Segmentation fault (SEGV) in cyrus ptloader / CentOS 7

[Cornelius Hald]

Hi guys,

after running Kolab for some time (8-24 hours) users can no longer log
in because of authentication failures. It looks like ptloader crashes
with a SEGV.

In maillog it looks like this:

Nov 14 16:46:06 mail imap[4673]: starttls: TLSv1.2 with cipher
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Nov 14 16:46:06 mail imap[4673]: ptload(): empty response from ptloader
server
Nov 14 16:46:06 mail imap[4673]: ptload failed: but canonified
r.k at xxx.de -> r.k at xxx.de
Nov 14 16:46:06 mail master[4665]: process type:SERVICE name:ptloader
path:/usr/lib/cyrus-imapd/ptloader age:32.631s pid:4684 signaled to
death by signal 11 (Segmentation fault)
Nov 14 16:46:06 mail master[4665]: service ptloader/unix pid 4684 in
READY state: terminated abnormally
[...]
Nov 14 16:46:22 mail master[4665]: too many failures for service
ptloader/unix, disabling until next SIGHUP

In dmesg it shows like this:
[ 1012.770129] ptloader[4335]: segfault at 18 ip 00007fd4157c446d sp
00007fffde58cfa0 error 4 in libc-2.17.so[7fd415748000+1b6000]
[ 1017.321219] ptloader[4342]: segfault at 18 ip 00007fb0d771e46d sp
00007fff2c2d7900 error 4 in libc-2.17.so[7fb0d76a2000+1b6000]
[ 1017.734248] ptloader[4347]: segfault at 18 ip 00007fd0a694346d sp
00007fff0043fda0 error 4 in libc-2.17.so[7fd0a68c7000+1b6000]


Does anyone having the same issues? I'm running on CentOS 7.


Thanks!
Conny