[Dovecot] LMTP crash with sdbox and SIS

[Timo Sirainen]

On Wed, 2013-06-12 at 19:51 +0000, Bernhard Schmidt wrote:
> Debian Wheezy amd64 plus Stefan's stable-auto/dovecot2.2 repository
> 2:2.2.2-0~auto+57 = 16495:d447dcc6b611
> 
> Crash goes away when I disable mail_attachment_dir, happens with a
> fresh home as well
..
> Jun 12 21:46:23 lxmhs69 dovecot: lmtp(20120,
> ext44903 at mstoretest.mail.xxx.de): Panic: file istream.c: line 163
> (i_stream_read): assertion failed: (old_size == _stream->pos -
> _stream->skip)

Can you easily reproduce this? Does it happen with all mails? Only mails
that contain attachments? Only one specific mail? I couldn't reproduce
with a couple of tests.