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Posted to modperl@perl.apache.org by Phil Lobbes <ph...@perkpartners.com> on 2002/08/28 04:55:49 UTC
[mp-1.99_05] segfault modperl_pcw.c:52 ap_pcw_walk_files_config dconf->sec_file is NULL
Hi,
I just recently joined the mail list and did a quick check but didn't
seen any report of this problem:
Versions: perl-5.6.1 (non-threaded)
apache-2.0.40 (mpm-prefork)
mod_perl-1.99_05
OS: HPUX 11
Compiler: gcc version 3.2 20020708 (experimental)
I don't know the code well enough to know what data/values are
expected to be found in dconf, but here is a possible work around
(most likely less than ideal solution) in the affected portion of C
code (src/modules/perl/modperl_pcw.c):
+ if( (! dconf) || (! dconf->sec_file) )
+ return;
ap_conf_vector_t **dirs = (ap_conf_vector_t **)dconf->sec_file->elts;
However after doing that, I get problems in other places... back to
the drawing board I guess.
For your reference, here is how I built mod_perl:
/opt/perl/bin/perl Makefile.PL MP_INST_APACHE2=1 \
MP_AP_PREFIX=/opt/apache2/2.0.40_debug \
MP_DEBUG=1 MP_TRACE=1
gdb /opt/apache2/2.0.40_debug/bin/httpd -core ... (wd: ~/sw/src/apache/mod_perl-1.99_05)
where
#0 0xda26ffa8 in ap_pcw_walk_files_config (pconf=0x400292b0, s=0x4002c020,
dconf=0x400667f0, modp=0x7f68b7e8,
dir_cb=0x7f685122 <modperl_hash_handlers_dir>, data=0x0)
at modperl_pcw.c:52
#1 0xda2703ec in ap_pcw_walk_config (pconf=0x400292b0, s=0x4002c020,
modp=0x7f68b7e8, data=0x0, dir_cb=0x7f685122 <modperl_hash_handlers_dir>,
srv_cb=0x7f68512a <modperl_hash_handlers_srv>) at modperl_pcw.c:106
#2 0xda26f514 in modperl_mgv_hash_handlers (p=0x400292b0, s=0x4002c020)
at modperl_mgv.c:470
#3 0xda259948 in modperl_hook_post_config (pconf=0x400292b0, plog=0x40061470,
ptemp=0x40063480, s=0x4002c020) at mod_perl.c:415
#4 0x60874 in ap_run_post_config (pconf=0x400292b0, plog=0x40061470,
ptemp=0x40063480, s=0x4002c020) at config.c:130
#5 0x67cd0 in main (argc=6, argv=0x7f7f05a4) at main.c:592
(gdb) print *pconf
$5 = {parent = 0x400272a0, child = 0x400cfcc8, sibling = 0x0,
ref = 0x4005f468, cleanups = 0x400a2578, allocator = 0x400231f0,
subprocesses = 0x0, abort_fn = 0, user_data = 0x0, tag = 0x4000a6b0 "pconf",
active = 0x400a1b40, self = 0x40029298,
self_first_avail = 0x400292e8 "@\002\222\260"}
(gdb) print *dconf
$6 = {d = 0x0, d_components = 0, opts = 31 '\037', opts_add = 0 '\000',
opts_remove = 0 '\000', override = 63 '?', ap_default_type = 0x0,
satisfy = 2, ap_auth_type = 0x0, ap_auth_name = 0x0, ap_requires = 0x0,
response_code_strings = 0x0, hostname_lookups = 0, do_rfc1413 = -2,
content_md5 = -2, use_canonical_name = 3, d_is_fnmatch = 0,
add_default_charset = 2, add_default_charset_name = 0x4000c848 "iso-8859-1",
limit_cpu = 0x0, limit_mem = 0x0, limit_req_body = -4294967296,
limit_xml_body = 0, server_signature = 1074161768, loglevel = 0,
sec_file = 0x0, r = 0x0, mime_type = 0x0, handler = 0x0,
output_filters = 0x3 "", input_filters = 0x0, accept_path_info = 0,
ct_output_filters = 0x0, etag_bits = 0, etag_add = 2, etag_remove = 0,
enable_mmap = 1073910448}
(gdb)
Perl version info (perl -V):
[apr/include] perk@hpmx5(2203)> /opt/perl/bin/perl -V
Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:
Platform:
osname=hpux, osvers=11.00, archname=PA-RISC2.0
uname='hp-ux hpmx5 b.11.00 a 9000800 1534710528 two-user license '
config_args='-Dcf_by=Openwave -Dcf_email=support@openwave.com -Dcc=gcc -Dprefix=/opt/perl -Uusethreads -Ubincompat5005 -Uinstallusrbinperl -Uusemymalloc -Duselargefiles -A prepend:libswanted=cl pthread $a -A ccflags=-fPIC -D_POSIX_C_SOURCE=199506L -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Doptimize=-g -de'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
useperlio=undef d_sfio=undef uselargefiles=undef usesocks=undef
use64bitint=undef use64bitall=undef uselongdouble=undef
Compiler:
cc='gcc', ccflags ='-D_HPUX_SOURCE -L/lib/pa1.1 -DUINT32_MAX_BROKEN -fPIC -D_POSIX_C_SOURCE=199506L -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DDEBUGGING -fno-strict-aliasing -I/usr/local/include',
optimize='-g',
cppflags='-D_HPUX_SOURCE -L/lib/pa1.1 -DUINT32_MAX_BROKEN -fPIC -D_POSIX_C_SOURCE=199506L -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DDEBUGGING -fno-strict-aliasing -I/usr/local/include'
ccversion='', gccversion='3.2 20020708 (experimental)', gccosandvers='hpux11.00'
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=8, usemymalloc=n, prototype=define
Linker and Libraries:
ld='ld', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib /usr/ccs/lib
libs=-lcl -lpthread -lnsl -lnm -lndbm -lmalloc -ldld -lm -lc -lndir -lcrypt -lsec
perllibs=-lcl -lpthread -lnsl -lnm -lmalloc -ldld -lm -lc -lndir -lcrypt -lsec
libc=/lib/libc.sl, so=sl, useshrplib=false, libperl=libperl.a
Dynamic Linking:
dlsrc=dl_hpux.xs, dlext=sl, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-B,deferred '
cccdlflags='-fpic', lddlflags='-b -L/usr/local/lib'
Characteristics of this binary (from libperl):
Compile-time options: DEBUGGING
Built under hpux
Compiled at Aug 27 2002 08:33:24
@INC:
/opt/perl/lib/5.6.1/PA-RISC2.0
/opt/perl/lib/5.6.1
/opt/perl/lib/site_perl/5.6.1/PA-RISC2.0
/opt/perl/lib/site_perl/5.6.1
/opt/perl/lib/site_perl
.
Re: [mp-1.99_05] segfault modperl_pcw.c:52 ap_pcw_walk_files_config
dconf->sec_file is NULL
Posted by Doug MacEachern <do...@covalent.net>.
On Tue, 27 Aug 2002, Phil Lobbes wrote:
> Hi,
>
> I just recently joined the mail list and did a quick check but didn't
> seen any report of this problem:
>
> Versions: perl-5.6.1 (non-threaded)
> apache-2.0.40 (mpm-prefork)
> mod_perl-1.99_05
> OS: HPUX 11
> Compiler: gcc version 3.2 20020708 (experimental)
>
> I don't know the code well enough to know what data/values are
> expected to be found in dconf, but here is a possible work around
> (most likely less than ideal solution) in the affected portion of C
> code (src/modules/perl/modperl_pcw.c):
>
> + if( (! dconf) || (! dconf->sec_file) )
> + return;
> ap_conf_vector_t **dirs = (ap_conf_vector_t **)dconf->sec_file->elts;
which one is NULL dconf or dconf->sec_file? if dconf->sec_file should
never be NULL. i'm not sure if it is possible for dconf itself to be
NULL. do you have some example configuration that causes the problem?