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From David Begley <d.beg...@uws.edu.au>
Subject general/10129: "ExtendedStatus On" causes Apache to crash on startup
Date Mon, 11 Mar 2002 13:15:46 GMT

>Number:         10129
>Category:       general
>Synopsis:       "ExtendedStatus On" causes Apache to crash on startup
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon Mar 11 05:20:00 PST 2002
>Originator:     d.begley@uws.edu.au
>Release:        2.0.32
Operating System:
  Sun Solaris 2.7 (SPARC)
  GNU CC (gcc) 2.8.1
Additional Third-Party Apache Modules:
Apache configured/built as per:

$ CC="gcc" ; CFLAGS="-O -pipe -g" ; LDFLAGS="-g" ; export CC CFLAGS LDFLAGS
$ ./configure \
> --disable-shared --enable-so --enable-info --enable-status \
> --enable-dav --enable-dav-fs --enable-expires --enable-rewrite \
> --prefix=/opt/cwis

With "ExtendedStatus On" in httpd.conf, Apache/2.0.28 works but 2.0.32 core
dumps;  error_log reports:

  seg fault or similar nasty error detected in the parent process

Running GDB over the core file reports:

#0  0x6b0dc in ap_update_child_status_from_indexes (child_num=0, thread_num=0,
    status=1, r=0x0) at scoreboard.c:415
415             if (status == SERVER_READY || status == SERVER_DEAD) {
(gdb) backtrace
#0  0x6b0dc in ap_update_child_status_from_indexes (child_num=0, thread_num=0,
    status=1, r=0x0) at scoreboard.c:415
#1  0x5cc78 in make_child (s=0x17d6c0, slot=0) at prefork.c:756
#2  0x5cd90 in startup_children (number_to_start=5) at prefork.c:830
#3  0x5d0c0 in ap_mpm_run (_pconf=0x5, plog=0x128680, s=0x17d6c0)
    at prefork.c:1021
#4  0x62b1c in main (argc=1562304, argv=0xe8600) at main.c:501

The (for now) work-around is to disable extended status reporting - Apache is
then able to successfully fire-up and start answering queries.

Basic Apache compilation/configuration information:

# ./httpd -V
Server version: Apache/2.0.32
Server built:   Mar 11 2002 23:05:40
Server's Module Magic Number: 20020128:0
Architecture:   32-bit
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D HTTPD_ROOT="/opt/cwis"
 -D SUEXEC_BIN="/opt/cwis/bin/suexec"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"

Any additional information required?
No URL necessary - Apache doesn't even manage to start-up in the first place.
As above - the temporary work-around is to disable extended status reporting;
longer-term, however, this is an unacceptable "solution".
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