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Apache child segfault on loading one particular ticket

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rjb38 at drexel

May 7, 2008, 1:23 PM

Post #1 of 4 (137 views)
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Apache child segfault on loading one particular ticket

We've been running RT 3.6.4 on Redhat EL 5 / mysql 5.0.22 / apache /
mod_perl for some time with no problems. Today I hear from a user who
has a ticket that doesn't display completely. It's a fairly long ticket,
but we have much bigger ones that display fine.

In the apache error_log I see:

[Wed May 07 15:53:06 2008] [notice] child pid 4762 exit signal
Segmentation fault (11)

every time someone tries to load the ticket. Nothing is logged by mysql
or rt. All other tickets seem to be working fine.

Any thoughts on what this could be, or how to begin debugging it?

Thanks in advance,

Rich
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cmsilva at mobicomp

May 7, 2008, 2:08 PM

Post #2 of 4 (128 views)
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Re: Apache child segfault on loading one particular ticket [In reply to]

Hi all,
I've have been suffering from this same problem and I suspect some kind of bug on the RT encoding handling code.
For me it happens when my users paste stuff from Excel files or introduce the € symbol on their replies.

To correct this list all transactions on the database envolving the ticket, and see the date where the RT web interface "cuts off". The next transaction is the one that is screwed up, look for odd characters like "\t" or stuff like that on the corresponding entry on the attachments table and replace them.

Good luck.

Regards,
Carlos Silva

-----Original Message-----
From: rt-users-bounces[at]lists.bestpractical.com [mailto:rt-users-bounces[at]lists.bestpractical.com] On Behalf Of Rich Bishop
Sent: Wednesday, May 07, 2008 9:23 PM
To: RT Users
Subject: [rt-users] Apache child segfault on loading one particular ticket

We've been running RT 3.6.4 on Redhat EL 5 / mysql 5.0.22 / apache /
mod_perl for some time with no problems. Today I hear from a user who
has a ticket that doesn't display completely. It's a fairly long ticket,
but we have much bigger ones that display fine.

In the apache error_log I see:

[Wed May 07 15:53:06 2008] [notice] child pid 4762 exit signal
Segmentation fault (11)

every time someone tries to load the ticket. Nothing is logged by mysql
or rt. All other tickets seem to be working fine.

Any thoughts on what this could be, or how to begin debugging it?

Thanks in advance,

Rich
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Community help: http://wiki.bestpractical.com
Commercial support: sales[at]bestpractical.com

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Buy a copy at http://rtbook.bestpractical.com

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Buy a copy at http://rtbook.bestpractical.com

alexsm at gmail

May 7, 2008, 2:49 PM

Post #3 of 4 (125 views)
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Re: Apache child segfault on loading one particular ticket [In reply to]

Hi,

The fix for a problem like this - if it is the same one reported before - is
in 2.04 and above versions of the Text::Quoted module. For us, the version
2.05 solved an issue like you reported.

Don't forget to stop/start the webserver.

Best regards,

Alex

rjb38 at drexel

May 8, 2008, 8:07 AM

Post #4 of 4 (112 views)
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Re: Apache child segfault on loading one particular ticket [In reply to]

Thanks for the responses. It was indeed a non-ascii character, and
upgraded Text::Quoted from 2.02 to 2.05 fixed it.

Rich

Alex Moura wrote:
> Hi,
>
> The fix for a problem like this - if it is the same one reported
> before - is in 2.04 and above versions of the Text::Quoted module. For
> us, the version 2.05 solved an issue like you reported.
>
> Don't forget to stop/start the webserver.
>
>
> Best regards,
>
> Alex

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