket_path = /var/run/dovecot/auth-userdb >> auth_verbose = yes >> base_dir = /var/run/dovecot/ >> default_internal_user = pop >> first_valid_uid = 48 >> import_environment = TZ DEBUG=1 >> last_valid_uid = 48 >> login_trusted_networks = **** >> mail_debug = yes >> mail_gid = pop >> mail_plugins = " mail_log notify zlib quota" >> mail_uid = pop >> managesieve_notify_capability = mailto >> managesieve_sieve_capability = fileinto reject envelope encoded-character >> vacation subaddress comparator-i;ascii-numeric relational regex imap4flags >> copy include variables body enotify environment mailbox date index ihave >> duplicate mime foreverypart extracttext >> namespace inbox { >> inbox = yes >> list = children >> location >> mailbox Drafts { >> auto = no >> special_use = \Drafts >> } >> mailbox Sent { >> auto = no >> special_use = \Sent >> } >> mailbox Trash { >> auto = no >> autoexpunge = 30 days >> special_use = \Trash >> } >> mailbox drafts { >> auto = no >> special_use = \Drafts >> } >> mailbox sent { >> auto = no >> special_use = \Sent >> } >> mailbox spamverdacht { >> auto = no >> autoexpunge = 30 days >> special_use = \Junk >> } >> mailbox trash { >> auto = no >> autoexpunge = 30 days >> special_use = \Trash >> } >> mailbox virenverdacht { >> auto = no >> autoexpunge = 30 days >> special_use = \Junk >> } >> prefix = INBOX. >> separator = . >> subscriptions = yes >> type = private >> } >> passdb { >> args = nopassword=y >> driver = static >> } >> plugin { >> last_login_dict = file:~/lastlogin >> mail_log_events = delete undelete expunge copy mailbox_delete >> mailbox_rename >> mail_log_fields = uid box msgid size >> quota = maildir:User quota >> quota_warning = storage=80%% 80 %u %{userdb:quota_bytes} >> quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes} >> quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes} >> sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf >> sieve_dir = ~/sieve >> sieve_plugins = sieve_storage_ldap >> zlib_save = gz >> zlib_save_level = 6 >> } >> service imap { >> executable = imap postlogin >> } >> service pop3 { >> executable = pop3 postlogin >> } >> service postlogin { >> executable = script-login -d rawlog >> } >> service quota-warning { >> executable = script /bin/quota-warning.sh >> } >> ssl = no >> userdb { >> args = /etc/dovecot/userdb-ldap.conf >> driver = ldap >> result_failure = return-fail >> result_internalfail = return-fail >> result_success = continue-ok >> } >> userdb { >> default_fields = quota_bytes=42M >> driver = bdb_quota >> override_fields = quota_rule=*:bytes=%{userdb:quota_bytes} >> result_failure = return-fail >> result_internalfail = return-fail >> result_success = continue-ok >> } >> verbose_proctitle = yes >> protocol lda { >> auth_socket_path = /var/run/dovecot/auth-userdb >> mail_plugin_dir = /lib/dovecot/modules >> mail_plugins = " mail_log notify zlib quota sieve" >> } >> protocol imap { >> mail_plugins = " mail_log notify zlib quota imap_xauth last_login >> imap_quota" >> } >> protocol pop3 { >> mail_plugins = " mail_log notify zlib quota last_login" >> } >>Hi! We are looking into this crash. Are you intentionally setting inbox namespace location to empty? Aki
Hi,
I did added the default location and stripped down my config to a very
basic
level, dropping all plugins and database queries, see below. The segfault
still
appears in the same location.
As I have build from source, I wonder whether you can reproduce the problem?
Thorsten
$ doveconf -n
# 2.2.26.0 (23d1de6): /usr/local/etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.16 (1dc4c73)
# OS: Linux 3.18.16-intel-vm-64bit x86_64 Debian 8.6
auth_debug = yes
auth_debug_passwords = yes
auth_socket_path = /usr/local/var/run/dovecot/auth-userdb
auth_verbose = yes
base_dir = /usr/local/var/run/dovecot/
default_internal_user = pop
first_valid_uid = 48
import_environment = TZ DEBUG=1
last_valid_uid = 48
login_greeting = Dovecot ready.
login_trusted_networks = ****
mail_debug = yes
mail_gid = pop
mail_location = maildir:~/Maildir
mail_plugin_dir = /usr/local/lib/dovecot/
mail_uid = pop
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags
copy include variables body enotify environment mailbox date index ihave
duplicate mime foreverypart extracttext
namespace inbox {
inbox = yes
list = children
location = maildir:~/Maildir
prefix = INBOX.
separator = .
subscriptions = yes
type = private
}
passdb {
args = nopassword=yes
driver = static
}
protocols = imap pop3 lmtp imap pop3
ssl = no
userdb {
args = home=**** uid=pop gid=pop quota_rule=*:bytes=1000M
driver = static
}
verbose_proctitle = yes
protocol lda {
auth_socket_path = /usr/local/var/run/dovecot/auth-userdb
}
On Mon, Jan 23, 2017 at 10:01 AM, Thorsten Hater <thorsten.hater at
gmail.com>
wrote:
> Hi,
>
> thanks for picking this up. The location is pulled from the database, but
> is uniform
> for all users, so I could set it to maildir:~/Maildir globally. Assuming
> ~ is expanded
> later on with userdb data. So, no, there is no special intention behind
> this.
>
> Thorsten
>
> On Mon, Jan 23, 2017 at 9:37 AM, Aki Tuomi <aki.tuomi at dovecot.fi>
wrote:
>
>>
>>
>> On 19.01.2017 15:56, Thorsten Hater wrote:
>> > The Problem arises due to a NULL deref in mail_namespaces.c line
601.
>> > Backtrace below
>> >
>> > x LIST "" ""
>> >
>> > Program received signal SIGSEGV, Segmentation fault.
>> > mail_namespaces_get_root_sep (namespaces=0x0) at
mail-namespace.c:601
>> > 601 while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX)
== 0)
>> > (gdb) bt
>> > #0 mail_namespaces_get_root_sep (namespaces=0x0) at
>> mail-namespace.c:601
>> > #1 0x000000000041164c in cmd_list_ref_root (ref=0x65b060
"",
>> > client=0x65a590) at cmd-list.c:324
>> > #2 cmd_list_full (cmd=0x65aee0, lsub=<optimized out>) at
cmd-list.c:461
>> > #3 0x0000000000419825 in command_exec (cmd=cmd at entry=0x65aee0)
at
>> > imap-commands.c:181
>> > #4 0x0000000000417de2 in client_command_input (cmd=cmd at
entry=0x65aee0)
>> at
>> > imap-client.c:988
>> > #5 0x0000000000417e70 in client_command_input (cmd=0x65aee0) at
>> > imap-client.c:1048
>> > #6 0x00000000004181e5 in client_handle_next_command
>> > (remove_io_r=<synthetic pointer>, client=0x65a590) at
imap-client.c:1090
>> > #7 client_handle_input (client=0x65a590) at imap-client.c:1102
>> > #8 0x0000000000418692 in client_input (client=0x65a590) at
>> > imap-client.c:1149
>> > #9 0x00007ffff76297ac in io_loop_call_io (io=0x652aa0) at
ioloop.c:589
>> > #10 0x00007ffff762ab4a in io_loop_handler_run_internal
>> > (ioloop=ioloop at entry=0x63e7f0)
>> > at ioloop-epoll.c:222
>> > #11 0x00007ffff7629835 in io_loop_handler_run (ioloop=ioloop at
entry
>> =0x63e7f0)
>> > at ioloop.c:637
>> > #12 0x00007ffff76299d8 in io_loop_run (ioloop=0x63e7f0) at
ioloop.c:613
>> > #13 0x00007ffff75b9823 in master_service_run (service=0x63e690,
>> > callback=callback at entry=0x423d40 <client_connected>) at
>> master-service.c:641
>> > #14 0x000000000040c567 in main (argc=3, argv=0x63e390) at
main.c:460
>> >
>> > On Thu, Jan 19, 2017 at 1:05 PM, Thorsten Hater <
>> thorsten.hater at gmail.com>
>> > wrote:
>> >
>> >> Dear all,
>> >>
>> >> I experience SegFaults in the imap binary on a LIST
"" "" command,
>> >> as sent by Claws mail. Using LIST ""
"INBOX" or similar is fine.
>> >> Here is an example telnet session
>> >>
>> >> $ telnet 127.0.0.1 143
>> >> Trying 127.0.0.1...
>> >> Connected to 127.0.0.1.
>> >> Escape character is '^]'.
>> >> * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID
ENABLE
>> IDLE
>> >> AUTH=PLAIN] Dovecot ready.
>> >> 01 LOGIN **** ****
>> >> 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS
ID ENABLE
>> >> IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS
>> THREAD=ORDEREDSUBJECT
>> >> MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE
UIDPLUS
>> >> LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT
SEARCHRES
>> WITHIN
>> >> CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA]
Logged in
>> >> 02 LIST "" ""
>> >> Connection closed by foreign host.
>> >>
>> >> In the log file
>> >>
>> >> dovecot[8375]: imap(***): Fatal: master: service(imap): child
15803
>> killed
>> >> with signal 11 (core dumps disabled)
>> >>
>> >> Please find the config below.
>> >>
>> >> Best regards,
>> >> Thorsten
>> >>
>> >> $ doveconf -n
>> >> # 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf
>> >> # Pigeonhole version 0.4.16 (1dc4c73)
>> >> # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6
>> >> auth_debug = yes
>> >> auth_debug_passwords = yes
>> >> auth_socket_path = /var/run/dovecot/auth-userdb
>> >> auth_verbose = yes
>> >> base_dir = /var/run/dovecot/
>> >> default_internal_user = pop
>> >> first_valid_uid = 48
>> >> import_environment = TZ DEBUG=1
>> >> last_valid_uid = 48
>> >> login_trusted_networks = ****
>> >> mail_debug = yes
>> >> mail_gid = pop
>> >> mail_plugins = " mail_log notify zlib quota"
>> >> mail_uid = pop
>> >> managesieve_notify_capability = mailto
>> >> managesieve_sieve_capability = fileinto reject envelope
>> encoded-character
>> >> vacation subaddress comparator-i;ascii-numeric relational
regex
>> imap4flags
>> >> copy include variables body enotify environment mailbox date
index
>> ihave
>> >> duplicate mime foreverypart extracttext
>> >> namespace inbox {
>> >> inbox = yes
>> >> list = children
>> >> location >> >> mailbox Drafts {
>> >> auto = no
>> >> special_use = \Drafts
>> >> }
>> >> mailbox Sent {
>> >> auto = no
>> >> special_use = \Sent
>> >> }
>> >> mailbox Trash {
>> >> auto = no
>> >> autoexpunge = 30 days
>> >> special_use = \Trash
>> >> }
>> >> mailbox drafts {
>> >> auto = no
>> >> special_use = \Drafts
>> >> }
>> >> mailbox sent {
>> >> auto = no
>> >> special_use = \Sent
>> >> }
>> >> mailbox spamverdacht {
>> >> auto = no
>> >> autoexpunge = 30 days
>> >> special_use = \Junk
>> >> }
>> >> mailbox trash {
>> >> auto = no
>> >> autoexpunge = 30 days
>> >> special_use = \Trash
>> >> }
>> >> mailbox virenverdacht {
>> >> auto = no
>> >> autoexpunge = 30 days
>> >> special_use = \Junk
>> >> }
>> >> prefix = INBOX.
>> >> separator = .
>> >> subscriptions = yes
>> >> type = private
>> >> }
>> >> passdb {
>> >> args = nopassword=y
>> >> driver = static
>> >> }
>> >> plugin {
>> >> last_login_dict = file:~/lastlogin
>> >> mail_log_events = delete undelete expunge copy
mailbox_delete
>> >> mailbox_rename
>> >> mail_log_fields = uid box msgid size
>> >> quota = maildir:User quota
>> >> quota_warning = storage=80%% 80 %u %{userdb:quota_bytes}
>> >> quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes}
>> >> quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes}
>> >> sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf
>> >> sieve_dir = ~/sieve
>> >> sieve_plugins = sieve_storage_ldap
>> >> zlib_save = gz
>> >> zlib_save_level = 6
>> >> }
>> >> service imap {
>> >> executable = imap postlogin
>> >> }
>> >> service pop3 {
>> >> executable = pop3 postlogin
>> >> }
>> >> service postlogin {
>> >> executable = script-login -d rawlog
>> >> }
>> >> service quota-warning {
>> >> executable = script /bin/quota-warning.sh
>> >> }
>> >> ssl = no
>> >> userdb {
>> >> args = /etc/dovecot/userdb-ldap.conf
>> >> driver = ldap
>> >> result_failure = return-fail
>> >> result_internalfail = return-fail
>> >> result_success = continue-ok
>> >> }
>> >> userdb {
>> >> default_fields = quota_bytes=42M
>> >> driver = bdb_quota
>> >> override_fields = quota_rule=*:bytes=%{userdb:quota_bytes}
>> >> result_failure = return-fail
>> >> result_internalfail = return-fail
>> >> result_success = continue-ok
>> >> }
>> >> verbose_proctitle = yes
>> >> protocol lda {
>> >> auth_socket_path = /var/run/dovecot/auth-userdb
>> >> mail_plugin_dir = /lib/dovecot/modules
>> >> mail_plugins = " mail_log notify zlib quota sieve"
>> >> }
>> >> protocol imap {
>> >> mail_plugins = " mail_log notify zlib quota imap_xauth
last_login
>> >> imap_quota"
>> >> }
>> >> protocol pop3 {
>> >> mail_plugins = " mail_log notify zlib quota
last_login"
>> >> }
>> >>
>>
>> Hi!
>>
>> We are looking into this crash.
>>
>> Are you intentionally setting inbox namespace location to empty?
>>
>> Aki
>>
>
>
I'll try reproduce this issue, but can you, in the mean time, run this with mail_debug=yes and provide logs? Aki On 23.01.2017 11:45, Thorsten Hater wrote:> Hi, > > I did added the default location and stripped down my config to a very > basic > level, dropping all plugins and database queries, see below. The segfault > still > appears in the same location. > As I have build from source, I wonder whether you can reproduce the problem? > > Thorsten > > $ doveconf -n > # 2.2.26.0 (23d1de6): /usr/local/etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.16 (1dc4c73) > # OS: Linux 3.18.16-intel-vm-64bit x86_64 Debian 8.6 > auth_debug = yes > auth_debug_passwords = yes > auth_socket_path = /usr/local/var/run/dovecot/auth-userdb > auth_verbose = yes > base_dir = /usr/local/var/run/dovecot/ > default_internal_user = pop > first_valid_uid = 48 > import_environment = TZ DEBUG=1 > last_valid_uid = 48 > login_greeting = Dovecot ready. > login_trusted_networks = **** > mail_debug = yes > mail_gid = pop > mail_location = maildir:~/Maildir > mail_plugin_dir = /usr/local/lib/dovecot/ > mail_uid = pop > managesieve_notify_capability = mailto > managesieve_sieve_capability = fileinto reject envelope encoded-character > vacation subaddress comparator-i;ascii-numeric relational regex imap4flags > copy include variables body enotify environment mailbox date index ihave > duplicate mime foreverypart extracttext > namespace inbox { > inbox = yes > list = children > location = maildir:~/Maildir > prefix = INBOX. > separator = . > subscriptions = yes > type = private > } > passdb { > args = nopassword=yes > driver = static > } > protocols = imap pop3 lmtp imap pop3 > ssl = no > userdb { > args = home=**** uid=pop gid=pop quota_rule=*:bytes=1000M > driver = static > } > verbose_proctitle = yes > protocol lda { > auth_socket_path = /usr/local/var/run/dovecot/auth-userdb > } > > > On Mon, Jan 23, 2017 at 10:01 AM, Thorsten Hater <thorsten.hater at gmail.com> > wrote: > >> Hi, >> >> thanks for picking this up. The location is pulled from the database, but >> is uniform >> for all users, so I could set it to maildir:~/Maildir globally. Assuming >> ~ is expanded >> later on with userdb data. So, no, there is no special intention behind >> this. >> >> Thorsten >> >> On Mon, Jan 23, 2017 at 9:37 AM, Aki Tuomi <aki.tuomi at dovecot.fi> wrote: >> >>> >>> On 19.01.2017 15:56, Thorsten Hater wrote: >>>> The Problem arises due to a NULL deref in mail_namespaces.c line 601. >>>> Backtrace below >>>> >>>> x LIST "" "" >>>> >>>> Program received signal SIGSEGV, Segmentation fault. >>>> mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 >>>> 601 while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX) == 0) >>>> (gdb) bt >>>> #0 mail_namespaces_get_root_sep (namespaces=0x0) at >>> mail-namespace.c:601 >>>> #1 0x000000000041164c in cmd_list_ref_root (ref=0x65b060 "", >>>> client=0x65a590) at cmd-list.c:324 >>>> #2 cmd_list_full (cmd=0x65aee0, lsub=<optimized out>) at cmd-list.c:461 >>>> #3 0x0000000000419825 in command_exec (cmd=cmd at entry=0x65aee0) at >>>> imap-commands.c:181 >>>> #4 0x0000000000417de2 in client_command_input (cmd=cmd at entry=0x65aee0) >>> at >>>> imap-client.c:988 >>>> #5 0x0000000000417e70 in client_command_input (cmd=0x65aee0) at >>>> imap-client.c:1048 >>>> #6 0x00000000004181e5 in client_handle_next_command >>>> (remove_io_r=<synthetic pointer>, client=0x65a590) at imap-client.c:1090 >>>> #7 client_handle_input (client=0x65a590) at imap-client.c:1102 >>>> #8 0x0000000000418692 in client_input (client=0x65a590) at >>>> imap-client.c:1149 >>>> #9 0x00007ffff76297ac in io_loop_call_io (io=0x652aa0) at ioloop.c:589 >>>> #10 0x00007ffff762ab4a in io_loop_handler_run_internal >>>> (ioloop=ioloop at entry=0x63e7f0) >>>> at ioloop-epoll.c:222 >>>> #11 0x00007ffff7629835 in io_loop_handler_run (ioloop=ioloop at entry >>> =0x63e7f0) >>>> at ioloop.c:637 >>>> #12 0x00007ffff76299d8 in io_loop_run (ioloop=0x63e7f0) at ioloop.c:613 >>>> #13 0x00007ffff75b9823 in master_service_run (service=0x63e690, >>>> callback=callback at entry=0x423d40 <client_connected>) at >>> master-service.c:641 >>>> #14 0x000000000040c567 in main (argc=3, argv=0x63e390) at main.c:460 >>>> >>>> On Thu, Jan 19, 2017 at 1:05 PM, Thorsten Hater < >>> thorsten.hater at gmail.com> >>>> wrote: >>>> >>>>> Dear all, >>>>> >>>>> I experience SegFaults in the imap binary on a LIST "" "" command, >>>>> as sent by Claws mail. Using LIST "" "INBOX" or similar is fine. >>>>> Here is an example telnet session >>>>> >>>>> $ telnet 127.0.0.1 143 >>>>> Trying 127.0.0.1... >>>>> Connected to 127.0.0.1. >>>>> Escape character is '^]'. >>>>> * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE >>> IDLE >>>>> AUTH=PLAIN] Dovecot ready. >>>>> 01 LOGIN **** **** >>>>> 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE >>>>> IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS >>> THREAD=ORDEREDSUBJECT >>>>> MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS >>>>> LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES >>> WITHIN >>>>> CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA] Logged in >>>>> 02 LIST "" "" >>>>> Connection closed by foreign host. >>>>> >>>>> In the log file >>>>> >>>>> dovecot[8375]: imap(***): Fatal: master: service(imap): child 15803 >>> killed >>>>> with signal 11 (core dumps disabled) >>>>> >>>>> Please find the config below. >>>>> >>>>> Best regards, >>>>> Thorsten >>>>> >>>>> $ doveconf -n >>>>> # 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf >>>>> # Pigeonhole version 0.4.16 (1dc4c73) >>>>> # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 >>>>> auth_debug = yes >>>>> auth_debug_passwords = yes >>>>> auth_socket_path = /var/run/dovecot/auth-userdb >>>>> auth_verbose = yes >>>>> base_dir = /var/run/dovecot/ >>>>> default_internal_user = pop >>>>> first_valid_uid = 48 >>>>> import_environment = TZ DEBUG=1 >>>>> last_valid_uid = 48 >>>>> login_trusted_networks = **** >>>>> mail_debug = yes >>>>> mail_gid = pop >>>>> mail_plugins = " mail_log notify zlib quota" >>>>> mail_uid = pop >>>>> managesieve_notify_capability = mailto >>>>> managesieve_sieve_capability = fileinto reject envelope >>> encoded-character >>>>> vacation subaddress comparator-i;ascii-numeric relational regex >>> imap4flags >>>>> copy include variables body enotify environment mailbox date index >>> ihave >>>>> duplicate mime foreverypart extracttext >>>>> namespace inbox { >>>>> inbox = yes >>>>> list = children >>>>> location >>>>> mailbox Drafts { >>>>> auto = no >>>>> special_use = \Drafts >>>>> } >>>>> mailbox Sent { >>>>> auto = no >>>>> special_use = \Sent >>>>> } >>>>> mailbox Trash { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Trash >>>>> } >>>>> mailbox drafts { >>>>> auto = no >>>>> special_use = \Drafts >>>>> } >>>>> mailbox sent { >>>>> auto = no >>>>> special_use = \Sent >>>>> } >>>>> mailbox spamverdacht { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Junk >>>>> } >>>>> mailbox trash { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Trash >>>>> } >>>>> mailbox virenverdacht { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Junk >>>>> } >>>>> prefix = INBOX. >>>>> separator = . >>>>> subscriptions = yes >>>>> type = private >>>>> } >>>>> passdb { >>>>> args = nopassword=y >>>>> driver = static >>>>> } >>>>> plugin { >>>>> last_login_dict = file:~/lastlogin >>>>> mail_log_events = delete undelete expunge copy mailbox_delete >>>>> mailbox_rename >>>>> mail_log_fields = uid box msgid size >>>>> quota = maildir:User quota >>>>> quota_warning = storage=80%% 80 %u %{userdb:quota_bytes} >>>>> quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes} >>>>> quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes} >>>>> sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf >>>>> sieve_dir = ~/sieve >>>>> sieve_plugins = sieve_storage_ldap >>>>> zlib_save = gz >>>>> zlib_save_level = 6 >>>>> } >>>>> service imap { >>>>> executable = imap postlogin >>>>> } >>>>> service pop3 { >>>>> executable = pop3 postlogin >>>>> } >>>>> service postlogin { >>>>> executable = script-login -d rawlog >>>>> } >>>>> service quota-warning { >>>>> executable = script /bin/quota-warning.sh >>>>> } >>>>> ssl = no >>>>> userdb { >>>>> args = /etc/dovecot/userdb-ldap.conf >>>>> driver = ldap >>>>> result_failure = return-fail >>>>> result_internalfail = return-fail >>>>> result_success = continue-ok >>>>> } >>>>> userdb { >>>>> default_fields = quota_bytes=42M >>>>> driver = bdb_quota >>>>> override_fields = quota_rule=*:bytes=%{userdb:quota_bytes} >>>>> result_failure = return-fail >>>>> result_internalfail = return-fail >>>>> result_success = continue-ok >>>>> } >>>>> verbose_proctitle = yes >>>>> protocol lda { >>>>> auth_socket_path = /var/run/dovecot/auth-userdb >>>>> mail_plugin_dir = /lib/dovecot/modules >>>>> mail_plugins = " mail_log notify zlib quota sieve" >>>>> } >>>>> protocol imap { >>>>> mail_plugins = " mail_log notify zlib quota imap_xauth last_login >>>>> imap_quota" >>>>> } >>>>> protocol pop3 { >>>>> mail_plugins = " mail_log notify zlib quota last_login" >>>>> } >>>>> >>> Hi! >>> >>> We are looking into this crash. >>> >>> Are you intentionally setting inbox namespace location to empty? >>> >>> Aki >>> >>
After trying this locally, Jan 23 11:50:41 imap: Error: namespace configuration error: list=yes namespace missing So I'm guessing you could see if changing list=children to list=yes fixes your issue. Aki On 23.01.2017 11:45, Thorsten Hater wrote:> Hi, > > I did added the default location and stripped down my config to a very > basic > level, dropping all plugins and database queries, see below. The segfault > still > appears in the same location. > As I have build from source, I wonder whether you can reproduce the problem? > > Thorsten > > $ doveconf -n > # 2.2.26.0 (23d1de6): /usr/local/etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.16 (1dc4c73) > # OS: Linux 3.18.16-intel-vm-64bit x86_64 Debian 8.6 > auth_debug = yes > auth_debug_passwords = yes > auth_socket_path = /usr/local/var/run/dovecot/auth-userdb > auth_verbose = yes > base_dir = /usr/local/var/run/dovecot/ > default_internal_user = pop > first_valid_uid = 48 > import_environment = TZ DEBUG=1 > last_valid_uid = 48 > login_greeting = Dovecot ready. > login_trusted_networks = **** > mail_debug = yes > mail_gid = pop > mail_location = maildir:~/Maildir > mail_plugin_dir = /usr/local/lib/dovecot/ > mail_uid = pop > managesieve_notify_capability = mailto > managesieve_sieve_capability = fileinto reject envelope encoded-character > vacation subaddress comparator-i;ascii-numeric relational regex imap4flags > copy include variables body enotify environment mailbox date index ihave > duplicate mime foreverypart extracttext > namespace inbox { > inbox = yes > list = children > location = maildir:~/Maildir > prefix = INBOX. > separator = . > subscriptions = yes > type = private > } > passdb { > args = nopassword=yes > driver = static > } > protocols = imap pop3 lmtp imap pop3 > ssl = no > userdb { > args = home=**** uid=pop gid=pop quota_rule=*:bytes=1000M > driver = static > } > verbose_proctitle = yes > protocol lda { > auth_socket_path = /usr/local/var/run/dovecot/auth-userdb > } > > > On Mon, Jan 23, 2017 at 10:01 AM, Thorsten Hater <thorsten.hater at gmail.com> > wrote: > >> Hi, >> >> thanks for picking this up. The location is pulled from the database, but >> is uniform >> for all users, so I could set it to maildir:~/Maildir globally. Assuming >> ~ is expanded >> later on with userdb data. So, no, there is no special intention behind >> this. >> >> Thorsten >> >> On Mon, Jan 23, 2017 at 9:37 AM, Aki Tuomi <aki.tuomi at dovecot.fi> wrote: >> >>> >>> On 19.01.2017 15:56, Thorsten Hater wrote: >>>> The Problem arises due to a NULL deref in mail_namespaces.c line 601. >>>> Backtrace below >>>> >>>> x LIST "" "" >>>> >>>> Program received signal SIGSEGV, Segmentation fault. >>>> mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 >>>> 601 while ((namespaces->flags & NAMESPACE_FLAG_LIST_PREFIX) == 0) >>>> (gdb) bt >>>> #0 mail_namespaces_get_root_sep (namespaces=0x0) at >>> mail-namespace.c:601 >>>> #1 0x000000000041164c in cmd_list_ref_root (ref=0x65b060 "", >>>> client=0x65a590) at cmd-list.c:324 >>>> #2 cmd_list_full (cmd=0x65aee0, lsub=<optimized out>) at cmd-list.c:461 >>>> #3 0x0000000000419825 in command_exec (cmd=cmd at entry=0x65aee0) at >>>> imap-commands.c:181 >>>> #4 0x0000000000417de2 in client_command_input (cmd=cmd at entry=0x65aee0) >>> at >>>> imap-client.c:988 >>>> #5 0x0000000000417e70 in client_command_input (cmd=0x65aee0) at >>>> imap-client.c:1048 >>>> #6 0x00000000004181e5 in client_handle_next_command >>>> (remove_io_r=<synthetic pointer>, client=0x65a590) at imap-client.c:1090 >>>> #7 client_handle_input (client=0x65a590) at imap-client.c:1102 >>>> #8 0x0000000000418692 in client_input (client=0x65a590) at >>>> imap-client.c:1149 >>>> #9 0x00007ffff76297ac in io_loop_call_io (io=0x652aa0) at ioloop.c:589 >>>> #10 0x00007ffff762ab4a in io_loop_handler_run_internal >>>> (ioloop=ioloop at entry=0x63e7f0) >>>> at ioloop-epoll.c:222 >>>> #11 0x00007ffff7629835 in io_loop_handler_run (ioloop=ioloop at entry >>> =0x63e7f0) >>>> at ioloop.c:637 >>>> #12 0x00007ffff76299d8 in io_loop_run (ioloop=0x63e7f0) at ioloop.c:613 >>>> #13 0x00007ffff75b9823 in master_service_run (service=0x63e690, >>>> callback=callback at entry=0x423d40 <client_connected>) at >>> master-service.c:641 >>>> #14 0x000000000040c567 in main (argc=3, argv=0x63e390) at main.c:460 >>>> >>>> On Thu, Jan 19, 2017 at 1:05 PM, Thorsten Hater < >>> thorsten.hater at gmail.com> >>>> wrote: >>>> >>>>> Dear all, >>>>> >>>>> I experience SegFaults in the imap binary on a LIST "" "" command, >>>>> as sent by Claws mail. Using LIST "" "INBOX" or similar is fine. >>>>> Here is an example telnet session >>>>> >>>>> $ telnet 127.0.0.1 143 >>>>> Trying 127.0.0.1... >>>>> Connected to 127.0.0.1. >>>>> Escape character is '^]'. >>>>> * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE >>> IDLE >>>>> AUTH=PLAIN] Dovecot ready. >>>>> 01 LOGIN **** **** >>>>> 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE >>>>> IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS >>> THREAD=ORDEREDSUBJECT >>>>> MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS >>>>> LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES >>> WITHIN >>>>> CONTEXT=SEARCH LIST-STATUS BINARY MOVE SPECIAL-USE QUOTA] Logged in >>>>> 02 LIST "" "" >>>>> Connection closed by foreign host. >>>>> >>>>> In the log file >>>>> >>>>> dovecot[8375]: imap(***): Fatal: master: service(imap): child 15803 >>> killed >>>>> with signal 11 (core dumps disabled) >>>>> >>>>> Please find the config below. >>>>> >>>>> Best regards, >>>>> Thorsten >>>>> >>>>> $ doveconf -n >>>>> # 2.2.26.0 (23d1de6): /etc/dovecot/dovecot.conf >>>>> # Pigeonhole version 0.4.16 (1dc4c73) >>>>> # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 >>>>> auth_debug = yes >>>>> auth_debug_passwords = yes >>>>> auth_socket_path = /var/run/dovecot/auth-userdb >>>>> auth_verbose = yes >>>>> base_dir = /var/run/dovecot/ >>>>> default_internal_user = pop >>>>> first_valid_uid = 48 >>>>> import_environment = TZ DEBUG=1 >>>>> last_valid_uid = 48 >>>>> login_trusted_networks = **** >>>>> mail_debug = yes >>>>> mail_gid = pop >>>>> mail_plugins = " mail_log notify zlib quota" >>>>> mail_uid = pop >>>>> managesieve_notify_capability = mailto >>>>> managesieve_sieve_capability = fileinto reject envelope >>> encoded-character >>>>> vacation subaddress comparator-i;ascii-numeric relational regex >>> imap4flags >>>>> copy include variables body enotify environment mailbox date index >>> ihave >>>>> duplicate mime foreverypart extracttext >>>>> namespace inbox { >>>>> inbox = yes >>>>> list = children >>>>> location >>>>> mailbox Drafts { >>>>> auto = no >>>>> special_use = \Drafts >>>>> } >>>>> mailbox Sent { >>>>> auto = no >>>>> special_use = \Sent >>>>> } >>>>> mailbox Trash { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Trash >>>>> } >>>>> mailbox drafts { >>>>> auto = no >>>>> special_use = \Drafts >>>>> } >>>>> mailbox sent { >>>>> auto = no >>>>> special_use = \Sent >>>>> } >>>>> mailbox spamverdacht { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Junk >>>>> } >>>>> mailbox trash { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Trash >>>>> } >>>>> mailbox virenverdacht { >>>>> auto = no >>>>> autoexpunge = 30 days >>>>> special_use = \Junk >>>>> } >>>>> prefix = INBOX. >>>>> separator = . >>>>> subscriptions = yes >>>>> type = private >>>>> } >>>>> passdb { >>>>> args = nopassword=y >>>>> driver = static >>>>> } >>>>> plugin { >>>>> last_login_dict = file:~/lastlogin >>>>> mail_log_events = delete undelete expunge copy mailbox_delete >>>>> mailbox_rename >>>>> mail_log_fields = uid box msgid size >>>>> quota = maildir:User quota >>>>> quota_warning = storage=80%% 80 %u %{userdb:quota_bytes} >>>>> quota_warning2 = storage=90%% 90 %u %{userdb:quota_bytes} >>>>> quota_warning3 = storage=95%% 95 %u %{userdb:quota_bytes} >>>>> sieve = ldap:/etc/dovecot/pigeonhole-ldap.conf >>>>> sieve_dir = ~/sieve >>>>> sieve_plugins = sieve_storage_ldap >>>>> zlib_save = gz >>>>> zlib_save_level = 6 >>>>> } >>>>> service imap { >>>>> executable = imap postlogin >>>>> } >>>>> service pop3 { >>>>> executable = pop3 postlogin >>>>> } >>>>> service postlogin { >>>>> executable = script-login -d rawlog >>>>> } >>>>> service quota-warning { >>>>> executable = script /bin/quota-warning.sh >>>>> } >>>>> ssl = no >>>>> userdb { >>>>> args = /etc/dovecot/userdb-ldap.conf >>>>> driver = ldap >>>>> result_failure = return-fail >>>>> result_internalfail = return-fail >>>>> result_success = continue-ok >>>>> } >>>>> userdb { >>>>> default_fields = quota_bytes=42M >>>>> driver = bdb_quota >>>>> override_fields = quota_rule=*:bytes=%{userdb:quota_bytes} >>>>> result_failure = return-fail >>>>> result_internalfail = return-fail >>>>> result_success = continue-ok >>>>> } >>>>> verbose_proctitle = yes >>>>> protocol lda { >>>>> auth_socket_path = /var/run/dovecot/auth-userdb >>>>> mail_plugin_dir = /lib/dovecot/modules >>>>> mail_plugins = " mail_log notify zlib quota sieve" >>>>> } >>>>> protocol imap { >>>>> mail_plugins = " mail_log notify zlib quota imap_xauth last_login >>>>> imap_quota" >>>>> } >>>>> protocol pop3 { >>>>> mail_plugins = " mail_log notify zlib quota last_login" >>>>> } >>>>> >>> Hi! >>> >>> We are looking into this crash. >>> >>> Are you intentionally setting inbox namespace location to empty? >>> >>> Aki >>> >>