Bug#923283: dovecot-sieve: panic in i_stream_concat_close: assertion failed: (cstream->cur_input == cstream->input[cstream->cur_idx])
On 26 Feb 2019, at 9.20, Graham Cobb wrote:
>
> 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>:
> Panic: file istream-concat.c:
> line 25 (i_stream_concat_close): assertion failed: (cstream->cur_input ==
> cstream->input[cstream->cur_idx])
..
> 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.
Is this still happening? Could you send me/Stephan the full Sieve script that
causes the crash? As you said, it's not enough to cause the crash with just
that small snippet.
Bug#923283: dovecot-sieve: panic in i_stream_concat_close: assertion failed: (cstream->cur_input == cstream->input[cstream->cur_idx])
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>: 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>: 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 ...@xxx.com Thu Feb 21 23:33:46 2019
Delivered-To: x...@.uk.net
Return-Path:
X-Original-To: xxwhois_grcxxx@localhost
Delivered-To: x...@.uk.net
To: xx...@.com
Subject:
xxx
From: xx xx - xxx xxx
Content-Type: text/plain; charset=utf-8
Message-Id: <20190221232525.e87682ed2...@xxx.com>
Date: Thu, 21 Feb 2019 23:25:25 + (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 =
pn dovecot-gssapi
ii dovecot-imapd 1:2.3.4.1-1
pn dovecot-ldap
pn dovecot-lmtpd
pn dovecot-managesieved
pn dovecot-mysql
pn dovecot-pgsql
pn dovecot-pop3d
ii dovecot-sieve 1:2.3.4.1-1
pn dovecot-sqlite
-- no debconf information
