Hi. Recently, I started to experience a segfault in Apache when accessing Trac (using mod_python method). As the logs do not show anything useful, I wanted to get at least a backtrace to provide to the developers. But I am unable to get anything useful. After reading http://www.gentoo.org/proj/en/hardened/hardenedfaq.xml#hardeneddebug I've added LDFLAGS="-nopie" to make.conf I also have "-ggdb" in CFLAGS and "splitdebug" in FEATURES. I've recompiled the packages using emerge -e mod_python Now when I run Apache under gdb, cause it to crash and use the backtrace command, still I get only a bunch of question marks instead of function names. Please, update the documentation so that it includes steps that actually work to get a meaningful backtrace.
Which packages where compiled without pie, with ggdb CFLAG and with splitdebug FEATURE?
(In reply to comment #1) > Which packages where compiled without pie, with ggdb CFLAG and with splitdebug > FEATURE? this is the list: # emerge -pve mod_python These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild R ] sys-apps/portage-2.1.6.13 USE="-build -doc -epydoc (-selinux)" LINGUAS="-pl" 0 kB [ebuild R ] sys-libs/ncurses-5.6-r2 USE="unicode -debug -doc -gpm -minimal -nocxx -profile -trace" 0 kB [ebuild R ] sys-libs/zlib-1.2.3-r1 0 kB [ebuild R ] virtual/libintl-0 0 kB [ebuild R ] sys-devel/gnuconfig-20090203 0 kB [ebuild R ] dev-libs/expat-2.0.1-r2 0 kB [ebuild R ] virtual/libiconv-0 0 kB [ebuild R ] app-misc/pax-utils-0.1.19 USE="-caps" 0 kB [ebuild R ] app-admin/python-updater-0.7 0 kB [ebuild R ] sys-devel/autoconf-wrapper-6 0 kB [ebuild R ] sys-devel/automake-wrapper-3-r1 0 kB [ebuild R ] app-arch/lzma-utils-4.32.7 USE="-nocxx" 0 kB [ebuild R ] app-misc/mime-types-7 0 kB [ebuild R ] dev-db/sqlite-2.8.16-r4 USE="nls -doc -tcl" 0 kB [ebuild R ] dev-db/mysql-init-scripts-1.2 0 kB [ebuild R ] dev-util/pkgconfig-0.23 USE="hardened" 0 kB [ebuild R ] app-shells/bash-4.0_p28 USE="net nls -afs -bashlogger -examples -plugins -vanilla" 0 kB [ebuild R ] sys-apps/sandbox-1.6-r2 0 kB [ebuild R ] sys-devel/m4-1.4.12 USE="-examples" 0 kB [ebuild R ] sys-process/procps-3.2.7 USE="(-n32)" 0 kB [ebuild R ] sys-apps/debianutils-3.1.3 USE="-static" 0 kB [ebuild R ] virtual/acl-0 0 kB [ebuild R ] app-admin/perl-cleaner-1.05 0 kB [ebuild R ] sys-devel/binutils-config-1.9-r4 0 kB [ebuild R ] virtual/mysql-5.0 0 kB [ebuild R ] virtual/perl-Sys-Syslog-0.27 0 kB [ebuild R ] virtual/perl-Storable-2.18 0 kB [ebuild R ] dev-lang/perl-5.8.8-r5 USE="berkdb -build -debug -doc -gdbm -ithreads -perlsuid" 0 kB [ebuild R ] perl-core/Test-Harness-3.10 0 kB [ebuild R ] perl-core/PodParser-1.35 0 kB [ebuild R ] perl-core/Sys-Syslog-0.27 0 kB [ebuild R ] perl-core/Storable-2.18 0 kB [ebuild R ] dev-perl/Net-Daemon-0.43 0 kB [ebuild R ] dev-perl/PlRPC-0.2020-r1 0 kB [ebuild R ] dev-perl/DBI-1.601 0 kB [ebuild R ] sys-devel/autoconf-2.63-r1 USE="-emacs" 0 kB [ebuild R ] sys-devel/automake-1.10.2 0 kB [ebuild R ] sys-devel/gettext-0.17 USE="acl nls -doc -emacs -nocxx -openmp" 0 kB [ebuild R ] sys-apps/texinfo-4.13 USE="nls -static" 0 kB [ebuild R ] dev-libs/popt-1.14 USE="nls" 0 kB [ebuild R ] sys-apps/diffutils-2.8.7-r2 USE="nls -static" 0 kB [ebuild R ] sys-devel/flex-2.5.35 USE="nls -static" 0 kB [ebuild R ] sys-apps/findutils-4.4.0 USE="nls (-selinux) -static" 0 kB [ebuild R ] dev-perl/Locale-gettext-1.05 0 kB [ebuild R ] sys-devel/binutils-2.18-r3 USE="nls (-gold) -multislot -multitarget -test -vanilla" 0 kB [ebuild R ] sys-apps/help2man-1.36.4 USE="nls" 0 kB [ebuild R ] sys-apps/ed-1.0 0 kB [ebuild R ] sys-devel/libtool-2.2.6a USE="-test -vanilla" 0 kB [ebuild R ] sys-libs/readline-6.0_p3 0 kB [ebuild R ] sys-libs/db-4.7.25_p4 USE="-doc -java -nocxx -tcl -test" 0 kB [ebuild R ] sys-apps/attr-2.4.43 USE="nls" 0 kB [ebuild R ] dev-libs/apr-1.3.8 USE="urandom -debug -doc -older-kernels-compatibility" 0 kB [ebuild R ] dev-libs/libpcre-7.9-r1 USE="cxx (unicode) zlib -bzip2 -doc -static-libs" 0 kB [ebuild R ] sys-apps/acl-2.2.47 USE="nls (-nfs)" 0 kB [ebuild R ] dev-db/sqlite-3.6.17 USE="readline threadsafe -debug -doc -soundex -tcl" 0 kB [ebuild R ] sys-devel/libperl-5.8.8-r2 USE="berkdb -debug -gdbm -ithreads" 0 kB [ebuild R ] sys-apps/coreutils-7.5 USE="acl nls -caps -gmp (-selinux) -static -vanilla -xattr" 0 kB [ebuild R ] sys-apps/sed-4.2 USE="acl nls -static" 0 kB [ebuild R ] net-misc/rsync-3.0.6 USE="acl iconv -ipv6 -static -xattr -xinetd" 0 kB [ebuild R ] dev-libs/openssl-0.9.8k USE="zlib -bindist -gmp -kerberos -sse2 -test" 0 kB [ebuild R ] app-misc/ca-certificates-20090709 0 kB [ebuild R ] dev-db/mysql-5.0.70-r1 USE="berkdb perl ssl -big-tables -cluster -debug -embedded -extraengine -latin1 -max-idx-128 -minimal (-selinux) -static" 0 kB [ebuild R ] dev-libs/apr-util-1.3.9 USE="berkdb mysql sqlite -doc -freetds -gdbm -ldap -odbc -postgres -sqlite3" 0 kB [ebuild R ] dev-perl/DBD-mysql-4.00.5 0 kB [ebuild R ] app-admin/apache-tools-2.2.11 USE="ssl" 0 kB [ebuild R ] www-servers/apache-2.2.11-r2 USE="ssl -debug -doc -ldap (-selinux) -sni -static -suexec -threads" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias -asis -auth_digest -authn_dbd -cern_meta -charset_lite -dbd -dumpio -ident -imagemap -log_forensic -proxy -proxy_ajp -proxy_balancer -proxy_connect -proxy_ftp -proxy_http -substitute -version" APACHE2_MPMS="-event -itk -peruser -prefork -worker" 0 kB [ebuild R ] app-admin/eselect-1.2.3 USE="bash-completion -doc" 0 kB [ebuild R ] app-admin/eselect-python-20090824 0 kB [ebuild R ] dev-lang/python-2.6.2-r1 USE="berkdb ncurses readline sqlite ssl threads xml -build -doc -examples -gdbm -ipv6 -tk -ucs2 -wininst" 0 kB [ebuild R ] sys-apps/file-5.03 USE="python" 0 kB [ebuild R ] dev-libs/libxml2-2.7.3-r2 USE="python readline -debug -doc -examples -ipv6 -test" 0 kB [ebuild R ] www-apache/mod_python-3.3.1-r1 0 kB Total: 72 packages (72 reinstalls), Size of downloads: 0 kB
*** This bug has been marked as a duplicate of bug 265693 ***
