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From Fred Moyer <f...@redhotpenguin.com>
Subject Re: mod_perl-2.0.4 with Apache 2.2.9 and perl 5.10.0 intermittent crashing
Date Wed, 27 Jan 2010 19:12:41 GMT
Perl 5.10.1 is still relatively new, so you might want to give 5.8.9 a
shot.  That is more heavily vetted on lesser used platforms such as
Solaris.

On Wed, Jan 27, 2010 at 9:28 AM, Pas Argenio <pas.argenio@gmail.com> wrote:
> I just fell back to Apache-2.2.8 but same problem.  By the way, Tosh, how
> did you dump the libperl info?
> I'm getting more core dumps than you, but pages are displayed by the next
> child to pick it up.  Here is the most common stack trace (via Solaris'
> pstack command):
>
> Wed Jan 27 09:06:35 EST 2010
> core '/tmp/core' of 13862:    /usr/local/apache/bin/httpd -k start
>  fee56ec8 t_delete (528c90, 228, 0, fecb2e24, fef303a8, c20360) + 74
>  fee56ac4 realfree (528a60, 229, d995c, fee56eb0, 0, 528a58) + 8c
>  fee56610 _malloc_unlocked (528598, 6f8, 528590, ff, 0, 0) + 260
>  fee56394 malloc   (4c8, 1, da058, fee563a0, fef303a8, fef3a518) + 4c
>  fec8ae8c Perl_safesysmalloc (4c8, 0, 2000000, fffffff8, c000004, c329d9) +
> 10
>  fecc2294 Perl_sv_grow (d17680, 4c8, 0, 2000000, 4cb, 0) + f8
>  fecbd094 Perl_sv_setsv_flags (84408, 4c7, 12c04540, d17680, d177e0,
> ff800000) + ea0
>  fecbd5ac Perl_sv_mortalcopy (d177e0, 5e65d0, fed76000, 78, fed74400,
> d17680) + 60
>  fecb2e24 Perl_pp_aassign (fed76294, 5b8c20, 5b8c0c, 5b8c1c, 0, fed74400) +
> 154
>  fecaa830 Perl_runops_standard (0, fecb2cd0, fed75c88, 91c2c0, fed75c00,
> 91cec0) + 1c
>  feca4ce0 Perl_call_sv (fed75c00, fed76000, fed76000, fed75c00, fed75c00,
> 91c2c0) + 4a4
>  fec1ca94 modperl_callback (0, 44b410, 44b450, ab4b8, 160080, fed76000) +
> 338
>  fec1d05c modperl_callback_run_handlers (fed75dec, 4, 44b450, 121dc8, ab4b8,
> 0) + 31c
>  fec1d32c modperl_callback_per_dir (6, 44b450, 1, 1, ffbff03c, 214678) + 24
>  fec19ab4 modperl_response_handler_run (44b450, 0, 1460, 0, fed761d8,
> fed76000) + 18
>  fec19cc4 modperl_response_handler_cgi (44b450, 4484b8, 121520, 0, 99070, 9)
> + 134
>  0003bfe4 ap_run_handler (44b450, 0, c, 449018, 448728, 0) + 3c
>  0003c460 ap_invoke_handler (44b450, 77400, 44b450, 0, fe780020, 0) + b8
>  000547f8 ap_process_request (44b450, 0, 4, 44b450, 0, 443728) + 160
>  00051964 ap_process_http_connection (4436c8, 443430, 443430, 0, 998d0, 2) +
> 10c
>  00042790 ap_run_process_connection (4436c8, 443430, 443430, 0, 441438,
> 4453f8) + 3c
>  00067a10 child_main (0, 0, 99c00, 99800, 11177, 99800) + 42c
>  00067c74 make_child (67400, 0, 0, fe781020, 440fc8, 0) + ec
>  00067d44 startup_children (5, feebd280, 0, 10, 1cf4, a) + 68
>  000686b0 ap_mpm_run (a4878, 99800, ab4b8, 99c00, 99800, 99800) + 950
>  000291f4 main     (a4878, 96c00, 99000, 99000, a2870, 0) + 780
>  00028594 _start   (0, 0, 0, 0, 0, 0) + 5c
>
> My MPM is straight pre-fork, default 5 children to start with.
> Unfortunately, this stuff needs to go into production soon.
>
>
>
> On Wed, Jan 27, 2010 at 11:42 AM, Tosh Cooey <tosh@1200group.com> wrote:
>>
>> I'm seeing the same thing on my DEV server which is:
>>
>> Server: Apache/2.2.11 (Ubuntu) mod_perl/2.0.4 Perl/v5.10.0
>>
>> I see it in the mornings when it has been sitting around all night doing
>> nothing, and the first couple hits result in core dumps/seg faults, then
>> after pounding REFRESH like a mad monkey a couple times it then works.
>>
>> This is on an Amazon EC2 Ubuntu 9.04 jaunty AMI built by Eric Hammond
>> http://alestic.com  http://ec2ubuntu-group.notlong.com
>>
>> perl -V:
>>
>> Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
>>  Platform:
>>    osname=linux, osvers=2.6.24-23-server,
>> archname=i486-linux-gnu-thread-multi
>>    uname='linux rothera 2.6.24-23-server #1 smp wed apr 1 22:22:14 utc
>> 2009 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='4.3.3', 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-2.9.so, so=so, useshrplib=true,
>> libperl=libperl.so.5.10.0
>>    gnulibc_version='2.9'
>>  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 Jun 26 2009 18:23:00
>>  @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
>>    .
>>
>>
>> Of course this could also just be all the illegitimate bastard apache
>> children I have been spawning being totally unprepared to answer a real web
>> request, but I'm keeping an eye on this server...
>>
>> Tosh
>>
>>
>> Pas Argenio wrote:
>>>
>>> Sorry if this is naive, but has anyone gotten this combo to work?
>>>  Upgraded to Apache 2.2.14, now crash on almost every request, then next
>>> httpd picks up the request and actually displays the page...
>>>
>>> I've got massive core dumps all ending in malloc/free, truss shows last
>>> operation was close()
>>
>> --
>> McIntosh Cooey - Twelve Hundred Group LLC - http://www.1200group.com/
>
>

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