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Bug #17113 Apache 2.0 restart gives segmentation fault
Submitted: 2002-05-09 06:33 UTC Modified: 2002-05-09 17:10 UTC
From: japs at adm dot ku dot dk Assigned:
Status: Closed Package: Apache2 related
PHP Version: 4.2.0 OS: Linux Mandrake 8.2
Private report: No CVE-ID: None
 [2002-05-09 06:33 UTC] japs at adm dot ku dot dk
PHP 4.2 CVS version from may 9. and Apache 2.0.36
may be started correctly by the command: "bin/apachectl start" 

However after a "bin/apachectl restart" the Webserver crashes:

[Thu May 09 10:52:42 2002] [notice] Apache/2.0.36 (Unix) PHP/4.3.0-dev configured -- resuming normal operations
[Thu May 09 10:53:30 2002] [notice] SIGHUP received.  Attempting to restart
[Thu May 09 10:53:31 2002] [notice] seg fault or similar nasty error detected in the parent process
[Thu May 09 10:54:56 2002] [warn] pid file /usr/local/apache2/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Thu May 09 10:54:56 2002] [notice] Apache/2.0.36 (Unix) PHP/4.3.0-dev configured -- resuming normal operations

A full stop and start of Apache will circumvent the problem.

Apache:   ./configure --enable-proxy
PHP:  ./configure --with-apxs2=../httpd-2.0.36/support/apxs 
       --enable-track-vars --with-mysql  

The restart works correctly when the "modules/libphp4.so" is removed fra the httpd.conf

This is a follow up to report #16475 where SSL was included.

Jan P. Sorensen

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 [2002-05-09 06:39 UTC] sander@php.net
To properly diagnose this bug, we need a backtrace to see what is
happening behind the scenes. To find out how to generate a backtrace,
please read http://bugs.php.net/bugs-generating-backtrace.php

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open".
 [2002-05-09 15:50 UTC] japs at adm dot ku dot dk
I fail to get a usefull core dump.

I tried "httpd -X" and "kill -HUP pid" from another terminal. I also tried "gdb ./httpd", "run -X" and "bt"
The result is probably useless, since I get the same result with and without the PHP4 module.

Program received signal SIGHUP, Hangup.
[Switching to Thread 1024 (LWP 25947)]
0x401d20b2 in accept () from /lib/libc.so.6
(gdb) bt
#0  0x401d20b2 in accept () from /lib/libc.so.6
#1  0x400db646 in accept (fd=5, addr=
      {__sockaddr__ = 0x817cc24, __sockaddr_at__ = 0x817cc24, __sockaddr_ax25__ = 0x817cc24, __sockaddr_dl__ = 0x817cc24, __sockaddr_eon__ = 0x817cc24, __sockaddr_in__ = 0x817cc24, __sockaddr_in6__ = 0x817cc24, __sockaddr_inarp__ = 0x817cc24, __sockaddr_ipx__ = 0x817cc24, __sockaddr_iso__ = 0x817cc24, __sockaddr_ns__ = 0x817cc24, __sockaddr_un__ = 0x817cc24, __sockaddr_x25__ = 0x817cc24}, addr_len=0x817cc40)
    at wrapsyscall.c:187
#2  0x400381b6 in apr_accept (new=0xbffff8b0, sock=0x80b9340, 
    connection_context=0x817cb60) at sockets.c:189
#3  0x080969f4 in unixd_accept (accepted=0xbffff8e0, lr=0x817ab98, 
    ptrans=0x817cb60) at unixd.c:425
#4  0x0807fa91 in child_main (child_num_arg=0) at prefork.c:651
#5  0x0807fb9f in make_child (s=0x81477e0, slot=0) at prefork.c:711
#6  0x0807fc8d in startup_children (number_to_start=5) at prefork.c:783
#7  0x0807ff9d in ap_mpm_run (_pconf=0x80bb020, plog=0x80f7110, s=0x81477e0)
    at prefork.c:999
#8  0x080850c7 in main (argc=2, argv=0xbffffa74) at main.c:632
#9  0x400fe280 in __libc_start_main () from /lib/libc.so.6

Jan P. Sorensen
 [2002-05-09 17:10 UTC] jwoolley@php.net
This bug has been fixed in CVS. You can grab a snapshot of the
CVS version at http://snaps.php.net/. In case this was a documentation 
problem, the fix will show up soon at http://www.php.net/manual/. 
Thank you for the report.

This is fixed in CVS, I believe.  Thanks! 
 [2002-05-10 11:19 UTC] japs at adm dot ku dot dk
I tried CVS from may 10. It did not solve the restart
problem.

Jan P. Sorensen
 [2002-05-16 06:40 UTC] japs at adm dot ku dot dk
Not yet solved in 4.2.1

Jan P. Sorensen
 
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