Package: dovecot-imapd
Version: 1:2.2.27-3+deb9u1
Severity: important
Dear Maintainer,
* What led up to the situation?
We are using dovecot IMAPD from Debian stable (9.1 / stretch)
Enabled zlib plugin in dovecot configuration. Appended
mail_plugins = $mail_plugins zlib
line to dovecot config based on online documentation. See
https://wiki.dovecot.org/Plugins/Zlib
* What was the outcome of this action?
After opening a gzipped Mbox folder using an IMAP client,
dovecot-imapd process exited. mail.log contained the following
# Oct 26 09:37:27 odin dovecot: imap(gburjan): Panic: file istream-zlib.c: line
416 (i_stream_zlib_seek): assertion failed: (ret == -1)
# Oct 26 09:37:27 odin dovecot: imap(gburjan): Error: Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0x95272) [0x7f9cdf8da272] ->
/usr/lib/dovecot/libdovecot.so.0(+0x9536d) [0x7f9cdf8da36d] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f9cdf870951] ->
/usr/lib/dovecot/modules/lib20_zlib_plugin.so(+0x5883) [0x7f9cdf09b883] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_seek+0x56) [0x7f9cdf8e5006] ->
/usr/lib/dovecot/libdovecot-storage.so.0(istream_raw_mbox_get_body_size+0x1b9)
[0x7f9cdfbd9a89] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x7f41b)
[0x7f9cdfbe541b] -> /usr/lib/dovecot/libdovecot-storage.so.0(mbox_sync+0x48)
[0x7f9cdfbe78b8] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mbox_storage_sync_init+0x85)
[0x7f9cdfbe7a45] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x3b)
[0x7f9cdfba702b] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37)
[0x7f9cdfba7177] -> dovecot/imap(cmd_select_full+0x18e) [0x55db13c724ae] ->
dovecot/imap(command_exec+0xa5) [
0x55db13c79735] -> dovecot/imap(+0x199c2) [0x55db13c779c2] ->
dovecot/imap(+0x19a4c) [0x55db13c77a4c] ->
dovecot/imap(client_handle_input+0x1b5) [0x55db13c77e55] ->
dovecot/imap(client_input+0x86) [0x55db13c783c6] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x52) [0x7f9cdf8eedd2] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x109)
[0x7f9cdf8f0409] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x3c)
[0x7f9cdf8eee6c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7f9cdf8ef018] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f9cdf876e93] -> dovecot/imap(main+0x328) [0x55db13c6ae68] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f9cdf4c62b1] ->
dovecot/imap(_start+0x2a) [0x55db13c6afea]
# Oct 26 09:37:27 odin dovecot: imap(gburjan): Fatal: master: service(imap):
child 16445 killed with signal 6 (core dumps disabled)
* What outcome did you expect instead?
Read-only access over imap to gzipped mbox folder.
-- Package-specific info:
dovecot configuration
---------------------
# 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.16 (fed8554)
# OS: Linux 4.9.50-x86_64-linode86 x86_64 Debian 9.1
mail_location = mbox:~/Mail:INBOX=/var/mail/%u
mail_plugins = " zlib"
mail_privileged_group = mail
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 =
}
passdb {
driver = pam
}
protocols = " imap pop3"
ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_key = # hidden, use -P to show it
userdb {
driver = passwd
}
-- System Information:
Debian Release: 9.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.50-x86_64-linode86 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=hu_HU.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages dovecot-imapd depends on:
ii dovecot-core 1:2.2.27-3+deb9u1
ii libbz2-1.0 1.0.6-8.1
ii libc6 2.24-11+deb9u1
ii liblz4-1 0.0~r131-2+b1
ii liblzma5 5.2.2-1.2+b1
ii ucf 3.0036
ii zlib1g 1:1.2.8.dfsg-5
dovecot-imapd recommends no packages.
Versions of packages dovecot-imapd suggests:
pn ufw <none>
Versions of packages dovecot-imapd is related to:
ii dovecot-core [dovecot-common] 1:2.2.27-3+deb9u1
pn dovecot-dbg <none>
pn dovecot-dev <none>
pn dovecot-gssapi <none>
ii dovecot-imapd 1:2.2.27-3+deb9u1
pn dovecot-ldap <none>
pn dovecot-lmtpd <none>
pn dovecot-managesieved <none>
pn dovecot-mysql <none>
pn dovecot-pgsql <none>
ii dovecot-pop3d 1:2.2.27-3+deb9u1
pn dovecot-sieve <none>
pn dovecot-sqlite <none>
-- no debconf information
