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

[Marc Deslauriers]

Uploaded to quantal for processing by the SRU team. Thanks!

** Description changed:

+ SRU request:
+ 
+ [impact]
+ Reloading apache2 will cause php5 to fail to work correctly, and will result in some website failures. This has been solved by backporting a minimal patch from more recent versions of php.
+ 
+ [test case]
+ Reproducing this requires a specific setup, but the original bug reporter has tested the update and it has resolved the issue. The issue was also known to php upstream and has been fixed in saucy and higher.
+ 
+ [regression potential]
+ An issue with this patch would cause php sessions to break, so it should be quickly discoverable.
+ 
+ 
+ Original report:
+ 
  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,
-   Philipp
+   Philipp
  
  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)

** Changed in: php5 (Ubuntu Quantal)
       Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/1102366

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

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