Package: dovecot-sieve
Version: 1:2.3.4.1-1
Severity: normal
When processing a particular type of notification email, I consistently get the
following sieve crash during execution of /usr/lib/dovecot/dovecot-lda.
(note, extracted from mail.log and reformatted a little for readability)
Feb 25 19:22:46 black dovecot: lda(cobb)<7721><SmI+AoZAdFwpHgAAy7SJiA>: Panic:
file istream-concat.c:
line 25 (i_stream_concat_close): assertion failed: (cstream->cur_input ==
cstream->input[cstream->cur_idx])
Feb 25 19:22:46 black dovecot: lda(cobb)<7721><SmI+AoZAdFwpHgAAy7SJiA>: Error:
Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0xdad0b) [0x7faa1caead0b] ->
/usr/lib/dovecot/libdovecot.so.0(+0xdad71) [0x7faa1caead71] ->
/usr/lib/dovecot/libdovecot.so.0(+0x4a19f) [0x7faa1ca5a19f] ->
/usr/lib/dovecot/libdovecot.so.0(+0x4c185) [0x7faa1ca5c185] ->
/usr/lib/dovecot/libdovecot.so.0(io_stream_unref+0x27) [0x7faa1caf3a07] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_unref+0x1d) [0x7faa1caf697d] ->
/usr/lib/dovecot/libdovecot-storage.so.0(index_storage_mailbox_close+0x69)
[0x7faa1cc76b79] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_close+0x24) [0x7faa1cbf9ed4]
->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_free+0x13) [0x7faa1cbf9f43] ->
/usr/lib/dovecot/dovecot-lda(main+0x756) [0x5626a8ac6dd6] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7faa1c81c09b] ->
/usr/lib/dovecot/dovecot-lda(_start+0x2a) [0x5626a8ac747a]
I can reproduce the crash consistently with a particular type of message being
delivered to a particular account with a fairly large set of sieve scripts.
I have managed to reduce the message to a small test message but I have not been
able to reproduce the crash with a significantly simpler script.
The actual line in the sieve script being executed at the time of the crash is
the first line of
the following (the test would not be satisfied on this message):
if body :raw :contains "://docs.google.com" {
addheader "X-GRC-SIEVE-Message" "Deleted by Google Docs low
tolerance filter";
fileinto "${spam_medium}";
stop;
}
If I comment out that test, or even just remove the ":raw" clause, the script
executes.
However a small script just containing that test does not crash.
I would rather not attach the full scripts to this report, but can provide them
to the
maintainer if required.
The test message to reproduce the crash is:
>From xxxx...@xxxxxxxxxxxxxxxxxxxxxxx.com Thu Feb 21 23:33:46 2019
Delivered-To: x...@xxxx.uk.net
Return-Path: <xxxx...@xxxxxxxxxxxxxxxxxxxxxxx.com>
X-Original-To: xxwhois_grcxxxxxxx@localhost
Delivered-To: x...@xxxx.uk.net
To: xxxxxx...@xxxxxxxx.com
Subject:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
From: xxxxxx xxxxxx - xxxxxxx xxxxxxx <xxxx...@xxxxxxx.com>
Content-Type: text/plain; charset=utf-8
Message-Id: <20190221232525.e87682ed2...@xxxxxxxxxxxxxxxxxxxxxxx.com>
Date: Thu, 21 Feb 2019 23:25:25 +0000 (GMT)
Test message
-- Package-specific info:
dovecot configuration
---------------------
# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 ()
# OS: Linux 4.19.0-2-amd64 x86_64 Debian buster/sid
# Hostname: black.home.cobb.me.uk
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_trusted_networks = 192.168.0.0/16 127.0.0.1
mail_location = maildir:~/dovecot:INDEX=/var/indexes/%u
mail_max_userip_connections = 50
mail_privileged_group = mail
maildir_stat_dirs = yes
namespace {
hidden = yes
inbox = no
list = children
location = mbox:~/mail
prefix = "#mbox/"
separator = /
type = private
}
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 = /
}
passdb {
driver = pam
}
passdb {
args = scheme=SSHA512 username_format=%n /etc/dovecot/users
driver = passwd-file
}
plugin {
sieve = file:~/sieve;active=~/.dovecot.sieve
sieve_extensions = +editheader +vnd.dovecot.debug
}
postmaster_address = postmas...@cobb.uk.net
protocols = " imap"
service imap {
process_limit = 100
}
service pop3 {
process_limit = 100
}
ssl_cert = </etc/dovecot/private/dovecot.pem
ssl_client_ca_dir = /etc/ssl/certs
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
driver = passwd
}
userdb {
args = username_format=%n /etc/dovecot/users
driver = passwd-file
}
protocol lmtp {
mail_plugins = " sieve"
}
protocol lda {
mail_plugins = " sieve"
}
-- System Information:
Debian Release: buster/sid
APT prefers testing
APT policy: (900, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.19.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IE.utf8, LC_CTYPE=en_IE.utf8 (charmap=UTF-8) (ignored: LC_ALL
set to en_IE.utf8), LANGUAGE=en_IE.utf8 (charmap=UTF-8) (ignored: LC_ALL set to
en_IE.utf8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages dovecot-sieve depends on:
ii dovecot-core 1:2.3.4.1-1
ii libc6 2.28-6
ii ucf 3.0038+nmu1
dovecot-sieve recommends no packages.
dovecot-sieve suggests no packages.
Versions of packages dovecot-sieve is related to:
ii dovecot-core [dovecot-common] 1:2.3.4.1-1
pn dovecot-dev <none>
pn dovecot-gssapi <none>
ii dovecot-imapd 1:2.3.4.1-1
pn dovecot-ldap <none>
pn dovecot-lmtpd <none>
pn dovecot-managesieved <none>
pn dovecot-mysql <none>
pn dovecot-pgsql <none>
pn dovecot-pop3d <none>
ii dovecot-sieve 1:2.3.4.1-1
pn dovecot-sqlite <none>
-- no debconf information
