[Dovecot] Bug or other issue? Jan 22 00:02:09 argon postfix/pipe[21251]: E8126A3671: to=<mbj at seonic.net>, orig_to=<root>, relay=dovecot, delay=0.38, delays=0.03/0/0/0.35, dsn=5.3.0, status=bounced (Command died with signal 6: "/usr/libexec/dovecot/deliver")

[Markus Schirp]

Hi,

I found the following in my logfiles: 
The failure is not reproducable at the moment. 
System is delivering mails to mailboxes with no problems at all.

It is a production installation with medium load.

dovecot --version: 1.1.7
OS: Linux (Gentoo/x86 stable) - grsec enabled kernel

deliver.log:

deliver(user at example.tld): Panic: file istream-tee.c: line 144 (i_stream_tee_read): assertion failed: (ret > 0)
deliver(user at example.tld): 
  Error: Raw backtrace: 
     /usr/libexec/dovecot/deliver [0x80c8032] -> 
    /usr/libexec/dovecot/deliver(default_fatal_handler+0x3a) [0x80c812a] -> 
    /usr/libexec/dovecot/deliver [0x80c796c] -> 
    /usr/libexec/dovecot/deliver [0x80cf5f8] -> 
    /usr/libexec/dovecot/deliver(i_stream_read+0x2d) [0x80cc5dd] -> 
    /usr/libexec/dovecot/deliver(i_stream_read_data+0x1d) [0x80cc6ed] -> 
    /usr/libexec/dovecot/deliver [0x80d52cb] -> 
    /usr/libexec/dovecot/deliver(o_stream_send_istream+0x35) [0x80d45b5] -> 
    /usr/libexec/dovecot/deliver(maildir_save_continue+0x32) [0x806fbb2] -> 
    /usr/libexec/dovecot/deliver(mail_storage_copy+0xd2) [0x8096512] -> 
    /usr/libexec/dovecot/deliver(maildir_copy+0x5b) [0x806c51b] -> 
    /usr/libexec/dovecot/deliver(deliver_save+0x17d) [0x805cbfd] -> 
    /usr/libexec/dovecot/deliver(main+0x161b) [0x805e41b] -> 
    /lib/libc.so.6(__libc_start_main+0xdc) [0x559a7fdc] -> 
    /usr/libexec/dovecot/deliver [0x805bb41]

mta.log (postfix with dovecot/deliver pipe transport):
  Jan 22 00:02:09 argon postfix/pipe[21251]: E8126A3671: to=<user at example.tld>, orig_to=<localalias>, relay=dovecot, delay=0.38, delays=0.03/0/0/0.35, dsn=5.3.0, status=bounced (Command died with signal 6: "/usr/libexec/dovecot/deliver")

Neither the grsec.log nor dmesg said anything special.

The box had filesystem issues a month ago. I sucessufly fscked it. Do you think its a hidden fs problem or a dovecot issue?

Here in Germay the time is at 0:30, I'll sleep some hours until I can
respond to "need more information request (conf-file, or so)"

Thx in advance!

Markus Schirp