Terence Monteiro wrote: > 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. >
Enabled apache2 modules (ls -1 /etc/apache2/mods-enabled): actions.conf actions.load alias.conf alias.load auth_basic.load authn_file.load auth_pam.load authz_default.load authz_groupfile.load authz_host.load authz_user.load autoindex.conf autoindex.load cache.load cgi.load dir.conf dir.load env.load fastcgi.conf fastcgi.load mime.conf mime.load negotiation.conf negotiation.load perl.load php5.conf php5.load proxy.conf proxy_connect.load proxy_http.load proxy.load rewrite.load ssl.conf ssl.load status.conf status.load -- 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
