Package: emacs;
Reported by: Petr Hracek <phracek <at> redhat.com>
Date: Wed, 20 May 2015 07:59:01 UTC
Severity: important
Tags: patch
Done: Lars Ingebrigtsen <larsi <at> gnus.org>
Bug is archived. No further changes may be made.
Message #40 received at 20614 <at> debbugs.gnu.org (full text, mbox):
From: Petr Hracek <phracek <at> redhat.com> To: 20614 <at> debbugs.gnu.org Subject: Re: bug#20614: Segmentation fault when building on Power8 Little Endian Date: Wed, 23 Sep 2015 10:06:50 +0200
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Is there any possibility how to suppress dumping emacs?
Shall I add something to ./configure script or even to make?
Greetings
On 09/22/2015 12:17 PM, Petr Hracek wrote:
> I have a question:
>
> would it be possible to remove unexelf.c code and replace them with a
> "just map a file with pre-compiled byte code" as advice me a
> colleagues in Red Hat?
>
> It seems that this code is also incompatible with PIE.
>
> Together with our binutils-2.23.52.0.1-54
> (https://bugzilla.redhat.com/show_bug.cgi?id=1247126)
> it segfaults each time. Now.
> What do you think about it?
>
> Nowadays I have commented out the code mentioned on line
> http://git.savannah.gnu.org/cgit/emacs.git/tree/src/unexelf.c?h=emacs-24#n869
> and afterwards is fails with
> Finding pointers to doc strings...
> Finding pointers to doc strings...done
> Dumping under the name emacs
> /bin/sh: line 7: 15764 Segmentation fault `/bin/pwd`/temacs --batch --load loadup bootstrap
> make[2]: *** [bootstrap-emacs] Error 1
> make[2]: Leaving directory `/builddir/build/BUILD/emacs-24.3/build-gtk/src'
>
>
> Important version of packages:
> glibc-2.17-103.el7.ppc64le
> gcc-4.8.5-4.el7.ppc64le
> binutils-2.23.52.0.1-54.el7.ppc64le
> Greetings Petr On 09/16/2015 01:28 PM, Petr Hracek wrote:
>> On 07/14/2015 09:52 AM, Petr Hracek wrote:
>>> On 07/13/2015 03:16 PM, Andreas Schwab wrote:
>>>> Petr Hracek <phracek <at> redhat.com> writes:
>>>>> Does emacs-24.3 support ppc64le?
>>>> https://build.opensuse.org/package/binaries/openSUSE:13.2/emacs?repository=ports
>>>> http://download.opensuse.org/ports/ppc/distribution/13.2/repo/oss/suse/ppc64le/emacs-x11-24.3-17.2.2.ppc64le.rpm
>>>> Andreas.
>>> I have find out that the error message Loading
>>> /home/phracek/rpmbuild/BUILD/emacs-24.3/lisp/tooltip.el (source)...
>>> Finding pointers to doc strings... Finding pointers to doc
>>> strings...done Dumping under the name emacs emacs: Program segment
>>> above .bss in
>>> /home/phracek/rpmbuild/BUILD/emacs-24.3/build-gtk/src/temacs
>>> make[2]: *** [bootstrap-emacs] Error 1 comes from file src/unexelf.c
>>> line 860 (emacs-24.3) What this function does? I saw in openSUSE
>>> SRPM that option --with-wide-int is used. In Fedora or RHEL we are
>>> not using it. Options which are used for compiling are: ./configure
>>> --build=powerpc64le-redhat-linux-gnu
>>> --host=powerpc64le-redhat-linux-gnu --program-prefix=
>>> --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
>>> --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
>>> --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
>>> --libexecdir=/usr/libexec --localstatedir=/var
>>> --sharedstatedir=/var/lib --mandir=/usr/share/man
>>> --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg
>>> --with-png --with-rsvg --with-tiff --with-xft --with-xpm
>>> --with-x-toolkit=gtk3 --with-gpm=no
>>> build_alias=powerpc64le-redhat-linux-gnu
>>> host_alias=powerpc64le-redhat-linux-gnu CFLAGS=-DMAIL_USE_LOCKF -O2
>>> -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
>>> -fstack-protector-strong --param=ssp-buffer-size=4
>>> -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8
>>> LDFLAGS=-Wl,-z,relro --no-create --no-recursion
>> Building emacs package on Fedora or even on OpenSuse works fine. But
>> under RHEL-7 still fails. Emacs is build up with full RELRO, though.
>> Version of packages which are used for compilation are: gcc-4.8.3
>> automake-1.13.4 autoconf-2.69 Compilation flags are:
>> ./configure --build=ppc64le-redhat-linux-gnu --host=ppc64le-redhat-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-link-time-optimization --with-dbus --with-gif --with-jpeg --with-png --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3 --with-gpm=no
>> + LDFLAGS=-Wl,-z,relro
>> + export LDFLAGS
>> + CFLAGS='-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8'
>> + export CFLAGS
>> + CXXFLAGS='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8'
>> + export CXXFLAGS
>> + FFLAGS='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8 -I/usr/lib64/gfortran/modules'
>> + export FFLAGS
>> + FCFLAGS='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8 -I/usr/lib64/gfortran/modules'
>> + export FCFLAGS
>> + LDFLAGS=-Wl,-z,relro
>> + export LDFLAGS
>> emacs is SPEC file is compiled so that in %prep section is: - setup -
>> patching some files - ./autogen.sh %build section for emacs-gtk: -
>> ./configure is called. - make bootstrap - make %build section for
>> emacs-nox is: - ./configure is called. - make Is this correct?
>> Compilator has settings like:
>> CC='gcc -std=gnu99' CFLAGS='-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8 -flto=32' CPPFLAGS='' \
>> LDFLAGS='-Wl,-z,relro -Wl,-znocombreloc ' MAKE='make'
>> gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I/builddir/build/BUILD/emacs-24.3/lib -I../src -I/builddir/build/BUILD/emacs-24.3/src -DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8 -flto=32 -c /builddir/build/BUILD/emacs-24.3/lib/allocator.c
>> linker has a settings like:
>> gcc -std=gnu99 -I. -I../src -I../lib -I/builddir/build/BUILD/emacs-24.3/lib-src -I/builddir/build/BUILD/emacs-24.3/lib-src/../src -I/builddir/build/BUILD/emacs-24.3/lib-src/../lib -Wl,-z,relro -Wl,-znocombreloc -DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mcpu=power7 -mtune=power8 -flto=32 -DEMACS_NAME="\"GNU Emacs\"" \
>> -DVERSION="\"24.3\"" /builddir/build/BUILD/emacs-24.3/lib-src/etags.c \
>> regex.o ../lib/libgnu.a -o etags
>>
>> Before segmentation fault build log is:
>> if test "no" = "yes"; then \
>> rm -f bootstrap-emacs; \
>> ln temacs bootstrap-emacs; \
>> else \
>> `/bin/pwd`/temacs --batch --load loadup bootstrap || exit 1; \
>> test "X" = X || -zex emacs; \
>> mv -f emacs bootstrap-emacs; \
>> fi
>> Loading loadup.el (source)...
>> Using load-path (/builddir/build/BUILD/emacs-24.3/lisp /builddir/build/BUILD/emacs-24.3/lisp/emacs-lisp /builddir/build/BUILD/emacs-24.3/lisp/language /builddir/build/BUILD/emacs-24.3/lisp/international /builddir/build/BUILD/emacs-24.3/lisp/textmodes)
>> Loading emacs-lisp/byte-run (source)...
>> Loading emacs-lisp/backquote (source)...
>> [ .. snip ...]dir/build/BUILD/emacs-24.3/lisp/vc/vc-hooks.el (source)...
>> Loading /builddir/build/BUILD/emacs-24.3/lisp/vc/ediff-hook.el (source)...
>> Loading /builddir/build/BUILD/emacs-24.3/lisp/tooltip.el (source)...
>> Finding pointers to doc strings...
>> Finding pointers to doc strings...done
>> Dumping under the name emacs
>> emacs: Program segment above .bss in /builddir/build/BUILD/emacs-24.3/build-gtk/src/temacs
>> make[2]: *** [bootstrap-emacs] Error 1
>> make[2]: Leaving directory `/builddir/build/BUILD/emacs-24.3/build-gtk/src'
>> make[1]: *** [src] Error 2
>> Part of code which is relevant is from src/unexelf.c: for (n =
>> new_file_h->e_phnum; --n >= 0; ) { /* Compute maximum of
>> all requirements for alignment of section. */ ElfW (Word)
>> alignment = (NEW_PROGRAM_H (n)).p_align; if ((OLD_SECTION_H
>> (old_bss_index)).sh_addralign > alignment) alignment =
>> OLD_SECTION_H (old_bss_index).sh_addralign; #ifdef __sgi /*
>> According to r02kar <at> x4u2.desy.de (Karsten Kuenne) and
>> oliva <at> gnu.org (Alexandre Oliva), on IRIX 5.2, we always get
>> "Program segment above .bss" when dumping when the
>> executable doesn't have an sbss section. */ if (old_sbss_index
>> != -1) #endif /* __sgi */ if (NEW_PROGRAM_H (n).p_vaddr +
>> NEW_PROGRAM_H (n).p_filesz > (old_sbss_index == -1 ?
>> old_bss_addr : round_up (old_bss_addr, alignment))) *fatal
>> ("Program segment above .bss in %s", old_name);* if
>> (NEW_PROGRAM_H (n).p_type == PT_LOAD If I understand there shouldn't
>> be a problem on ppc64le. But I don't understand a code at all.
>> --
>> Petr Hracek
>> Software Engineer
>> Developer Experience
>> Red Hat, Inc
>> Mob: +420777056169
>> email:phracek <at> redhat.com
> --
> Petr Hracek
> Software Engineer
> Developer Experience
> Red Hat, Inc
> Mob: +420777056169
> email:phracek <at> redhat.com
--
Petr Hracek
Software Engineer
Developer Experience
Red Hat, Inc
Mob: +420777056169
email: phracek <at> redhat.com
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