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in reply to Debugging child pid 4577 exit signal Segmentation fault (11)

How do you know its a perl child?

notice child pid 4577 exit signal Segmentation fault -> http://www.question-defense.com/2009/07/15/apache-notice-child-pid-27609-exit-signal-segmentation-fault-11

it says setup apache feature CoreDumpDirectory and investigate from there

  • Comment on Re: Debugging child pid 4577 exit signal Segmentation fault (11)

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Re^2: Debugging child pid 4577 exit signal Segmentation fault (11)
by keenlearner (Acolyte) on Sep 30, 2012 at 14:20 UTC

    Hi,

    I don't know if it's a perl child.

    I have followed the apache core dump instruction from http://httpd.apache.org/dev/debugging.html#crashes

    I got the core dump

    dell:~ # gdb httpd2 /tmp/apache-cores/core 

        (gdb) bt full 
#0 0x00007f43f5131320 in apr_palloc () from
    /usr/lib64/libapr-1.so.0 No symbol table info available. #1
    0x00007f43f5129713 in apr_table_make () from
    /usr/lib64/libapr-1.so.0 No symbol table info available. #2
    0x00007f43f5a173bd in ap_scan_script_header_err_core () No symbol
    table info available. #3 0x00007f43f5a1795e in
    ap_scan_script_header_err_strs () No symbol table info available. 
+#4
    0x00007f43f002479a in modperl_cgi_header_parse () from
    /usr/lib64/apache2/mod_perl.so No symbol table info available. #5
    0x00007f43ee639683 in XS_Apache2__RequestRec_send_cgi_header () fr
+om
    /usr/lib/perl5/vendor_perl/5.14.2/x86_64-linux-thread-multi/auto/A
+pache2/Response/Response.so
    No symbol table info available. #6 0x00007f43efd3bc8f in
    Perl_pp_entersub () from
    /usr/lib/perl5/5.14.2/x86_64-linux-thread-multi/CORE/libperl.so No
    symbol table info available. #7 0x00007f43efd33126 in
    Perl_runops_standard () from
    /usr/lib/perl5/5.14.2/x86_64-linux-thread-multi/CORE/libperl.so No
    symbol table info available. #8 0x00007f43efcceede in Perl_call_sv
    () from
    /usr/lib/perl5/5.14.2/x86_64-linux-thread-multi/CORE/libperl.so No
    symbol table info available. #9 0x00007f43f0019725 in
    modperl_callback () from /usr/lib64/apache2/mod_perl.so No symbol
    table info available. #10 0x00007f43f0019f5c in
    modperl_callback_run_handlers () from /usr/lib64/apache2/mod_perl.
+so
    No symbol table info available. #11 0x00007f43f001a49f in
    modperl_callback_per_dir () from /usr/lib64/apache2/mod_perl.so No
    symbol table info available. #12 0x00007f43f001490b in ?? () from
    /usr/lib64/apache2/mod_perl.so No symbol table info available. #13
    0x00007f43f0014a82 in modperl_response_handler_cgi () from
    /usr/lib64/apache2/mod_perl.so No symbol table info available. #14
    0x00007f43f5a11a88 in ap_run_handler () No symbol table info
    available. #15 0x00007f43f5a11f0e in ap_invoke_handler () No symbo
+l
    table info available. #16 0x00007f43f5a1f7a0 in ap_process_request
    () No symbol table info available. #17 0x00007f43f5a1c5d8 in ?? ()
    No symbol table info available. #18 0x00007f43f5a18518 in
    ap_run_process_connection () No symbol table info available. #19
    0x00007f43f5a24340 in ?? () No symbol table info available. #20
    0x00007f43f5a24aaa in ?? () No symbol table info available. #21
    0x00007f43f5a24b67 in ?? () No symbol table info available. #22
    0x00007f43f5a254e4 in ap_mpm_run () No symbol table info available
+.
    #23 0x00007f43f59fc9aa in main () No symbol table info available.
    (gdb)

    [download]

    But I still have no clue on what's wrong from the message, anyway to have a more clear one ? Thanks

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