From dev-return-23681-apmail-apr-dev-archive=apr.apache.org@apr.apache.org Sun Jan 16 15:30:54 2011 Return-Path: Delivered-To: apmail-apr-dev-archive@www.apache.org Received: (qmail 16709 invoked from network); 16 Jan 2011 15:30:54 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 16 Jan 2011 15:30:54 -0000 Received: (qmail 94616 invoked by uid 500); 16 Jan 2011 15:30:53 -0000 Delivered-To: apmail-apr-dev-archive@apr.apache.org Received: (qmail 94212 invoked by uid 500); 16 Jan 2011 15:30:50 -0000 Mailing-List: contact dev-help@apr.apache.org; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Id: Delivered-To: mailing list dev@apr.apache.org Received: (qmail 94204 invoked by uid 99); 16 Jan 2011 15:30:50 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 16 Jan 2011 15:30:50 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of jlpoole56@gmail.com designates 209.85.210.50 as permitted sender) Received: from [209.85.210.50] (HELO mail-pz0-f50.google.com) (209.85.210.50) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 16 Jan 2011 15:30:49 +0000 Received: by pzk27 with SMTP id 27so854541pzk.37 for ; Sun, 16 Jan 2011 07:30:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:reply-to:user-agent :mime-version:to:cc:subject:references:in-reply-to:content-type; bh=Q+aco554uuaqfOHV/E7MY5q+gw5741uVeQz0M3FT93Y=; b=NictJ4kBrVBhcacpTxdonqP11V8udK5v2iL1uMYkZLiHnqtNw6fmYeVZz9/deZg8wa ydOnnxRQmXRMOZS3tsn3rke9yXwCgBIaJPlbKvuC38/XGMCyWtk1O4y5uITbQXrL3Ze2 qtdLJnj3kb5OK5z14XcVyAiujpXSO2vRqalOE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:reply-to:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type; b=x7KnBcJfKM3CuupcJzKTYAuMQO1Yqdv8g1Co2DMLBt9YC29KIhkfwNfuXu3Fm+iG0h mF8R/bJOALZwB+U0zSPQnRirhG5Epzy3WVt7dzRkkjRexTLSxCIBbQ8BJTcTXXVYChR3 6rKfPGcs8yGRFYPOB9cDvXAvubTB2qqvIo5uI= Received: by 10.142.47.2 with SMTP id u2mr2629940wfu.63.1295191828366; Sun, 16 Jan 2011 07:30:28 -0800 (PST) Received: from [192.168.168.2] (70-36-204-192.dsl.static.sonic.net [70.36.204.192]) by mx.google.com with ESMTPS id e14sm5105214wfg.8.2011.01.16.07.30.24 (version=SSLv3 cipher=RC4-MD5); Sun, 16 Jan 2011 07:30:25 -0800 (PST) Message-ID: <4D330F11.3030301@gmail.com> Date: Sun, 16 Jan 2011 07:30:25 -0800 From: "John L. Poole" Reply-To: jlpoole56@gmail.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 MIME-Version: 1.0 To: Sander Temme CC: dev@apr.apache.org Subject: Re: testprocmutex hangs References: <4D062CEE.8000508@gmail.com> <14D184AA-4BE7-4C7B-83F9-852586D6CB0D@temme.net> <4D120916.7080804@gmail.com> <01978FE8-1D9C-43F9-94E7-A45258774E92@temme.net> <4D31E57E.9010904@gmail.com> In-Reply-To: <4D31E57E.9010904@gmail.com> Content-Type: multipart/mixed; boundary="------------080001090809060902070509" This is a multi-part message in MIME format. --------------080001090809060902070509 Content-Type: multipart/alternative; boundary="------------030005020203000706020608" --------------030005020203000706020608 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit My problem appears to be resolved, though I do not know why. I ended up rebuilding apr and apr-utils using Gentoo's portage system, after that, my apache server no longer segment faulted. Here's what was updated: [I] dev-libs/apr Available versions: (1) 1.3.9!t 1.4.2!t {doc older-kernels-compatibility +urandom} Installed versions: 1.4.2(1)!t(07:01:50 AM 01/16/2011)(urandom -doc -older-kernels-compatibility) Homepage: http://apr.apache.org/ Description: Apache Portable Runtime Library [I] dev-libs/apr-util Available versions: (1) 1.3.9!t ~1.3.9-r1!t 1.3.10!t {berkdb doc freetds gdbm ldap mysql odbc postgres sqlite sqlite3} Installed versions: 1.3.10(1)!t(07:09:20 AM 01/16/2011)(berkdb gdbm ldap mysql postgres -doc -freetds -odbc -sqlite -sqlite3) Homepage: http://apr.apache.org/ Description: Apache Portable Runtime Utility Library What is new is that the apr-util was new. The apr was simply a recompile. I'll consider this matter closed and resolved, unless there is something more someone would like me to try in the test instances I created to further shed light on what was causing the problem. On 1/15/2011 10:20 AM, John L. Poole wrote: > Hi Sander, > > Dismayed, I needed to take a break from the fact that Apache on my ARM > (SheevaPlug) rapidly dies with a segmentation fault provided little > trail with which to debug. > > Background: > Here are the bugs I filed in Gentoo which simply further document the > problem I experienced. > > https://bugs.gentoo.org/show_bug.cgi?id=347910 > www-servers/apache-2.2.16 builds then Segmentation faults at start up > I'm the only commentator > > https://bugs.gentoo.org/show_bug.cgi?id=347908 > www-apache/libapreq2-2.12 fails to build: configure: error: Bad > apache2 binary (/usr/sbin/apache2) > I'm basically the only commentator (fixed an ommission) > > I then posted to this mailing list on 12/13/2010. > > The last suggestion was Sander's, so here is what I did. I'm not > quite sure how I should execute the "on top" part of your suggestion > > Current install. > > Apache: > I downloaded httpd-2.2.16.tar.bz2 and created a working directory at > /usr/local/src/httpd-2.2.16 > I created an output working area: /var/tmp/apache/httpd > > Within /usr/local/src/httpd-2.2.16 I did the following: > > plug httpd-2.2.16 # CFLAGS="-DDEBUG -O0"; export CFLAGS > plug httpd-2.2.16 # ./configure --prefix=/var/tmp/apache/httpd > --enable-maintainer-mode > plug httpd-2.2.16 # make > plug httpd-2.2.16 # make install > plug httpd-2.2.16 # cd /var/tmp/apache/httpd/bin > > plug httpd-2.2.16 # gdb httpd > GNU gdb (Gentoo 7.0.1 p1) 7.0.1 > Copyright (C) 2009 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later > > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show > copying" > and "show warranty" for details. > This GDB was configured as "armv5tel-softfloat-linux-gnueabi". > For bug reporting instructions, please see: > ... > Reading symbols from /usr/local/src/httpd-2.2.16/httpd...(no > debugging symbols found)...done. > warning: not using untrusted file > "/usr/local/src/httpd-2.2.16/.gdbinit" > (gdb) run -X > Starting program: /usr/local/src/httpd-2.2.16/httpd -X > [Thread debugging using libthread_db enabled] > > Program received signal SIGSEGV, Segmentation fault. > 0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0 > (gdb)) bt > #0 0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0 > #1 0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0 > #2 0x400ddb54 in apr_hook_sort_register () from > /usr/lib/libaprutil-1.so.0 > #3 0x00051f74 in ap_hook_create_connection () > #4 0x0003f838 in register_hooks () > #5 0x000485e4 in ap_register_hooks () > #6 0x00048974 in ap_add_module () > #7 0x00048d64 in ap_setup_prelinked_modules () > #8 0x00028be0 in main () > (gdb) quit > ... > > plug httpd-2.2.16 # gdb httpd > GNU gdb (Gentoo 7.0.1 p1) 7.0.1 > Copyright (C) 2009 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later > > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show > copying" > and "show warranty" for details. > This GDB was configured as "armv5tel-softfloat-linux-gnueabi". > For bug reporting instructions, please see: > ... > Reading symbols from /usr/local/src/httpd-2.2.16/httpd...(no > debugging symbols found)...done. > warning: not using untrusted file > "/usr/local/src/httpd-2.2.16/.gdbinit" > (gdb) run > Starting program: /usr/local/src/httpd-2.2.16/httpd > [Thread debugging using libthread_db enabled] > > Program received signal SIGSEGV, Segmentation fault. > 0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0 > (gdb) bt > #0 0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0 > #1 0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0 > #2 0x400ddb54 in apr_hook_sort_register () from > /usr/lib/libaprutil-1.so.0 > #3 0x00051f74 in ap_hook_create_connection () > #4 0x0003f838 in register_hooks () > #5 0x000485e4 in ap_register_hooks () > #6 0x00048974 in ap_add_module () > #7 0x00048d64 in ap_setup_prelinked_modules () > #8 0x00028be0 in main () > (gdb) > > APR: > I have apr-1.4.2 downloaded, but am not sure how to install it so > that my custom install of apache at /var/tmp/apache utilizes it. > > plug apr-1.4.2 #make clean > plug apr-1.4.2 # ... > plug apr-1.4.2 # echo $CFLAGS > -DDEBUG -O0 > plug apr-1.4.2 # ./configure --enable-maintainer-mode > plug apr-1.4.2 # make > > The output from ./configure, make,make install, and gdb are posted at: > > http://snipt.org/wknpm > > For convenience, here is the back trace: > > #0 0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0 > #1 0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0 > #2 0x400ddb54 in apr_hook_sort_register () from > /usr/lib/libaprutil-1.so.0 > #3 0x00051f74 in ap_hook_create_connection () > #4 0x0003f838 in register_hooks () > #5 0x000485e4 in ap_register_hooks () > #6 0x00048974 in ap_add_module () > #7 0x00048d64 in ap_setup_prelinked_modules () > #8 0x00028be0 in main () > > Please let me know if there is any other compile or debug step I > should take to create something helpful to identify the problem. > > Thank you for you help, > > John > > > > On 12/22/2010 7:57 AM, Sander Temme wrote: >> On Dec 22, 2010, at 6:20 AM, John L. Poole wrote: >> >>> Am I missing something, as the output above seems the same as when I did not have debugging >> How are you making Apache use your new library? I suggest compiling your own Apache on top of your own APR/APR-Util, and debugging against that. >> >> In the system build, something is clearly happening that horribly confuses the debugger. >> >> S. >> > > -- > > John Laurence Poole > P.O. Box 6566 > Napa CA 94581-6566 > 707-812-1323 office > -- John Laurence Poole P.O. Box 6566 Napa CA 94581-6566 707-812-1323 office --------------030005020203000706020608 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit My problem appears to be resolved, though I do not know why.

I ended up rebuilding apr and apr-utils using Gentoo's portage system, after that, my apache server no longer segment faulted.

Here's what was updated:
[I] dev-libs/apr
     Available versions:  (1) 1.3.9!t 1.4.2!t
        {doc older-kernels-compatibility +urandom}
     Installed versions:  1.4.2(1)!t(07:01:50 AM 01/16/2011)(urandom -doc -older-kernels-compatibility)
     Homepage:            http://apr.apache.org/
     Description:         Apache Portable Runtime Library

[I] dev-libs/apr-util
     Available versions:  (1) 1.3.9!t ~1.3.9-r1!t 1.3.10!t
        {berkdb doc freetds gdbm ldap mysql odbc postgres sqlite sqlite3}
     Installed versions:  1.3.10(1)!t(07:09:20 AM 01/16/2011)(berkdb gdbm ldap mysql postgres -doc -freetds -odbc -sqlite -sqlite3)
     Homepage:            http://apr.apache.org/
     Description:         Apache Portable Runtime Utility Library

What is new is that the apr-util was new.  The apr was simply a recompile.  I'll consider this matter closed and resolved, unless there is something more someone would like me to try in the test instances I created to further shed light on what was causing the problem.

On 1/15/2011 10:20 AM, John L. Poole wrote:
Hi Sander,

Dismayed, I needed to take a break from the fact that Apache on my ARM (SheevaPlug) rapidly dies with a segmentation fault provided little trail with which to debug. 

Background:
Here are the bugs I filed in Gentoo which simply further document the problem I experienced.

https://bugs.gentoo.org/show_bug.cgi?id=347910
www-servers/apache-2.2.16 builds then Segmentation faults at start up
I'm the only commentator

https://bugs.gentoo.org/show_bug.cgi?id=347908
www-apache/libapreq2-2.12 fails to build: configure: error: Bad apache2 binary (/usr/sbin/apache2)
I'm basically the only commentator (fixed an ommission)

I then posted to this mailing list on 12/13/2010.

The last suggestion was Sander's, so here is what I did.  I'm not quite sure how I should execute the "on top" part of your suggestion

Current install.

Apache:
I downloaded  httpd-2.2.16.tar.bz2 and created a working directory at /usr/local/src/httpd-2.2.16
I created an output working area: /var/tmp/apache/httpd

Within /usr/local/src/httpd-2.2.16  I did the following:

    plug httpd-2.2.16 # CFLAGS="-DDEBUG -O0"; export CFLAGS
    plug httpd-2.2.16 # ./configure --prefix=/var/tmp/apache/httpd --enable-maintainer-mode
    plug httpd-2.2.16 # make
    plug httpd-2.2.16 # make install
    plug httpd-2.2.16 # cd /var/tmp/apache/httpd/bin

    plug httpd-2.2.16 # gdb httpd
    GNU gdb (Gentoo 7.0.1 p1) 7.0.1
    Copyright (C) 2009 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
    and "show warranty" for details.
    This GDB was configured as "armv5tel-softfloat-linux-gnueabi".
    For bug reporting instructions, please see:
    <http://bugs.gentoo.org/>...
    Reading symbols from /usr/local/src/httpd-2.2.16/httpd...(no debugging symbols found)...done.
    warning: not using untrusted file "/usr/local/src/httpd-2.2.16/.gdbinit"
    (gdb) run -X
    Starting program: /usr/local/src/httpd-2.2.16/httpd -X
    [Thread debugging using libthread_db enabled]

    Program received signal SIGSEGV, Segmentation fault.
    0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0
    (gdb)) bt
    #0  0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0
    #1  0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0
    #2  0x400ddb54 in apr_hook_sort_register () from /usr/lib/libaprutil-1.so.0
    #3  0x00051f74 in ap_hook_create_connection ()
    #4  0x0003f838 in register_hooks ()
    #5  0x000485e4 in ap_register_hooks ()
    #6  0x00048974 in ap_add_module ()
    #7  0x00048d64 in ap_setup_prelinked_modules ()
    #8  0x00028be0 in main ()
    (gdb) quit
    ...
   
    plug httpd-2.2.16 # gdb httpd
    GNU gdb (Gentoo 7.0.1 p1) 7.0.1
    Copyright (C) 2009 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
    and "show warranty" for details.
    This GDB was configured as "armv5tel-softfloat-linux-gnueabi".
    For bug reporting instructions, please see:
    <http://bugs.gentoo.org/>...
    Reading symbols from /usr/local/src/httpd-2.2.16/httpd...(no debugging symbols found)...done.
    warning: not using untrusted file "/usr/local/src/httpd-2.2.16/.gdbinit"
    (gdb) run
    Starting program: /usr/local/src/httpd-2.2.16/httpd
    [Thread debugging using libthread_db enabled]

    Program received signal SIGSEGV, Segmentation fault.
    0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0
    (gdb) bt
    #0  0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0
    #1  0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0
    #2  0x400ddb54 in apr_hook_sort_register () from /usr/lib/libaprutil-1.so.0
    #3  0x00051f74 in ap_hook_create_connection ()
    #4  0x0003f838 in register_hooks ()
    #5  0x000485e4 in ap_register_hooks ()
    #6  0x00048974 in ap_add_module ()
    #7  0x00048d64 in ap_setup_prelinked_modules ()
    #8  0x00028be0 in main ()
    (gdb)

APR:
I have apr-1.4.2  downloaded, but am not sure how to install it so that my custom install of apache at /var/tmp/apache utilizes it.

plug apr-1.4.2 #make clean
plug apr-1.4.2 # ...
plug apr-1.4.2 # echo $CFLAGS
-DDEBUG -O0
plug apr-1.4.2 # ./configure --enable-maintainer-mode
plug apr-1.4.2 # make

The output from ./configure, make,make install, and gdb are posted at:

http://snipt.org/wknpm

For convenience, here is the back trace:

#0  0x402600e4 in apr_palloc () from /usr/lib/libapr-1.so.0
#1  0x4025a988 in apr_array_make () from /usr/lib/libapr-1.so.0
#2  0x400ddb54 in apr_hook_sort_register () from /usr/lib/libaprutil-1.so.0
#3  0x00051f74 in ap_hook_create_connection ()
#4  0x0003f838 in register_hooks ()
#5  0x000485e4 in ap_register_hooks ()
#6  0x00048974 in ap_add_module ()
#7  0x00048d64 in ap_setup_prelinked_modules ()
#8  0x00028be0 in main ()

Please let me know if there is any other compile or debug step I should take to create something helpful to identify the problem. 

Thank you for you help,

John



On 12/22/2010 7:57 AM, Sander Temme wrote: 
On Dec 22, 2010, at 6:20 AM, John L. Poole wrote:


Am I missing something, as the output above seems the same as when I did not have debugging

How are you making Apache use your new library?  I suggest compiling your own Apache on top of your own APR/APR-Util, and debugging against that. 

In the system build, something is clearly happening that horribly confuses the debugger. 

S.

--
Email Rider

John Laurence Poole
P.O. Box 6566
Napa CA 94581-6566
707-812-1323 office


--
Email Rider

John Laurence Poole
P.O. Box 6566
Napa CA 94581-6566
707-812-1323 office

--------------030005020203000706020608-- --------------080001090809060902070509 Content-Type: text/x-vcard; charset=utf-8; name="jlpoole56.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="jlpoole56.vcf" begin:vcard fn:John Poole n:Poole;John adr:;;P.O. Box 6566;Napa;CA;94581-6566;USA email;internet:jlpoole56@gmail.net tel;work:650-607-0853 tel;home:707-812-1323 note:For street address, email me. version:2.1 end:vcard --------------080001090809060902070509--