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=347908www-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 suggestionCurrent install. Apache:I downloaded httpd-2.2.16.tar.bz2 and created a working directory at /usr/local/src/httpd-2.2.16I 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 CFLAGSplug httpd-2.2.16 # ./configure --prefix=/var/tmp/apache/httpd --enable-maintainer-modeplug 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 debuggingHow 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
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