<div dir="ltr"><div dir="ltr">I got a core file this morning.<div><br></div><div>opening it with gdb I get this:</div><div><br><div>(gdb) core imap.core </div><div>Core was generated by `dovecot/imap'.</div><div>Program terminated with signal 6, Aborted.</div><div>#0 0x0000000011c1347a in ?? ()</div><div>(gdb) bt</div><div>#0 0x0000000011c1347a in ?? ()</div><div>#1 0x0000000011c13444 in ?? ()</div><div>#2 0x0000000000018dee in ?? ()</div><div>#3 0x306db139575f3b0d in ?? ()</div><div>#4 0x00007fffffffc144 in ?? ()</div><div>#5 0x0000000000000000 in ?? ()<br><br>Doesn't look clean at all. <br><br>let me know if I should upload the file somewhere. </div><div><br></div><div>Thanks</div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno lun 21 gen 2019 alle ore 08:52 Giacomo <<a href="mailto:giacomo1989@gmail.com">giacomo1989@gmail.com</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">I've just enabled core dumps on the involved FreeBSD system. Let's see if it dumps something..</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno dom 20 gen 2019 alle ore 19:16 Stephan Bosch <<a href="mailto:stephan@rename-it.nl" target="_blank">stephan@rename-it.nl</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Giacomo,<br>
<br>
Op 21/12/2018 om 16:16 schreef Giacomo:<br>
> The bug happens not very often, it might need a week to get a core file.<br>
<br>
Any luck getting a core file?<br>
<br>
Regards,<br>
<br>
Stephan.<br>
><br>
><br>
> Il giorno ven 21 dic 2018 alle ore 15:18 Aki Tuomi <br>
> <<a href="mailto:aki.tuomi@open-xchange.com" target="_blank">aki.tuomi@open-xchange.com</a> <mailto:<a href="mailto:aki.tuomi@open-xchange.com" target="_blank">aki.tuomi@open-xchange.com</a>>> ha <br>
> scritto:<br>
><br>
><br>
>Â Â Â On 21.12.2018 14.49, Giacomo wrote:<br>
>Â Â Â > I'm running the following:<br>
>Â Â Â ><br>
>Â Â Â > # 2.3.4 (0ecbaf23d): /usr/local/etc/dovecot/dovecot.conf<br>
>Â Â Â > # OS: FreeBSD 11.2-RELEASE-p4 amd64<br>
>Â Â Â > # FS: ZFS<br>
>Â Â Â ><br>
>Â Â Â > auth_mechanisms = plain login<br>
>Â Â Â > auth_username_format = %Ln<br>
>Â Â Â > listen = *<br>
>Â Â Â > mail_location = maildir:~/Maildir<br>
>Â Â Â > namespace inbox {<br>
>Â Â Â > Â inbox = yes<br>
>Â Â Â > Â location =<br>
>Â Â Â > Â mailbox Drafts {<br>
>Â Â Â > Â Â auto = subscribe<br>
>Â Â Â > Â Â special_use = \Drafts<br>
>Â Â Â > Â }<br>
>Â Â Â > Â mailbox Junk {<br>
>Â Â Â > Â Â auto = subscribe<br>
>Â Â Â > Â Â special_use = \Junk<br>
>Â Â Â > Â }<br>
>Â Â Â > Â mailbox Sent {<br>
>Â Â Â > Â Â special_use = \Sent<br>
>Â Â Â > Â }<br>
>Â Â Â > Â mailbox Trash {<br>
>Â Â Â > Â Â auto = subscribe<br>
>Â Â Â > Â Â special_use = \Trash<br>
>Â Â Â > Â }<br>
>Â Â Â > Â prefix =<br>
>Â Â Â > }<br>
>Â Â Â > passdb {<br>
>Â Â Â > Â driver = pam<br>
>Â Â Â > }<br>
>Â Â Â > protocols = imap lmtp<br>
>Â Â Â > service auth {<br>
>Â Â Â > Â unix_listener /var/spool/postfix/private/auth {<br>
>Â Â Â > Â Â group = postfix<br>
>Â Â Â > Â Â mode = 0666<br>
>Â Â Â > Â Â user = postfix<br>
>Â Â Â > Â }<br>
>Â Â Â > Â user = dovecot<br>
>Â Â Â > }<br>
>Â Â Â > service imap-login {<br>
>Â Â Â > Â inet_listener imap {<br>
>Â Â Â > Â Â port = 0<br>
>Â Â Â > Â }<br>
>Â Â Â > }<br>
>Â Â Â > service lmtp {<br>
>Â Â Â > Â unix_listener /var/spool/postfix/private/dovecot-lmtp {<br>
>Â Â Â > Â Â group = postfix<br>
>Â Â Â > Â Â mode = 0600<br>
>Â Â Â > Â Â user = postfix<br>
>Â Â Â > Â }<br>
>Â Â Â > }<br>
>Â Â Â > service stats {<br>
>Â Â Â > Â unix_listener stats-reader {<br>
>Â Â Â > Â Â group =<br>
>Â Â Â > Â Â mode = 0600<br>
>Â Â Â > Â Â user =<br>
>Â Â Â > Â }<br>
>Â Â Â > Â unix_listener stats-writer {<br>
>Â Â Â > Â Â group = $default_internal_group<br>
>Â Â Â > Â Â mode = 0666<br>
>Â Â Â > Â Â user =<br>
>Â Â Â > Â }<br>
>Â Â Â > Â user = $default_internal_user<br>
>Â Â Â > }<br>
>Â Â Â > ssl_cert = </root/cert.pem<br>
>Â Â Â > ssl_key = # hidden, use -P to show it<br>
>Â Â Â > userdb {<br>
>Â Â Â > Â driver = passwd<br>
>Â Â Â > }<br>
>Â Â Â ><br>
>Â Â Â > dmesg shows:<br>
>Â Â Â ><br>
>Â Â Â > pid 74441 (imap), uid 1002: exited on signal 6<br>
>Â Â Â > pid 74784 (imap), uid 1002: exited on signal 6<br>
>Â Â Â > pid 21471 (imap), uid 1002: exited on signal 6<br>
>Â Â Â > pid 21470 (imap), uid 1002: exited on signal 6<br>
>Â Â Â > pid 21464 (imap), uid 1002: exited on signal 6<br>
>Â Â Â > pid 21731 (imap), uid 1002: exited on signal 6<br>
>Â Â Â ><br>
>Â Â Â > Sometimes the dovecot process serving an user crashes. He runs<br>
>Â Â Â mostly<br>
>Â Â Â > airmail on macOS and samsung mail on Android.<br>
>Â Â Â ><br>
>Â Â Â > Happens only to that particular user.<br>
>Â Â Â ><br>
>Â Â Â > The log shows the following: (maillog)<br>
>Â Â Â ><br>
>Â Â Â > Dec 16 14:52:35 mail dovecot: imap-login: Login: user=<USER>,<br>
>Â Â Â > method=PLAIN, rip=79.12.201.157, lip=192.168.1.28, mpid=74779, TLS,<br>
>Â Â Â > session=<wMQI+iN9VtRPDMmd><br>
>Â Â Â > Dec 16 14:52:39 mail dovecot: imap(USER)<74441><nLa+7SN9+fhPDMmd>:<br>
>Â Â Â > Panic: file charset-iconv.c: line 83 (charset_to_utf8_try):<br>
>Â Â Â assertion<br>
>Â Â Â > failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)<br>
>Â Â Â > Dec 16 14:52:39 mail dovecot: imap(USER)<74441><nLa+7SN9+fhPDMmd>:<br>
>Â Â Â > Fatal: master: service(imap): child 74441 killed with signal 6 (core<br>
>Â Â Â > not dumped - <a href="https://dovecot.org/bugreport.html#coredumps" rel="noreferrer" target="_blank">https://dovecot.org/bugreport.html#coredumps</a> - set<br>
>Â Â Â > service imap { drop_priv_before_exec=yes })<br>
>Â Â Â ><br>
>Â Â Â > I'm here if more info is needed.<br>
>Â Â Â ><br>
>Â Â Â > Thanks for taking a look.<br>
><br>
><br>
>Â Â Â Can you somehow get a core file and get backtrace from it?<br>
><br>
><br>
>Â Â Â Aki<br>
><br>
<br>
</blockquote></div>
</blockquote></div>