Pavel Hlavnicka wrote:
Hi all,Your trace is not as useful as it could be, because it neither shows the arguments nor the line numbers in the source code. I suggest to debug it with gdb, set breakpoint in perl_cmd_handler_handlers and step through to see what's wrong. If you don't know how to debug see:
recently I upgraded to RH 8.0 with threaded Perl 5.8. I compiled Apache 1.3.27 with mod_perl 1.27 from source.
Now if I run Apache is works until I configure some location with mod_perl and PerlHandler like this:
<Location /perl>
SetHandler perl-script
PerlHandler Apache::Registry
Options ExecCGI
allow from all
</Location>
If PerlHandler line is commented out, the server starts fine.
Here is the backtrace of 'httpd -X'
#0 0x4003cfa0 in Perl_gv_fetchpv ()
from /usr/lib/perl5/5.8.0/i386-linux-thread-multi/CORE/libperl.so
#1 0x40035635 in Perl_get_sv ()
from /usr/lib/perl5/5.8.0/i386-linux-thread-multi/CORE/libperl.so
#2 0x08056b78 in mp_preload_module ()
#3 0x08056e32 in perl_cmd_handler_handlers ()
#4 0x08078a35 in invoke_cmd ()
#5 0x08078e3b in ap_handle_command ()
#6 0x08078ec2 in ap_srm_command_loop ()
#7 0x0807c6a8 in urlsection ()
#8 0x080783ef in invoke_cmd ()
#9 0x08078e3b in ap_handle_command ()
#10 0x08078ec2 in ap_srm_command_loop ()
#11 0x0807ceb3 in virtualhost_section ()
#12 0x080783ef in invoke_cmd ()
#13 0x08078e3b in ap_handle_command ()
#14 0x08078ec2 in ap_srm_command_loop ()
#15 0x08079651 in ap_process_resource_config ()
#16 0x08079f2f in ap_read_config ()
#17 0x0808466c in main ()
#18 0x420158d4 in __libc_start_main () from /lib/i686/libc.so.6
Has anyone seen it before?
and... here is what my perl says:
This is perl, v5.8.0 built for i386-linux-thread-multi
Many thanks in advance, and sorry if I overlooked something basic.
http://perl.apache.org/docs/1.0/guide/debug.html#Debugging_when_Server_Crashes_on_Startup_before_Writing_to_Log_File_
and previous sections as well, though you don't need Apache::DB since the problem doesn't happen during the request.
p.s. What app did you get this trace with? It'd be helpful to update the bug reporting section to explain how to get a more useful trace. The one that includes symbols, arguments and line numbers.
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Stas Bekman JAm_pH ------> Just Another mod_perl Hacker
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