Hi,
I'm getting segmentation faults with apache child processes. I'm running a
Catalyst application using DBIx::SearchBuilder in the backend to accesss a
mysql database. I'm running this on a debian quad core CPU server with 4
gigs RAM. I enabled core dumping and got a gdb backtrace as follows:
#0 0xb6047590 in mysql_ping () from /usr/lib/libmysqlclient.so.15
No symbol table info available.
#1 0xb61f83ea in XS_DBD__mysql__db_ping () from
/usr/lib/perl5/auto/DBD/mysql/mysql.so
No symbol table info available.
#2 0xb6e10fb6 in XS_DBI_dispatch () from /usr/lib/perl5/auto/DBI/DBI.so
No symbol table info available.
#3 0xb7694975 in Perl_pp_entersub () from /usr/lib/libperl.so.5.10
No symbol table info available.
#4 0xb7692d91 in Perl_runops_standard () from /usr/lib/libperl.so.5.10
No symbol table info available.
#5 0xb768cd08 in Perl_call_sv () from /usr/lib/libperl.so.5.10
No symbol table info available.
#6 0xb775cbfc in modperl_callback () from /usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#7 0xb775d2d3 in modperl_callback_run_handlers () from
/usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#8 0xb775d9ca in modperl_callback_per_dir () from
/usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#9 0xb77566ef in modperl_response_init () from
/usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#10 0xb77568a3 in modperl_response_handler_cgi () from
/usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#11 0x0807a179 in ap_run_handler (r=0x96fe138) at
/tmp/buildd/apache2-2.2.9/server/config.c:159
n = 6
rv = 14
#12 0x0807d591 in ap_invoke_handler (r=0x96fe138) at
/tmp/buildd/apache2-2.2.9/server/config.c:373
handler = 0x9e52b08 "8)�\t�X!\b"
result = 166013704
old_handler = 0xa96a1e0 "perl-script"
ignore = <value optimized out>
#13 0x0808aff6 in ap_process_request (r=0x96fe138) at
/tmp/buildd/apache2-2.2.9/modules/http/http_request.c:258
access_status = 0
#14 0x08088128 in ap_process_http_connection (c=0x9e52b08) at
/tmp/buildd/apache2-2.2.9/modules/http/http_core.c:190
r = (request_rec *) 0x96fe138
csd = (apr_socket_t *) 0x0
#15 0x080815a9 in ap_run_process_connection (c=0x9e52b08) at
/tmp/buildd/apache2-2.2.9/server/connection.c:43
n = 1
rv = 14
#16 0x0808fc0c in child_main (child_num_arg=<value optimized out>) at
/tmp/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:672
pdesc = (const apr_pollfd_t *) 0x9dff018
current_conn = <value optimized out>
csd = (void *) 0x9e52970
ptrans = (apr_pool_t *) 0x9e52938
allocator = (apr_allocator_t *) 0x9720d58
status = <value optimized out>
i = <value optimized out>
lr = <value optimized out>
pollset = (apr_pollset_t *) 0x9dfefa8
sbh = (ap_sb_handle_t *) 0x9dfefa0
bucket_alloc = (apr_bucket_alloc_t *) 0x92a03a0
last_poll_idx = 1
#17 0x0808ff63 in make_child (s=0x80ab908, slot=4) at
/tmp/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:769
No locals.
#18 0x08090d68 in ap_mpm_run (_pconf=0x80a70c8, plog=0x80d9190,
s=0x80ab908) at /tmp/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:904
pidfile = <value optimized out>
active_children = <value optimized out>
cutoff = <value optimized out>
index = <value optimized out>
remaining_children_to_start = 0
rv = <value optimized out>
#19 0x08066f10 in main (argc=Cannot access memory at address 0x0
) at /tmp/buildd/apache2-2.2.9/server/main.c:732
exit_status = 15
c = 68 'D'
configtestonly = 0
confname = 0x8092866 "/etc/apache2/apache2.conf"
def_server_root = 0x809a990 ""
temp_error_log = 0x0
error = <value optimized out>
process = (process_rec *) 0x80a5140
server_conf = (server_rec *) 0x80ab908
pglobal = (apr_pool_t *) 0x80a50c0
pconf = (apr_pool_t *) 0x80a70c8
plog = (apr_pool_t *) 0x80d9190
ptemp = (apr_pool_t *) 0x80e01a8
pcommands = (apr_pool_t *) 0x80a90d0
opt = (apr_getopt_t *) 0x80a9168
rv = <value optimized out>
mod = <value optimized out>
optarg = 0xbfeddf70 "NO_DETACH"
Package versions of relevant packages are:
ii apache2 2.2.9-10
ii apache2-dbg 2.2.9-11
ii apache2-mpm-prefork 2.2.9-11
ii apache2-utils 2.2.3-4+etch6
ii apache2.2-common 2.2.9-11
ii libapache2-mod-auth-pam 1.1.1-6.1
ii libapache2-mod-auth-sys-group 1.1.1-6.1
ii libapache2-mod-fastcgi 2.4.6-1
ii libapache2-mod-perl2 2.0.4-4
ii libapache2-mod-php5 5.2.0-8+etch10
ii libapache2-reload-perl 0.10-2
Output of perl -V:
Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
Platform:
osname=linux, osvers=2.6.26-1-686, archname=i486-linux-gnu-thread-multi
uname='linux rebekka 2.6.26-1-686 #1 smp thu oct 9 15:18:09 utc 2008
i686 gnulinux '
config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN
-Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr
-Dprivlib=/usr/share/perl/5.10 -Darchlib=/usr/lib/perl/5.
10 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5
-Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl/5.10.0 -Dsitearch=/usr/local/lib/perl/5.10.0
-Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3
-Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3
-Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible
-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=-g
-Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.10.0 -Dd_dosuid -des'
hint=recommended, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=undef, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN
-fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64',
optimize='-O2 -g',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing
-pipe -I/usr/local/include'
ccversion='', gccversion='4.3.2', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib /usr/lib64
libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
perllibs=-ldl -lm -lpthread -lc -lcrypt
libc=/lib/libc-2.7.so, so=so, useshrplib=true, libperl=libperl.so.5.10.0
gnulibc_version='2.7'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_ITHREADS
USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API
Built under linux
Compiled at Nov 1 2008 21:31:06
@INC:
/etc/perl
/usr/local/lib/perl/5.10.0
/usr/local/share/perl/5.10.0
/usr/lib/perl5
/usr/share/perl5
/usr/lib/perl/5.10
/usr/share/perl/5.10
/usr/local/lib/site_perl
.
My apache2 configuration file is:
<Perl>
use lib '/usr/local/apps/ttk/lib';
</Perl>
PerlModule tirt
<Location />
SetHandler modperl
PerlResponseHandler tirt
</Location>
Please help me to find a solution. Please ask if you need more information.
--
Thanks and Regards,
Terence Monteiro.
DeepRoot Linux,
http://www.deeproot.in
Ph: +91 (80) 4089 0000
Getting GNU/Linux to work for you. Faster. Better. Today. Every way
