[Bug 1102366] [NEW] libapache2-mod-php5: Segmentation fault on mediawiki POST requests after apache2 reload

Philipp Kaluza 1102366 at bugs.launchpad.net
Mon Jan 21 11:46:59 UTC 2013

Public bug reported:

This is the affected following setup:
* apache2-mpm-worker
* libapache2-mod-php5
* mediawiki
(all from quantal in my case).

After doing "/etc/init.d/apache2 reload", POST requests to mediawiki (e.g. page preview or save) fail with a lost connection. The log files only show a line like this:
[Mon Jan 21 12:21:06 2013] [notice] child pid 16018 exit signal Segmentation fault (11)

Doing "/etc/init.d/apache2 restart" works around the problem.

This seems to be the same as http://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=691318 and possibly http://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=694473 . I'm blaming PHP for now, in accordance
with the upstream reporters. :-)

Creating a backtrace from the apache child processes has proved quite
challenging, so I'm stopping here.

Thank you for your consideration,

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: libapache2-mod-php5 5.4.6-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
Uname: Linux 3.5.0-19-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
Date: Mon Jan 21 12:34:51 2013
MarkForUpload: True
SourcePackage: php5
UpgradeStatus: Upgraded to quantal on 2012-12-10 (41 days ago)

** Affects: php5 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: php5 (Debian)
     Importance: Unknown
         Status: Unknown

** Tags: amd64 apport-bug quantal

** Bug watch added: Debian Bug tracker #691318

** Also affects: php5 (Debian) via
   Importance: Unknown
       Status: Unknown

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  libapache2-mod-php5: Segmentation fault on mediawiki POST requests
  after apache2 reload

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