dovecot - Jul 2012 - Panic: file mail-storage.c: line 791 (mailbox_check_mismatching_separators)

Hi,

with fetching the folder structure with the webclient Tine i can see following
error messages inside of the logfiles:

Panic: file mail-storage.c: line 791 (mailbox_check_mismatching_separators):
assertion failed: (strncmp(vname, ns->prefix, ns->prefix_len-1) == 0)

Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x448fa)
[0x7f70036db8fa] -> /usr/lib/dovecot/libdovecot.so.0(+0x44946)
[0x7f70036db946] -> /usr/lib/dovecot/libdovecot.so.0(+0x1b8ca)
[0x7f70036b28ca] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open_stream+0) [0x7f70039a1550]
-> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open+0xf)
[0x7f70039a156f] -> dovecot/imap(cmd_select_full+0x14a) [0x40db1a] ->
dovecot/imap(command_exec+0x3d) [0x41160d] -> dovecot/imap() [0x41058e] ->
dovecot/imap() [0x41066d] -> dovecot/imap(client_handle_input+0x135)
[0x410895] -> dovecot/imap(client_input+0x5f) [0x4111bf] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f70036e7ea6] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9f) [0x7f70036e8f2f]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x28) [0x7f70036e7e48] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f70036d4103] ->
dovecot/imap(main+0x2a5) [0x419695] -> /lib/libc.so.6(__libc_start_main+0xfd)
[0x7f7003353c8d] -> dovecot/imap() [0x408f49]

Fatal: master: service(imap): child 21152 killed with signal 6 (core dumps
disabled)

------------
dovecot -n
------------
# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.5 ext4
first_valid_gid = 104
first_valid_uid = 107
last_valid_gid = 104
last_valid_uid = 107
login_trusted_networks = 10.20.11.4
mail_gid = 104
mail_location = maildir:/var/spool/dovecot/%Ld/%Ln/Maildir
mail_plugins = quota acl
mail_privileged_group = mail
mail_uid = 107
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 ihave
namespace {
? hidden = no
? list = children
? location =
maildir:/var/spool/dovecot/%%d/%%n/Maildir:INDEX=/var/spool/dovecot/%d/%n/Maildir/shared/%%n
? prefix = shared/%%n/
? separator = /
? type = shared
}
namespace inbox {
? inbox = yes
? location ? prefix = INBOX/
? separator = /
? type = private
}
namespace virtual {
? alias_for = INBOX/
? hidden = yes
? list = no
? location ? prefix ? separator = /
? type = private
}
passdb {
? args = /etc/dovecot/dovecot-ldap.conf.ext
? driver = ldap
}
plugin {
? acl = vfile
? acl_shared_dict = file:/var/spool/dovecot/%d/shared-mailboxes
? quota = maildir:User quota
? quota_rule = *:storage=1GB
? sieve = /var/spool/dovecot/%Ld/%Ln/.dovecot.sieve
? sieve_dir = /var/spool/dovecot/%Ld/%Ln/sieve
}
postmaster_address = postmaster at rocnet.de
protocols = " imap sieve pop3 sieve"
service auth {
? unix_listener auth-userdb {
??? group = dovecot
??? mode = 0660
??? user = vmail
? }
}
service imap-login {
? inet_listener imap {
??? port = 0
? }
? inet_listener imaps {
??? port = 993
??? ssl = yes
? }
}
service imap {
? process_limit = 1024
}
service pop3-login {
? inet_listener pop3 {
??? port = 0
? }
? inet_listener pop3s {
??? port = 995
??? ssl = yes
? }
}
service pop3 {
? process_limit = 1024
}
ssl_cert = </etc/ssl/certs/pop3d.pem
ssl_key = </etc/ssl/private/pop3d.pem
userdb {
? args = /etc/dovecot/dovecot-ldap.conf.ext
? driver = ldap
}
protocol lda {
? mail_plugins = quota acl sieve
}
protocol imap {
? mail_plugins = quota acl imap_quota imap_acl
}


I checked if there are special characters in the folder structure but there are
only standard ones.

----
Claus

Could i send some more informations about this topic? I'm not sure whats
happening here but i think it has something to do with the shared mailboxes.
With cyrus i had following folder structure:

user1 -> inbox -> subfolders
          -> user -> user1
                       -> user2


With dovecot the folder structure look like:

user1 -> inbox -> subfolders
          -> shared -> user1 -> inbox
                           -> user2 -> inbox

is there any way to show inbox directly in user1/user2 folder without
having an inbox subfolder?



Am 22.07.2012 00:04, schrieb Claus Rosenberger:
> Hi,
>
> with fetching the folder structure with the webclient Tine i can see
following error messages inside of the logfiles:
>
> Panic: file mail-storage.c: line 791
(mailbox_check_mismatching_separators): assertion failed: (strncmp(vname,
ns->prefix, ns->prefix_len-1) == 0)
>
> Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x448fa)
[0x7f70036db8fa] -> /usr/lib/dovecot/libdovecot.so.0(+0x44946)
[0x7f70036db946] -> /usr/lib/dovecot/libdovecot.so.0(+0x1b8ca)
[0x7f70036b28ca] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open_stream+0) [0x7f70039a1550]
-> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open+0xf)
[0x7f70039a156f] -> dovecot/imap(cmd_select_full+0x14a) [0x40db1a] ->
dovecot/imap(command_exec+0x3d) [0x41160d] -> dovecot/imap() [0x41058e] ->
dovecot/imap() [0x41066d] -> dovecot/imap(client_handle_input+0x135)
[0x410895] -> dovecot/imap(client_input+0x5f) [0x4111bf] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f70036e7ea6] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9f) [0x7f70036e8f2f]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x28) [0x7f70036e7e48] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f70036d4103] ->
dovecot/imap(main+0x2a5) [0x419695] -> /lib/libc.so.6(__libc_start_main+0xfd)
[0x7f7003353c8d] -> dovecot/imap() [0x408f49]
>
> Fatal: master: service(imap): child 21152 killed with signal 6 (core dumps
disabled)
>