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Bug#511103: marked as done (apache2-mpm-prefork: MPM Prefork/Itk Segmentation fault under heavy load)



Your message dated Fri, 16 Jan 2009 18:32:06 +0000
with message-id <E1LNtUE-0005xt-3L@ries.debian.org>
and subject line Bug#511103: fixed in apache2 2.2.11-2
has caused the Debian Bug report #511103,
regarding apache2-mpm-prefork: MPM Prefork/Itk Segmentation fault under heavy load
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
511103: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511103
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: apache2-mpm-prefork
Version: 2.2.9-10+lenny1
Severity: normal


Under some heavy load, with the default configuration and even without any
module, apache2 segfaults : 

[Wed Jan 07 14:42:27 2009] [notice] child pid 11525 exit signal Segmentation fault (11)
[Wed Jan 07 14:42:27 2009] [notice] child pid 11526 exit signal Segmentation fault (11)
[Wed Jan 07 14:42:27 2009] [notice] child pid 11527 exit signal Segmentation fault (11)
[Wed Jan 07 14:42:27 2009] [notice] child pid 11528 exit signal Segmentation fault (11)


Tested on 2 different servers (64bit) and can be reproduced with : 

  ab -n 100000 -c 500   http://localhost/

No issue with apache2-mpm-worked. 


-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.27.8-em64t (SMP w/4 CPU cores)
Locale: LANG=fr_FR@euro, LC_CTYPE=fr_FR@euro (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages apache2-mpm-prefork depends on:
ii  apache2.2-common         2.2.9-10+lenny1 Apache HTTP Server common files
ii  libapr1                  1.2.12-5        The Apache Portable Runtime Librar
ii  libaprutil1              1.2.12+dfsg-8   The Apache Portable Runtime Utilit
ii  libc6                    2.7-16          GNU C Library: Shared libraries
ii  libpcre3                 7.6-2.1         Perl 5 Compatible Regular Expressi

apache2-mpm-prefork recommends no packages.

apache2-mpm-prefork suggests no packages.



--- End Message ---
--- Begin Message ---
Source: apache2
Source-Version: 2.2.11-2

We believe that the bug you reported is fixed in the latest version of
apache2, which is due to be installed in the Debian FTP archive:

apache2-dbg_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-dbg_2.2.11-2_i386.deb
apache2-doc_2.2.11-2_all.deb
  to pool/main/a/apache2/apache2-doc_2.2.11-2_all.deb
apache2-mpm-event_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-mpm-event_2.2.11-2_i386.deb
apache2-mpm-prefork_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-mpm-prefork_2.2.11-2_i386.deb
apache2-mpm-worker_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-mpm-worker_2.2.11-2_i386.deb
apache2-prefork-dev_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-prefork-dev_2.2.11-2_i386.deb
apache2-src_2.2.11-2_all.deb
  to pool/main/a/apache2/apache2-src_2.2.11-2_all.deb
apache2-suexec-custom_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-suexec-custom_2.2.11-2_i386.deb
apache2-suexec_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-suexec_2.2.11-2_i386.deb
apache2-threaded-dev_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-threaded-dev_2.2.11-2_i386.deb
apache2-utils_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2-utils_2.2.11-2_i386.deb
apache2.2-common_2.2.11-2_i386.deb
  to pool/main/a/apache2/apache2.2-common_2.2.11-2_i386.deb
apache2_2.2.11-2.diff.gz
  to pool/main/a/apache2/apache2_2.2.11-2.diff.gz
apache2_2.2.11-2.dsc
  to pool/main/a/apache2/apache2_2.2.11-2.dsc
apache2_2.2.11-2_all.deb
  to pool/main/a/apache2/apache2_2.2.11-2_all.deb



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 511103@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Stefan Fritsch <sf@debian.org> (supplier of updated apache2 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Fri, 16 Jan 2009 19:01:59 +0100
Source: apache2
Binary: apache2.2-common apache2-mpm-worker apache2-mpm-prefork apache2-mpm-event apache2-utils apache2-suexec apache2-suexec-custom apache2 apache2-doc apache2-prefork-dev apache2-threaded-dev apache2-src apache2-dbg
Architecture: source i386 all
Version: 2.2.11-2
Distribution: unstable
Urgency: low
Maintainer: Debian Apache Maintainers <debian-apache@lists.debian.org>
Changed-By: Stefan Fritsch <sf@debian.org>
Description: 
 apache2    - Apache HTTP Server metapackage
 apache2-dbg - Apache debugging symbols
 apache2-doc - Apache HTTP Server documentation
 apache2-mpm-event - Apache HTTP Server - event driven model
 apache2-mpm-prefork - Apache HTTP Server - traditional non-threaded model
 apache2-mpm-worker - Apache HTTP Server - high speed threaded model
 apache2-prefork-dev - Apache development headers - non-threaded MPM
 apache2-src - Apache source code
 apache2-suexec - Standard suexec program for Apache 2 mod_suexec
 apache2-suexec-custom - Configurable suexec program for Apache 2 mod_suexec
 apache2-threaded-dev - Apache development headers - threaded MPM
 apache2-utils - utility programs for webservers
 apache2.2-common - Apache HTTP Server common files
Closes: 511103
Changes: 
 apache2 (2.2.11-2) unstable; urgency=low
 .
   * Report an error instead instead of segfaulting when apr_pollset_create
     fails (PR 46467). On Linux kernels since 2.6.27.8, the value in
     /proc/sys/fs/epoll/max_user_instances needs to be larger than twice the
     value of MaxClients in the Apache configuration. Closes: #511103
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--- End Message ---

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