From: Petr Hracek <phracek@redhat.com>
To: 20614@debbugs.gnu.org
Subject: bug#20614: Segmentation fault when building on Power8 Little Endian
Date: Tue, 22 Sep 2015 12:17:10 +0200 [thread overview]
Message-ID: <56012AA6.7010702@redhat.com> (raw)
In-Reply-To: <55F95275.4040209@redhat.com>
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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@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@x4u2.desy.de (Karsten Kuenne) and
> oliva@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@redhat.com
--
Petr Hracek
Software Engineer
Developer Experience
Red Hat, Inc
Mob: +420777056169
email: phracek@redhat.com
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next prev parent reply other threads:[~2015-09-22 10:17 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-20 7:56 bug#20614: Segmentation fault when building on Power8 Little Endian Petr Hracek
2015-05-20 14:45 ` Eli Zaretskii
2015-05-20 16:12 ` Glenn Morris
2015-05-21 12:55 ` Petr Hracek
2015-07-13 11:27 ` Petr Hracek
2015-07-13 13:16 ` Andreas Schwab
2015-07-14 7:52 ` Petr Hracek
2015-07-14 8:14 ` Andreas Schwab
2015-09-16 11:28 ` Petr Hracek
2015-09-22 10:17 ` Petr Hracek [this message]
2015-09-23 8:06 ` Petr Hracek
2015-09-23 9:34 ` Eli Zaretskii
2015-09-23 11:00 ` Petr Hracek
2015-09-23 11:14 ` Eli Zaretskii
2015-09-23 12:11 ` Petr Hracek
2015-09-23 12:23 ` Eli Zaretskii
2015-09-24 11:04 ` Petr Hracek
2015-09-24 15:32 ` Eli Zaretskii
2015-09-24 17:56 ` Petr Hracek
2015-09-26 7:58 ` Eli Zaretskii
2015-09-30 10:39 ` Petr Hracek
2015-10-01 7:43 ` Eli Zaretskii
2015-10-01 8:46 ` Petr Hracek
2015-10-01 11:44 ` Petr Hracek
2015-10-01 11:53 ` Petr Hracek
2015-10-01 12:22 ` Eli Zaretskii
2015-10-01 14:05 ` Petr Hracek
2015-10-01 16:01 ` Eli Zaretskii
2015-10-02 8:36 ` Petr Hracek
2015-10-02 8:49 ` Eli Zaretskii
2015-10-02 12:58 ` Petr Hracek
2015-10-02 13:46 ` Eli Zaretskii
2015-10-05 7:40 ` Petr Hracek
2015-10-05 8:27 ` Eli Zaretskii
2015-10-05 9:16 ` Petr Hracek
2015-10-05 9:39 ` Eli Zaretskii
2015-10-05 11:23 ` Petr Hracek
2015-10-05 11:40 ` Eli Zaretskii
2015-10-05 14:07 ` Petr Hracek
2015-10-05 16:52 ` Eli Zaretskii
2015-10-06 8:41 ` Petr Hracek
2015-10-06 11:52 ` Petr Hracek
2015-10-06 14:55 ` Eli Zaretskii
2015-10-07 8:17 ` Petr Hracek
2015-10-07 10:56 ` YAMAMOTO Mitsuharu
2015-10-07 12:26 ` Petr Hracek
2015-10-08 0:54 ` YAMAMOTO Mitsuharu
2015-10-08 13:27 ` Jaromir Capik
2015-10-10 1:40 ` YAMAMOTO Mitsuharu
2015-10-10 15:44 ` Andreas Schwab
2015-10-13 7:30 ` Petr Hracek
2015-10-13 8:30 ` Andreas Schwab
2015-10-16 15:24 ` Jaromir Capik
2015-10-19 7:20 ` Andreas Schwab
2015-09-23 12:10 ` Petr Hracek
2015-09-23 12:21 ` Eli Zaretskii
2015-09-23 13:10 ` Petr Hracek
2015-09-23 13:38 ` Petr Hracek
2015-09-23 13:57 ` Eli Zaretskii
2015-09-23 17:25 ` Glenn Morris
2015-09-23 17:47 ` Glenn Morris
2015-09-29 8:15 ` Florian Weimer
2015-07-13 12:17 ` bug#20614: Segmentation fault when building on Power8 Little Endian (ppc64le) Petr Hracek
2015-11-17 1:59 ` bug#20614: alignment problem with recent Emacs unexelf.c changes Paul Eggert
2015-11-17 9:03 ` Alan Modra
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