Tom Lieuallen
2014-Apr-17 00:05 UTC
[Dovecot] segfault with shared namespace version > 2.1.16
We're currently running 2.1.16. I've been wanting to update to a 2.2.X
version, but have been running into problems, even with the latest
(2.2.12). I'm not sure at what version this issue appeared, but I
believe I've tried 2.2.10, 2.2.11, and now 2.2.12.
We have a shared maildir setup. With that configuration in place and
with a user in the dovecot-acl file, I can do the following to make it
segfault every time. Note if I comment out the shared namespace config,
it does not segfault.
/private/dovecot/libexec/dovecot/imap -u tom2
* PREAUTH [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 SPECIAL-USE BINARY
MOVE] Logged in as tom2
l list "" *
Segmentation fault (core dumped)
The /a1 and /a2 mentioned here for shared folders and indexes are both
local ext4 file systems.
==========
Here is the output of dovecot -n:
# 2.2.12: /private/dovecot/etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-431.el6.x86_64 x86_64 CentOS release 6.5 (Final)
first_valid_uid = 100
listen = *
mail_location = mbox:~/mail:INBOX=/var/mail/%u:INDEX=/a2/imap-index/%u
mail_plugins = quota acl
namespace {
hidden = yes
inbox = no
list = children
location = maildir:/a1/dove-shared:INDEX=/a2/imap-index/dove-shared/%u
prefix = sharedimap/
separator = /
type = shared
}
namespace inbox {
inbox = yes
location mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix separator = /
type = private
}
passdb {
args = /private/dovecot/etc/dovecot/dovecot-ldap.conf.ext
driver = ldap
}
passdb {
args = scheme=CRYPT username_format=%u /private/dovecot/etc/passwd
driver = passwd-file
}
plugin {
acl = vfile
quota = fs:INBOX:mount=/a1
quota2 = fs:Home quota:mount=%h
}
protocols = imap lmtp
service imap-login {
process_limit = 500
process_min_avail = 16
service_count = 1
}
service imap {
process_limit = 2048
}
ssl_cert = </private/ssl/certs/mail.engr.oregonstate.edu.pem
ssl_key = </private/ssl/certs/mail.engr.oregonstate.edu.pem
userdb {
args = /private/dovecot/etc/dovecot/dovecot-ldap.conf.ext
driver = ldap
}
userdb {
args = username_format=%u /private/dovecot/etc/passwd
driver = passwd-file
}
=============
I've got core dumps from it. I assume the gdb examples give a reverse
trace of the calls. If more is needed, I can supply.
Core was generated by `/private/dovecot/libexec/dovecot/imap -u tom2'.
Program terminated with signal 11, Segmentation fault.
#0 mailbox_settings_find (user=0x6866c0,
vname=0x670800 "sharedimap/support-reports") at
mail-storage.c:624
624 {
Missing separate debuginfos, use: debuginfo-install
glibc-2.12-1.132.el6.x86_64 sssd-client-1.9.2-129.el6.x86_64
(gdb) bt full
#0 mailbox_settings_find (user=0x6866c0,
vname=0x670800 "sharedimap/support-reports") at
mail-storage.c:624
box_set = <value optimized out>
ns = <value optimized out>
#1 0x00007f1cb0323fd0 in mailbox_list_get_storage (list=0x7fff73b39088,
vname=<value optimized out>, storage_r=0x7fff73b39080)
at mailbox-list.c:821
set = <value optimized out>
#2 0x00007f1cb03164a7 in mail_namespace_find_shared (
namespaces=<value optimized out>,
mailbox=0x670800 "sharedimap/support-reports") at
mail-namespace.c:651
list = 0x68ea30
storage = 0x0
#3 mail_namespace_find (namespaces=<value optimized out>,
mailbox=0x670800 "sharedimap/support-reports") at
mail-namespace.c:669
ns = 0x68ad70
__FUNCTION__ = "mail_namespace_find"
....
....
thank you
Tom Lieuallen
Oregon State University
Tom Lieuallen
2014-Apr-24 20:14 UTC
[Dovecot] segfault with shared namespace version > 2.1.16
Nobody bit on this yet. :-) I regret my choice of subject; perhaps it's not appealing/appropriate as it mentions an older version. I did narrow down the problem a little. This configuration works up through 2.2.2. At version 2.2.3 and beyond, I get segfaults. So, something changed with 2.2.3 that our configuration is tickling. I'll continue to poke at it, but those who look at core dumps would probably get right to the issue. thank you Tom Lieuallen On 4/16/14, 5:05 PM, Tom Lieuallen wrote:> We're currently running 2.1.16. I've been wanting to update to a 2.2.X > version, but have been running into problems, even with the latest > (2.2.12). I'm not sure at what version this issue appeared, but I > believe I've tried 2.2.10, 2.2.11, and now 2.2.12. > > We have a shared maildir setup. With that configuration in place and > with a user in the dovecot-acl file, I can do the following to make it > segfault every time. Note if I comment out the shared namespace config, > it does not segfault. > > /private/dovecot/libexec/dovecot/imap -u tom2 > * PREAUTH [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 SPECIAL-USE BINARY > MOVE] Logged in as tom2 > l list "" * > Segmentation fault (core dumped) > > The /a1 and /a2 mentioned here for shared folders and indexes are both > local ext4 file systems. > > ==========> > Here is the output of dovecot -n: > > # 2.2.12: /private/dovecot/etc/dovecot/dovecot.conf > # OS: Linux 2.6.32-431.el6.x86_64 x86_64 CentOS release 6.5 (Final) > first_valid_uid = 100 > listen = * > mail_location = mbox:~/mail:INBOX=/var/mail/%u:INDEX=/a2/imap-index/%u > mail_plugins = quota acl > namespace { > hidden = yes > inbox = no > list = children > location = maildir:/a1/dove-shared:INDEX=/a2/imap-index/dove-shared/%u > prefix = sharedimap/ > separator = / > type = shared > } > namespace inbox { > inbox = yes > location > mailbox Drafts { > special_use = \Drafts > } > mailbox Junk { > special_use = \Junk > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent Messages" { > special_use = \Sent > } > mailbox Trash { > special_use = \Trash > } > prefix > separator = / > type = private > } > passdb { > args = /private/dovecot/etc/dovecot/dovecot-ldap.conf.ext > driver = ldap > } > passdb { > args = scheme=CRYPT username_format=%u /private/dovecot/etc/passwd > driver = passwd-file > } > plugin { > acl = vfile > quota = fs:INBOX:mount=/a1 > quota2 = fs:Home quota:mount=%h > } > protocols = imap lmtp > service imap-login { > process_limit = 500 > process_min_avail = 16 > service_count = 1 > } > service imap { > process_limit = 2048 > } > ssl_cert = </private/ssl/certs/mail.engr.oregonstate.edu.pem > ssl_key = </private/ssl/certs/mail.engr.oregonstate.edu.pem > userdb { > args = /private/dovecot/etc/dovecot/dovecot-ldap.conf.ext > driver = ldap > } > userdb { > args = username_format=%u /private/dovecot/etc/passwd > driver = passwd-file > } > > =============> > I've got core dumps from it. I assume the gdb examples give a reverse > trace of the calls. If more is needed, I can supply. > > Core was generated by `/private/dovecot/libexec/dovecot/imap -u tom2'. > Program terminated with signal 11, Segmentation fault. > #0 mailbox_settings_find (user=0x6866c0, > vname=0x670800 "sharedimap/support-reports") at mail-storage.c:624 > 624 { > Missing separate debuginfos, use: debuginfo-install > glibc-2.12-1.132.el6.x86_64 sssd-client-1.9.2-129.el6.x86_64 > (gdb) bt full > #0 mailbox_settings_find (user=0x6866c0, > vname=0x670800 "sharedimap/support-reports") at mail-storage.c:624 > box_set = <value optimized out> > ns = <value optimized out> > #1 0x00007f1cb0323fd0 in mailbox_list_get_storage (list=0x7fff73b39088, > vname=<value optimized out>, storage_r=0x7fff73b39080) > at mailbox-list.c:821 > set = <value optimized out> > #2 0x00007f1cb03164a7 in mail_namespace_find_shared ( > namespaces=<value optimized out>, > mailbox=0x670800 "sharedimap/support-reports") at mail-namespace.c:651 > list = 0x68ea30 > storage = 0x0 > #3 mail_namespace_find (namespaces=<value optimized out>, > mailbox=0x670800 "sharedimap/support-reports") at mail-namespace.c:669 > ns = 0x68ad70 > __FUNCTION__ = "mail_namespace_find" > .... > .... > > > thank you > > Tom Lieuallen > Oregon State University
Timo Sirainen
2014-May-02 08:59 UTC
[Dovecot] segfault with shared namespace version > 2.1.16
On 17.4.2014, at 3.05, Tom Lieuallen <toml at engr.orst.edu> wrote:> We're currently running 2.1.16. I've been wanting to update to a 2.2.X version, but have been running into problems, even with the latest (2.2.12). I'm not sure at what version this issue appeared, but I believe I've tried 2.2.10, 2.2.11, and now 2.2.12. > > We have a shared maildir setup. With that configuration in place and with a user in the dovecot-acl file, I can do the following to make it segfault every time. Note if I comment out the shared namespace config, it does not segfault. > > #0 mailbox_settings_find (user=0x6866c0, > vname=0x670800 "sharedimap/support-reports") at mail-storage.c:624 > box_set = <value optimized out> > ns = <value optimized out> > #1 0x00007f1cb0323fd0 in mailbox_list_get_storage (list=0x7fff73b39088, > vname=<value optimized out>, storage_r=0x7fff73b39080) > at mailbox-list.c:821 > set = <value optimized out> > #2 0x00007f1cb03164a7 in mail_namespace_find_shared ( > namespaces=<value optimized out>, > mailbox=0x670800 "sharedimap/support-reports") at mail-namespace.c:651 > list = 0x68ea30 > storage = 0x0 > #3 mail_namespace_find (namespaces=<value optimized out>, > mailbox=0x670800 "sharedimap/support-reports") at mail-namespace.c:669 > ns = 0x68ad70 > __FUNCTION__ = "mail_namespace_find" > .... > ....Fixed: http://hg.dovecot.org/dovecot-2.2/rev/930b6b1346bd