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Posted to modperl@perl.apache.org by George Sanderson <ge...@xorgate.com> on 2000/08/10 00:36:37 UTC
Apache 1.3.12/mod_perl 1.24/Perl 5.6.0 crash
I have Apache 1.3.12 using mod_perl 1.24 as a DSO, built with Perl 5.6.0
using Apache::AutoIndex 0.08 which is running on Linux 2.2.14.
Everything works fine, until, I `apachectl stop`, then add the following to
the httpd.conf:
PerlModule Apache::AutoIndex
When I do `bin/httpd -X` Linux does a core dump.
Since I compiled in DEBUG the 'gdb bin/httpd core` reports a segmentation
fault with:
Program received signal SIGSEGV, Segmentation fault.
0x8054b09 in ap_remove_module ()
(gdb) bt
Program received signal SIGSEGV, Segmentation fault.
0x8054b09 in ap_remove_module ()
(gdb) bt
#0 0x8054b09 in ap_remove_module ()
#1 0x8054bdf in ap_remove_loaded_module ()
#2 0x804f2cc in unload_module ()
#3 0x805126e in run_cleanups ()
#4 0x804f910 in ap_clear_pool ()
#5 0x8060683 in standalone_main ()
#6 0x8060f23 in main ()
#7 0x2ab304a5 in __libc_start_main () from /lib/libc.so.6
#8 0x815b0000 in ?? ()
Cannot access memory at address 0xe853.
==============================================================
I don't understand why Apache/mod_perl has to remove a module when it
should be installing it. Maybe its just a confusing naming convention or
something?
Note: that I believe I was careful to clean out old versions before the makes.
I did have to 'not use' "large file support" for the Perl 5.6.0 build in
order to get mod_perl to launch.
Please help! ... and thankyou for any input. (You all do great work!)
Re: Apache 1.3.12/mod_perl 1.24/Perl 5.6.0 crash
Posted by George Sanderson <ge...@xorgate.com>.
At 10:49 PM 8/10/00 +0200, you wrote:
>On Thu, Aug 10, 2000 at 07:39:24AM -0500, George Sanderson wrote:
>> At 12:22 PM 8/10/00 +0200, you wrote:
>> >
>> >with almost the same conf as your, I had a core dump even with httpd
>> >-t. I did a strace, and I noticed this is due to an inexistant module :
>> >Tie::*hash or something similar. A quick search on CPAN give me the
>> >package to install. After that, no more segfault ...
>> >
>> I did a strace and the last entries were:
>>
>> munmap(0x2ae2c000, 9736) = 0
>> --- SIGSEGV (Segmentation fault) ---
>> +++ killed by SIGSEGV +++
>>
>> Could this be a lack of memory?
>
>dunno...
>if you haven't answer on the list, perhaps a more verbose strace trace
>could help...
>
>
>Good luck,
Thanks (I'd rather be lucky than good!-)
Recap:
I have Apache 1.3.12 using mod_perl 1.24 as a DSO, built with Perl 5.6.0
using Apache::AutoIndex 0.08 which is running on Linux 2.2.14.
Everything works fine, until, I `apachectl stop`, then add the following to
the httpd.conf:
PerlModule Apache::AutoIndex
When I do `bin/httpd -X` Linux does a core dump.
I added more memory the computer but the program still crashes at the same
point.
Here's more of a more verbose strace ouput during the core dump.
Any clues?
========================================
open("/usr/local/apache/logs/error_log.test", O_WRONLY|O_APPEND|O_CREAT,
0666) = 4
fcntl(4, F_DUPFD, 15) = 15
close(4) = 0
fcntl(15, F_GETFL) = 0x401 (flags O_WRONLY|O_APPEND)
fstat(15, {st_mode=S_IFREG|0644, st_size=13212, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2aac0000
_llseek(15, 0, [0], SEEK_CUR) = 0
dup2(15, 2) = 2
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
open("/usr/local/apache/conf/apache-mime.types", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=7374, ...}) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=7374, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2aac8000
read(4, "# This is the default mime.types"..., 4096) = 4096
read(4, "m.EXT\napplication/vnd.osa.netdep"..., 4096) = 3278
brk(0x8480000) = 0x8480000
read(4, "", 4096) = 0
close(4) = 0
munmap(0x2aac8000, 4096) = 0
open("/usr/local/apache/logs/access_log.test", O_WRONLY|O_APPEND|O_CREAT,
0644) = 4
fcntl(4, F_DUPFD, 15) = 16
close(4) = 0
getpid() = 1404
time(NULL) = 965956118
close(16) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
munmap(0x2ad9d000, 14288) = 0
munmap(0x2ae0a000, 16308) = 0
munmap(0x2ae0e000, 13712) = 0
munmap(0x2ae12000, 22668) = 0
munmap(0x2ada1000, 9064) = 0
munmap(0x2ae18000, 46408) = 0
munmap(0x2ae24000, 29000) = 0
munmap(0x2ae2c000, 9736) = 0
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
[========================================
I also did a PERL_TRACE of mod_perl. The end of which was:
========================================
5: _compile();
entering CGI::_compile
665: my($func) = $AUTOLOAD;
666: my($pack,$func_name);
667: {
668: local($1,$2); # this fixes an obscure variable
suicide problem.
668: local($1,$2); # this fixes an obscure variable
suicide problem.
669: $func=~/(.+)::([^:]+)$/;
670: ($pack,$func_name) = ($1,$2);
671: $pack=~s/::SUPER$//; # fix another obscure problem
673: unless defined(${"$pack\:\:AUTOLOADED_ROUTINES"});
672: $pack = ${"$pack\:\:AutoloadClass"} ||
$CGI::DefaultClass
675: my($sub) = \%{"$pack\:\:SUBS"};
675: my($sub) = \%{"$pack\:\:SUBS"};
676: unless (%$sub) {
682: my($code) = $sub->{$func_name};
684: $code = "sub $AUTOLOAD { }" if (!$code and
$func_name eq 'DESTROY');
685: if (!$code) {
695: die "Undefined subroutine $AUTOLOAD\n" unless $code;
696: eval "package $pack; $code";
697: if ($@) {
702: CORE::delete($sub->{$func_name}); #free storage
703: return "$pack\:\:$func_name";
exited CGI::_compile
2: foreach (@_) {
exited CGI::AUTOLOAD for CGI::_compile_all
exited CGI::_setup_symbols
exited CGI::compile
46: 1;
3:
entering Config::DESTROY
exited Config::DESTROY
entering IO::Handle::DESTROY
exited IO::Handle::DESTROY
Carp::(/usr/local/lib/perl5/5.6.0/Carp.pm:97):
97: { local $@; require Carp::Heavy; } # XXX fix require to not
clear $@?
Carp::(/usr/local/lib/perl5/5.6.0/Carp.pm:97):
97: { local $@; require Carp::Heavy; } # XXX fix require to not
clear $@?
Carp::(/usr/local/lib/perl5/5.6.0/Carp.pm:97):
97: { local $@; require Carp::Heavy; } # XXX fix require to not
clear $@?
Carp::(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:253):
253: 1;
Carp::(/usr/local/lib/perl5/5.6.0/Carp.pm:98):
98: goto &longmess_heavy;
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:30):
30: return @_ if ref $_[0];
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:31):
31: my $error = join '', @_;
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:32):
32: my $mess = "";
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:33):
33: my $i = 1 + $CarpLevel;
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:34):
34: my ($pack,$file,$line,$sub,$hargs,$eval,$require);
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:35):
35: my (@a);
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:39):
39: while (do { { package DB; @a = caller($i++) } } ) {
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:39):
39: while (do { { package DB; @a = caller($i++) } } ) {
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:125):
125: my $msg = \($mess || $error);
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:126):
126: $$msg =~ tr/\0//d;
Carp::longmess_heavy(/usr/local/lib/perl5/5.6.0/Carp/Heavy.pm:127):
127: $$msg;
========================================
Any help would be appreciated.