Package: libapache2-mod-perl2 Version: 2.0.4-7 Severity: important Note: All log excerpts below have been edited to censor server and path information, but are not tampered with in other ways.
This problem is effectively keeping me from deploying mod_perl in a virtual hosting environment with real users. I have a web server configured with PerlOptions -Enable set in a config file in /etc/apache2/conf.d, which is loaded before any virtualhosts. If I then attempt to load a Perl module with the PerlModule directive, e.g.: PerlModule DateTime ... then the handling Apache child process crashes with a segfault (see log excerpts at the end of the manual part of the report). According to the mod_perl documentation, PerlModule directives are not allowed in .htaccess files. Erroneous user .htaccess configurations should not crash the handling Apache child. If I uncomment "PerlOptions -Enable" globally, web pages still don't load properly, connections get interrupted, but the error log and syslog show no signs of segfaults. I occasionally get messages like these, though: [Thu Nov 03 11:42:06 2011] [alert] [client CENSORED_IP] /path/to/virtualhost/home/.htaccess: Cannot copy to ARRAY in entereval at (eval 910) line 1.\n, referer: http://virtualhost.example/path/to/virtualhost/home/ The problems are reproducible also when I comment out my custom configuration. I don't have a patch for this one yet, I don't quite know where to start. :) Apache's error log: [Thu Nov 03 11:31:57 2011] [notice] child pid 18784 exit signal Segmentation fault (11) [Thu Nov 03 11:31:59 2011] [notice] child pid 18957 exit signal Segmentation fault (11) [Thu Nov 03 11:32:01 2011] [notice] child pid 19088 exit signal Segmentation fault (11) [Thu Nov 03 11:32:03 2011] [notice] child pid 19219 exit signal Segmentation fault (11) /var/log/syslog: Nov 3 11:31:49 CENSORED_HOST kernel: [4473180.753243] apache2[18659]: segfault at 10 ip 00007fa5db2fafdc sp 00007fa5d6918760 error 4 in libperl.so.5.10.1[7fa5db238000+165000] Nov 3 11:31:56 CENSORED_HOST kernel: [4473187.843383] apache2[18798]: segfault at 7fa7cfc127d0 ip 00007fa5db3146a9 sp 00007fa5d2910780 error 6 in libperl.so.5.10.1[7fa5db238000+165000] Nov 3 11:32:02 CENSORED_HOST kernel: [4473193.762818] apache2[19229]: segfault at 10 ip 00007fa5db2fafdc sp 00007fa5d4914760 error 4 in libperl.so.5.10.1[7fa5db238000+165000] -- Package-specific info: -------------8<---------- Start Bug Report ------------8<---------- 1. Problem Description: [DESCRIBE THE PROBLEM HERE] 2. Used Components and their Configuration: *** mod_perl version 2.000004 *** using /usr/lib/perl5/Apache2/BuildConfig.pm *** Makefile.PL options: MP_APR_LIB => aprext MP_APXS => /usr/bin/apxs2 MP_CCOPTS => -g -Wall MP_COMPAT_1X => 1 MP_GENERATE_XS => 1 MP_INCLUDE_DIR => /usr/include/apache2 /usr/include/apr-1.0 MP_LIBNAME => mod_perl MP_TRACE => 0 MP_USE_DSO => 1 MP_USE_GTOP => 1 MP_USE_STATIC => 0 *** The httpd binary was not found *** (apr|apu)-config linking info -L/usr/lib -laprutil-1 -ldb -L/usr/lib -lapr-1 *** /usr/bin/perl -V Summary of my perl5 (revision 5 version 10 subversion 1) configuration: Platform: osname=linux, osvers=2.6.32-5-amd64, archname=x86_64-linux-gnu-thread-multi uname='linux brahms 2.6.32-5-amd64 #1 smp tue jun 14 09:42:28 utc 2011 x86_64 gnulinux ' config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=x86_64-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/5.10.1 -Dsitearch=/usr/local/lib/perl/5.10.1 -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.5.10.1 -Dd_dosuid -des' hint=recommended, useposix=true, d_sigaction=define useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=define, use64bitall=define, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -fstack-protector -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 -fstack-protector -I/usr/local/include' ccversion='', gccversion='4.4.5', gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='cc', ldflags =' -fstack-protector -L/usr/local/lib' libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64 libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt perllibs=-ldl -lm -lpthread -lc -lcrypt libc=/lib/libc-2.11.2.so, so=so, useshrplib=true, libperl=libperl.so.5.10.1 gnulibc_version='2.11.2' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector' Characteristics of this binary (from libperl): Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_64_BIT_ALL USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API Locally applied patches: DEBPKG:debian/arm_thread_stress_timeout - http://bugs.debian.org/501970 Raise the timeout of ext/threads/shared/t/stress.t to accommodate slower build hosts DEBPKG:debian/cpan_config_path - Set location of CPAN::Config to /etc/perl as /usr may not be writable. DEBPKG:debian/cpan_definstalldirs - Provide a sensible INSTALLDIRS default for modules installed from CPAN. DEBPKG:debian/db_file_ver - http://bugs.debian.org/340047 Remove overly restrictive DB_File version check. DEBPKG:debian/doc_info - Replace generic man(1) instructions with Debian-specific information. DEBPKG:debian/enc2xs_inc - http://bugs.debian.org/290336 Tweak enc2xs to follow symlinks and ignore missing @INC directories. DEBPKG:debian/errno_ver - http://bugs.debian.org/343351 Remove Errno version check due to upgrade problems with long-running processes. DEBPKG:debian/extutils_hacks - Various debian-specific ExtUtils changes DEBPKG:debian/fakeroot - Postpone LD_LIBRARY_PATH evaluation to the binary targets. DEBPKG:debian/instmodsh_doc - Debian policy doesn't install .packlist files for core or vendor. DEBPKG:debian/ld_run_path - Remove standard libs from LD_RUN_PATH as per Debian policy. DEBPKG:debian/libnet_config_path - Set location of libnet.cfg to /etc/perl/Net as /usr may not be writable. DEBPKG:debian/m68k_thread_stress - http://bugs.debian.org/495826 Disable some threads tests on m68k for now due to missing TLS. DEBPKG:debian/mod_paths - Tweak @INC ordering for Debian DEBPKG:debian/module_build_man_extensions - http://bugs.debian.org/479460 Adjust Module::Build manual page extensions for the Debian Perl policy DEBPKG:debian/perl_synopsis - http://bugs.debian.org/278323 Rearrange perl.pod DEBPKG:debian/prune_libs - http://bugs.debian.org/128355 Prune the list of libraries wanted to what we actually need. DEBPKG:debian/use_gdbm - Explicitly link against -lgdbm_compat in ODBM_File/NDBM_File. DEBPKG:fixes/assorted_docs - http://bugs.debian.org/443733 [384f06a] Math::BigInt::CalcEmu documentation grammar fix DEBPKG:fixes/net_smtp_docs - http://bugs.debian.org/100195 [rt.cpan.org #36038] Document the Net::SMTP 'Port' option DEBPKG:fixes/processPL - http://bugs.debian.org/357264 [rt.cpan.org #17224] Always use PERLRUNINST when building perl modules. DEBPKG:debian/perlivp - http://bugs.debian.org/510895 Make perlivp skip include directories in /usr/local DEBPKG:fixes/pod2man-index-backslash - http://bugs.debian.org/521256 Escape backslashes in .IX entries DEBPKG:debian/disable-zlib-bundling - Disable zlib bundling in Compress::Raw::Zlib DEBPKG:fixes/kfreebsd_cppsymbols - http://bugs.debian.org/533098 [3b910a0] Add gcc predefined macros to $Config{cppsymbols} on GNU/kFreeBSD. DEBPKG:debian/cpanplus_definstalldirs - http://bugs.debian.org/533707 Configure CPANPLUS to use the site directories by default. DEBPKG:debian/cpanplus_config_path - Save local versions of CPANPLUS::Config::System into /etc/perl. DEBPKG:fixes/kfreebsd-filecopy-pipes - http://bugs.debian.org/537555 [16f708c] Fix File::Copy::copy with pipes on GNU/kFreeBSD DEBPKG:fixes/anon-tmpfile-dir - http://bugs.debian.org/528544 [perl #66452] Honor TMPDIR when open()ing an anonymous temporary file DEBPKG:fixes/abstract-sockets - http://bugs.debian.org/329291 [89904c0] Add support for Abstract namespace sockets. DEBPKG:fixes/hurd_cppsymbols - http://bugs.debian.org/544307 [eeb92b7] Add gcc predefined macros to $Config{cppsymbols} on GNU/Hurd. DEBPKG:fixes/autodie-flock - http://bugs.debian.org/543731 Allow for flock returning EAGAIN instead of EWOULDBLOCK on linux/parisc DEBPKG:fixes/archive-tar-instance-error - http://bugs.debian.org/539355 [rt.cpan.org #48879] Separate Archive::Tar instance error strings from each other DEBPKG:fixes/positive-gpos - http://bugs.debian.org/545234 [perl #69056] [c584a96] Fix \G crash on first match DEBPKG:debian/devel-ppport-ia64-optim - http://bugs.debian.org/548943 Work around an ICE on ia64 DEBPKG:fixes/trie-logic-match - http://bugs.debian.org/552291 [perl #69973] [0abd0d7] Fix a DoS in Unicode processing [CVE-2009-3626] DEBPKG:fixes/hppa-thread-eagain - http://bugs.debian.org/554218 make the threads-shared test suite more robust, fixing failures on hppa DEBPKG:fixes/crash-on-undefined-destroy - http://bugs.debian.org/564074 [perl #71952] [1f15e67] Fix a NULL pointer dereference when looking for a DESTROY method DEBPKG:fixes/tainted-errno - http://bugs.debian.org/574129 [perl #61976] [be1cf43] fix an errno stringification bug in taint mode DEBPKG:fixes/safe-upgrade - http://bugs.debian.org/582978 Upgrade Safe.pm to 2.25, fixing CVE-2010-1974 DEBPKG:fixes/tell-crash - http://bugs.debian.org/578577 [f4817f3] Fix a tell() crash on bad arguments. DEBPKG:fixes/format-write-crash - http://bugs.debian.org/579537 [perl #22977] [421f30e] Fix a crash in format/write DEBPKG:fixes/arm-alignment - http://bugs.debian.org/289884 [f1c7503] Prevent gcc from optimizing the alignment test away on armel DEBPKG:fixes/fcgi-test - Fix a failure in CGI/t/fast.t when FCGI is installed DEBPKG:fixes/hurd-ccflags - http://bugs.debian.org/587901 Make hints/gnu.sh append to $ccflags rather than overriding them DEBPKG:debian/squelch-locale-warnings - http://bugs.debian.org/508764 Squelch locale warnings in Debian package maintainer scripts DEBPKG:fixes/lc-numeric-docs - http://bugs.debian.org/379329 [perl #78452] [903eb63] LC_NUMERIC documentation fixes DEBPKG:fixes/lc-numeric-sprintf - http://bugs.debian.org/601549 [perl #78632] [b3fd614] Fix sprintf not to ignore LC_NUMERIC with constants DEBPKG:fixes/concat-stack-corruption - http://bugs.debian.org/596105 [perl #78674] [e3393f5] Fix stack pointer corruption in pp_concat() with 'use encoding' DEBPKG:fixes/cgi-multiline-header - http://bugs.debian.org/606995 [CVE-2010-2761 CVE-2010-4410 CVE-2010-4411] CGI.pm MIME boundary and multiline header vulnerabilities DEBPKG:fixes/casing-taint-cve-2011-1487 - http://bugs.debian.org/622817 [perl #87336] fix unwanted taint laundering in lc(), uc() et al. DEBPKG:fixes/safe-reval-rdo-cve-2010-1447 - [PATCH] Wrap by default coderefs returned by rdo and reval DEBPKG:patchlevel - http://bugs.debian.org/567489 List packaged patches for 5.10.1-17squeeze2 in patchlevel.h Built under linux Compiled at Jun 30 2011 22:28:00 %ENV: PERL_LWP_USE_HTTP_10="1" @INC: /etc/perl /usr/local/lib/perl/5.10.1 /usr/local/share/perl/5.10.1 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl . *** Packages of interest status: Apache2 : - Apache2::Request : - CGI : 3.43, 3.49 ExtUtils::MakeMaker: 6.55_02 LWP : 5.836 mod_perl : - mod_perl2 : 2.000004 3. This is the core dump trace: (if you get a core dump): [CORE TRACE COMES HERE] This report was generated by /usr/share/libapache2-mod-perl2/mp2bug on Thu Nov 3 10:16:47 2011 GMT. -------------8<---------- End Bug Report --------------8<---------- -- System Information: Debian Release: 6.0.3 APT prefers stable APT policy: (990, 'stable'), (500, 'stable-updates') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/16 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages libapache2-mod-perl2 depends on: ii apache2 2.2.16-6+squeeze4 Apache HTTP Server metapackage ii apache2-mpm-worker [ap 2.2.16-6+squeeze4 Apache HTTP Server - high speed th ii apache2.2-common 2.2.16-6+squeeze4 Apache HTTP Server common files ii libapr1 1.4.2-6+squeeze3 The Apache Portable Runtime Librar ii libaprutil1 1.3.9+dfsg-5 The Apache Portable Runtime Utilit ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib ii libdb4.8 4.8.30-2 Berkeley v4.8 Database Libraries [ ii libdevel-symdump-perl 2.08-3 Perl module for inspecting perl's ii libperl5.10 5.10.1-17squeeze2 shared Perl library ii liburi-perl 1.54-2 module to manipulate and access UR ii libwww-perl 5.836-1 Perl HTTP/WWW client/server librar ii netbase 4.45 Basic TCP/IP networking system ii perl [libmime-base64-p 5.10.1-17squeeze2 Larry Wall's Practical Extraction ii perl-base [perlapi-5.1 5.10.1-17squeeze2 minimal Perl system Versions of packages libapache2-mod-perl2 recommends: ii libapache2-reload-perl 0.10-2 Reload Perl modules when changed o ii libbsd-resource-perl 1.2904-1 BSD process resource limit and pri libapache2-mod-perl2 suggests no packages. -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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