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DescriptionHansjoerg Maurer
2016-01-10 10:21:35 UTC
Description of problem:
We have a RHEL7.2 System running with a zarafa mailserver
After some days the webserver shows the following errors and zarafa webmail shows errors
[Thu Jan 07 19:03:37.083671 2016] [core:notice] [pid 3864] AH00052: child pid 95202 exit signal Segmentation fault (11)
[Thu Jan 07 19:03:38.087174 2016] [core:notice] [pid 3864] AH00052: child pid 95199 exit signal Segmentation fault (11)
[Thu Jan 07 19:03:40.089149 2016] [core:notice] [pid 3864] AH00052: child pid 95204 exit signal Segmentation fault (11)
[Thu Jan 07 19:03:41.091406 2016] [core:notice] [pid 3864] AH00052: child pid 95211 exit signal Segmentation fault (11)
A restart of the webserver solves the problem
Version-Release number of selected component (if applicable):
php-5.4.16-36.el7_1.x86_64
How reproducible:
Install
php-5.4.16-36.el7_1.x86_64
zarafa-server-7.2.1.51838-319.2.x86_64
Steps to Reproduce:
1. Install zarafa
2. use webapp about 2 weeks
3. try to upload attachments -> DOES NOT WORK
4. the errors above occur
Actual results:
Expected results:
Additional info:
According to zarafa the problem is related to the following php-Bug
https://bugs.php.net/bug.php?id=62129
which is fixed upstream in 5.4.20
http://php.net/ChangeLog-5.php
Here you can find the related zarafa issue
https://jira.zarafa.com/browse/WA-8975
The related diff between 5.4.19 and 5.4.20 is
diff php-5.4.19/ext/session/session.c php-5.4.20/ext/session/session.c
...
2249,2250c2249,2253
< /* restore the orig callback */
< php_rfc1867_callback = php_session_rfc1867_orig_callback;
---
> /* reset rfc1867 callbacks */
> php_session_rfc1867_orig_callback = NULL;
> if (php_rfc1867_callback == php_session_rfc1867_callback) {
> php_rfc1867_callback = NULL;
> }
Can you backport the fix?
Regards
Hansjoerg Maurer
Comment 3john.haxby@oracle.com
2016-03-08 10:21:56 UTC
It should be obvious, but that patch doesn't apply directly. The two lines that are replaced don't actually exist because they were added by 336a8e1943af.
Apparently the patch does fix this problem though.
The issue referenced above looks specific to PHP 5.4, the relevant ext/session code handling progress callbacks doesn't appear in 5.3. Anybody hitting server crashes in production, please contact Red Hat support who can help you identify a root cause for this.
Thanks John.
Patrick, my advice above definitely applies: if you need help with a production deployment of RHEL please contact Red Hat support and reference this bug, we can get you test packages as necessary.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHSA-2016-2598.html