Segmentation fault (SEGV) in cyrus ptloader / CentOS 7

[Cornelius Hald]

I forgot to add: From looking at the output of ps it looks like gdb is
started correctly.

[root at mail ~]# ps ax|grep -i ptloader
25207 ?        S      0:00 ptloader -D
25218 ?        S      0:00 /usr/bin/gdb -batch -cd=/tmp
-x /usr/local/lib/cyrus-get-backtrace.gdb /usr/lib/cyrus-imapd/ptloader
-p 25207



On Tue, 2014-11-18 at 16:52 +0100, Cornelius Hald wrote:
> On Tue, 2014-11-18 at 11:24 +1300, Torsten Grote wrote:
> > On 11/18/2014 10:08 AM, Cornelius Hald wrote:
> > > Thanks for the link, but I'm not sure I want to try it just yet. I'm
> > > afraid about making things worse. But maybe I'll give it a try after
> > > creating the stack trace.
> > 
> > There have been a lot of fixes in this Cyrus package, so it *might*
> > fix your problem as well. Also, then we see if the issue still happens
> > with latest packages and you do not need to debug. But yes, better try
> > this only on a test system.
> 
> I'll setup a test system and give that a try soon. Currently I'm trying
> to get a stack trace from ptloader. I think I've set things up
> correctly, but unfortunately I don't get anything. Maybe you (or someone
> here) could help me with that.
> 
> Here is what I did:
> 
> * Installed cyrus-imapd-debuginfo and gdb
> 
> * In cyrus.conf added '-D' to ptloader the line is now:
> ptloader cmd="ptloader -D" listen="/var/lib/imap/ptclient/ptsock"
> 
> * Added a file '/usr/local/lib/cyrus-get-backtrace.gdb' with content:
> c
> bt
> quit
> 
> * In imapd.conf added
> debug_command: /usr/bin/gdb -batch -cd=/tmp
> -x /usr/local/lib/cyrus-get-backtrace.gdb /usr/lib/cyrus-imapd/%s -p %d
> >/tmp/gdb-backtrace.cyrus.%1$s.%2$d <&- 2>&1 &
> 
> 
> Unfortunately I do not get any of those gdb-backtrace file in /tmp
> 
> Any ideas?
> 
> Thanks!
> Conny
> 
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