[rt-users] One particular ticket crashes RT 3.8.7

[Chris Herrmann]

Hi guys,

at this stage I'm just hoping to find out where to look, to get more
information. Scenario is:
- Viewing or comment / replying on a specific ticket causes the page to
fail. Other tickets are fine.
- Viewing the same ticket via the mobile interface is OK
- Emailing the ticket wtih updated comments is OK
- I haven't tried CLI yet so can't comment
- Upgrading RT isn't an option right now
- It isn't consistent - it doesn't always fail. Fail rate appears to be
around 9/10 times

The only logs of note that I can find are:
apache vhost access_log - just shows me that the page got hit e.g.
  /Ticket/Update.html?Action=Comment&id=106648
 /Ticket/Display.html?id=106648
apache vhost error_log - empty
apache default error log - has:
[Mon Aug 05 12:58:24 2013] [notice] child pid 7013 exit signal Segmentation
faul

these correspond to when i try to view this specific ticket.
Based upon some list emails I saw kicking around last week I've added:
Set($LogToSyslog    , 'debug');
Set($LogToScreen    , 'error');
Set($LogToFile      , undef);
Set($LogDir, '/var/log/rt3');
Set($LogToFileNamed , "rt3.log");    #log to rt.log

to RT_SiteConfig.pm
but... there's nothing logging to /var/log/rt3
/var/log/debug contains:
Aug  5 13:45:59 sirius RT: We found a merged ticket.106966/106648
Aug  5 13:45:59 sirius RT: We found a merged ticket.106969/106648
Aug  5 13:46:02 sirius RT: We found a merged ticket.106966/106648
Aug  5 13:46:02 sirius RT: last message repeated 35 times
Aug  5 13:46:02 sirius RT: We found a merged ticket.106969/106648
Aug  5 13:46:02 sirius RT: last message repeated 44 times
Aug  5 13:46:02 sirius RT: We found a merged ticket.106966/106648
Aug  5 13:46:02 sirius RT: We found a merged ticket.106969/106648
Aug  5 13:46:02 sirius RT: last message repeated 11 times
Aug  5 13:46:02 sirius RT: We found a merged ticket.106966/106648
/var/log/syslog (ditto)
/var/log/user.log
 even more of it...
Aug  5 13:46:02 sirius RT: We found a merged ticket.106966/106648
Aug  5 13:46:21 sirius RT: last message repeated 42 times



Other notes:
- hitting the page chews a lot of CPU for a long time before finally dieing
- the ticket is large (a lot of text) but it's by no means the largest
ticket we have by an order of magnitude. These other larger tickets are
fine...

Help! Not sure where I should be looking... Thanks!

Regards,

Chris
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