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Subject DO NOT REPLY [Bug 44538] New: Large file using download accelerator causes child segfault.
Date Wed, 05 Mar 2008 13:15:36 GMT

           Summary: Large file using download accelerator causes child
           Product: Apache httpd-2
           Version: 2.2.8
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: perchild

When orbitdownloader (web download accelerator) is used to download a file over
https like, the child keeps

[Wed Mar 05 06:52:39 2008] [notice] child pid 4720 exit signal Segmentation
fault (11)
[Wed Mar 05 06:52:46 2008] [notice] child pid 4721 exit signal Segmentation
fault (11)
[Wed Mar 05 06:57:11 2008] [notice] child pid 4705 exit signal Segmentation
fault (11)
[Wed Mar 05 06:57:17 2008] [notice] child pid 4711 exit signal Segmentation
fault (11)
[Wed Mar 05 06:57:23 2008] [notice] child pid 4708 exit signal Segmentation
fault (11)
[Wed Mar 05 06:57:29 2008] [notice] child pid 4707 exit signal Segmentation
fault (11)
[Wed Mar 05 06:57:35 2008] [notice] child pid 4795 exit signal Segmentation
fault (11)

Tested using LFTP too and got the same result:

lftp -c pget "", got 463620543 of
7019348523 (6%) 6.16M/s

Apparently this issue only happens when there are more than 2 splits of the
file. If using only 2 splits of the file or single connection, no such error

The file is downloaded directly from the directory index page.

Server version: Apache/2.2.8 (Unix)
Server built:   Mar  4 2008 18:10:57
Server's Module Magic Number: 20051115:11
Server loaded:  APR 1.2.12, APR-Util 1.2.12
Compiled using: APR 1.2.12, APR-Util 1.2.12
Architecture:   32-bit
Server MPM:     Prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D HTTPD_ROOT="/usr/local/apache2"
 -D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="logs/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"

There are the modules in use:
LoadModule authn_file_module modules/
LoadModule authz_host_module modules/
LoadModule authz_user_module modules/
LoadModule auth_basic_module modules/
LoadModule auth_digest_module modules/
LoadModule log_config_module modules/
LoadModule log_forensic_module modules/
LoadModule ssl_module modules/
LoadModule mime_module modules/
LoadModule vhost_alias_module modules/
LoadModule dir_module modules/
LoadModule alias_module modules/
LoadModule php5_module        modules/

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