# New Ticket Created by [EMAIL PROTECTED]
# Please include the string: [perl #36667]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=36667 >
This is a bug report for perl from [EMAIL PROTECTED],
generated with the help of perlbug 1.35 running under perl v5.8.7.
-----------------------------------------------------------------
I came across this problem when not only myself, but several other
FreeBSD users upgraded to perl 5.8.7 and were noticing that their
amavisd-new installations were not working properly. After some
testing and digging, it turns out that spamassassin 3.0 was causing
a bus error. Using the perl debugger, the line causing the bus
error turns out to be:
> DB<4> v
> 1955 EOT
> 1956
> 1957 # and run it.
> 1958==> eval $evalstr;
> 1959: if ($@) {
> 1960: warn("Failed to compile URI SpamAssassin tests, skipping:\n".
> 1961 "\t($@)\n");
> 1962: $self->{rule_errors}++;
> 1963 }
> 1964 else {
eXamining $evalstr produces an incredibly lengthy string full of
many if statements. Using a debug version of perl 5.8.7, and gdb:
#0 0x280a2144 in Perl_malloc (nbytes=25) at malloc.c:1411
#1 0x281075b5 in S_save_hek_flags (str=0x935b328 "WLS_URI_OPT_377", len=15,
hash=1020016264, flags=0) at hv.c:97
#2 0x2810aa51 in S_share_hek_flags (str=0x935b328 "WLS_URI_OPT_377", len=15,
hash=1020016264, flags=0) at hv.c:2114
#3 0x2810a940 in Perl_share_hek (str=0x935b328 "WLS_URI_OPT_377", len=15,
hash=1020016264) at hv.c:2074
#4 0x28129e29 in Perl_newSVpvn_share (src=0x935b328 "WLS_URI_OPT_377", len=15,
hash=1020016264) at sv.c:6876
#5 0x280def33 in Perl_peep (o=0x935f288) at op.c:6699
#6 0x280debcc in Perl_peep (o=0x935ef88) at op.c:6634
... (lots of calls to Perl_peep, o= different numbers each time.. I'm assuming
it's a recursive function)
#5432 0x280debcc in Perl_peep (o=0x8081108) at op.c:6634
#5433 0x280debcc in Perl_peep (o=0x8587a48) at op.c:6634
#5434 0x280debcc in Perl_peep (o=0x8062b08) at op.c:6634
#5435 0x280d10d5 in Perl_newPROG (o=0x8062b88) at op.c:1952
#5436 0x280cac39 in Perl_yyparse () at perly.y:140
#5437 0x28155eb7 in S_doeval (gimme=128, startop=0x0, outside=0x805829c, seq=0)
at pp_ctl.c:2892
#5438 0x281588ef in Perl_pp_entereval () at pp_ctl.c:3486
#5439 0x280f8ebe in Perl_runops_debug () at dump.c:1452 #5440 0x2809be1f in
S_run_body (oldscope=1) at perl.c:2000
#5441 0x2809b8d5 in perl_run (my_perl=0x804e1f0) at perl.c:1919
#5442 0x08049188 in main ()
This happens on line 21720 of the $evalstr, and the following was also noticed:
(5434 (first Perl_peep line) - 4 (line after last Perl_peep) * 4 = 21720
FreeBSD 5.4 seems to have a default stack hardlimit of 64MB. Increasing
this hardlimit to 128MB (by changing the MAXSSIZ option in the kernel)
allows eval to process more lines of $evalstr, but still not enough to
get all the way through. Originally, perl 5.8.7 was compiled with CFLAGS
of -O2, but changing CFLAGS to -O0 didn't help either. Changing CFLAGS to
-Os however did the trick.
This is reproducable on 2 other FreeBSD 5.4 systems. This bus error
does not occur with perl 5.8.5 or perl 5.8.6 on these same systems.
This bus error also does not appear on a tested Linux 2.6 (with an
unlimited stack), or on an OpenBSD 3.7 (with an 8M stack). I have
test cases that I'm willing to send, but not attaching due to their
sizes.
-----------------------------------------------------------------
---
Flags:
category=core
severity=medium
---
Site configuration information for perl v5.8.7:
Configured by root at Mon Jul 25 16:56:21 CDT 2005.
Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
Platform:
osname=freebsd, osvers=5.4-release-p4, archname=i386-freebsd-64int
uname='freebsd freebsd.cdsinet.net 5.4-release-p4 freebsd 5.4-release-p4
#12: wed jul 6 10:39:12 cdt 2005 [EMAIL PROTECTED]:usrobjusrsrcsysnoaa i386 '
config_args='-sde -Dprefix=/usr/local
-Darchlib=/usr/local/lib/perl5/5.8.7/mach -Dprivlib=/usr/local/lib/perl5/5.8.7
-Dman3dir=/usr/local/lib/perl5/5.8.7/perl/man/man3
-Dman1dir=/usr/local/man/man1
-Dsitearch=/usr/local/lib/perl5/site_perl/5.8.7/mach
-Dsitelib=/usr/local/lib/perl5/site_perl/5.8.7 -Dscriptdir=/usr/local/bin
-Dsiteman3dir=/usr/local/lib/perl5/5.8.7/man/man3
-Dsiteman1dir=/usr/local/man/man1 -Ui_malloc -Ui_iconv -Uinstallusrbinperl
-Dcc=cc -Duseshrplib
-Dccflags=-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.7/BSDPAN" -Doptimize=-Os
-Ud_dosuid -Ui_gdbm -Dusethreads=n -Dusemymalloc=n -Duse64bitint'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef
usemultiplicity=undef
useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
use64bitint=define use64bitall=undef uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.7/BSDPAN"
-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe
-I/usr/local/include',
optimize='-Os',
cppflags='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.7/BSDPAN" -DHAS_FPSETMASK
-DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -I/usr/local/include'
ccversion='', gccversion='3.4.2 [FreeBSD] 20040728', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='cc', ldflags ='-pthread -Wl,-E -L/usr/local/lib'
libpth=/usr/lib /usr/local/lib
libs=-lgdbm -lm -lcrypt -lutil
perllibs=-lm -lcrypt -lutil
libc=, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='
-Wl,-R/usr/local/lib/perl5/5.8.7/mach/CORE'
cccdlflags='-DPIC -fPIC', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
defined-or
---
@INC for perl v5.8.7:
/usr/local/lib/perl5/site_perl/5.8.7
/usr/local/lib/perl5/site_perl/5.8.7/mach
/usr/local/lib/perl5/site_perl
/usr/local/lib/perl5/5.8.7/BSDPAN
/usr/local/lib/perl5/5.8.7/mach
/usr/local/lib/perl5/5.8.7
.
---
Environment for perl v5.8.7:
HOME=/home/z/zeek
LANG (unset)
LANGUAGE (unset)
LC_ALL=POSIX
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/home/z/zeek/bin:/home/z/zeek/bin:.
PERL_BADLANG (unset)
SHELL=/usr/local/bin/bash
