[Bug 61028] New: mod_fcgid extensive memory allocations causes OOM

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[Bug 61028] New: mod_fcgid extensive memory allocations causes OOM

Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=61028

            Bug ID: 61028
           Summary: mod_fcgid extensive memory allocations causes OOM
           Product: Apache httpd-2
           Version: 2.4.6
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_fcgid
          Assignee: [hidden email]
          Reporter: [hidden email]
  Target Milestone: ---

Created attachment 34942
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=34942&action=edit
Core dump backtrace

OS: CentOS 7.3.1611
Package: mod_fcgid-2.3.9-4.el7.x86_64
Error:
[ 8677.328169] Out of memory: Kill process 3314 (httpd) score 844 or sacrifice
child
[ 8677.333848] Killed process 3314 (httpd) total-vm:836236kB,
anon-rss:421320kB, file-rss:0kB, shmem-rss:12kB

# httpd -V
Server version: Apache/2.4.6 (CentOS)
Server built:   Apr 12 2017 21:03:28
Server's Module Magic Number: 20120211:24
Server loaded:  APR 1.4.8, APR-UTIL 1.5.2
Compiled using: APR 1.4.8, APR-UTIL 1.5.2
Architecture:   64-bit
Server MPM:     event
  threaded:     yes (fixed thread count)
    forked:     yes (variable process count)
Server compiled with....
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=256
 -D HTTPD_ROOT="/etc/httpd"
 -D SUEXEC_BIN="/usr/sbin/suexec"
 -D DEFAULT_PIDLOG="/run/httpd/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"


Also affected:
  Apache/2.2.15 (CentOS 6.9), package: mod_fcgid-2.3.9-1.el6.x86_64
  Apache/2.4.18 (Ubuntu 16.04.1), package: libapache2-mod-fcgid 2.3.9-1



Debug with memory limit (LimitAS=768M):

error.log:
[Sun Apr 23 13:11:19.986041 2017] [core:notice] [pid 3581:tid 139686508890240]
AH00051: child pid 3584 exit signal Segmentation fault (11), possible coredump
in /tmp

Core dump backtrace attached.

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[Bug 61028] mod_fcgid extensive memory allocations causes OOM

Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=61028

Mario <[hidden email]> changed:

           What    |Removed                     |Added
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                 CC|                            |[hidden email]

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[Bug 61028] mod_fcgid extensive memory allocations causes OOM

Bugzilla from bugzilla@apache.org
In reply to this post by Bugzilla from bugzilla@apache.org
https://bz.apache.org/bugzilla/show_bug.cgi?id=61028

Joe Orton <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|NEW                         |RESOLVED

--- Comment #1 from Joe Orton <[hidden email]> ---
Likely a duplicate of bug 51747.

*** This bug has been marked as a duplicate of bug 51747 ***

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