Bug 18616 - oprofile fails with "BFD: Dwarf Error: found dwarf version '64617', this reader only handles version 2, 3 and 4 information"
Summary: oprofile fails with "BFD: Dwarf Error: found dwarf version '64617', this read...
Status: WAITING
Alias: None
Product: binutils
Classification: Unclassified
Component: binutils (show other bugs)
Version: 2.25
: P2 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-07-01 05:23 UTC by Daniel Santos
Modified: 2018-05-21 11:56 UTC (History)
3 users (show)

See Also:
Host:
Target:
Build:
Last reconfirmed:


Attachments
Compressed glibc amd64 debug information from a Gentoo system. (6.61 MB, application/x-tar)
2018-04-10 14:00 UTC, Marco Leise
Details

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Description Daniel Santos 2015-07-01 05:23:02 UTC
This is on gentoo where I've built most of my system with -flto and importantly,the FEATURES="compressdebug splitdebug". My guess is that for some reason bdf_openr is failing to realize that the debug file is compressed, as the purported dwarf version is different for each type I get this error (which appears to be for every object file involved). For the session in question, there I get this error running "opannotate --source 350,225" times and the version ranges from 0 to 65535, so I presume this is just a two byte field to which it's picking from compressed data w/o decompressing it (so the struct is just crap).

I had similar errors previously attempting to merge packages with -flto until I learned that you can tell portage to use the gcc wrappers for ar, ranlib and nm

AR=gcc-ar
NM=gcc-nm
RANLIB=gcc-ranlib

I have this error on two different machines with gentoo built similarly, so I'm not sure what isn't happening in binutils for it to fail, but I presume that this isn't oprofile.



# emerge --info sys-devel/binutils dev-util/oprofile
!!! Repository 'sunrise' has sync-uri attribute, but is missing sync-type attribute
Portage 2.2.18 (python 2.7.9-final-0, default/linux/amd64/13.0/desktop/kde, gcc-4.9.2, glibc-2.20-r2, 3.17.8-gentoo-r1 x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-3.17.8-gentoo-r1-x86_64-Intel-R-_Core-TM-2_Duo_CPU_P7350_@_2.00GHz-with-gentoo-2.2
KiB Mem:     4043108 total,   1668760 free
KiB Swap:    4194300 total,   3845300 free
Timestamp of repository gentoo: Sat, 06 Jun 2015 19:00:01 +0000
sh bash 4.3_p33-r2
ld GNU ld (Gentoo 2.25 p1.0) 2.25
distcc 3.2rc1 x86_64-pc-linux-gnu [disabled]
ccache version 3.2.1 [disabled]
app-shells/bash:          4.3_p33-r2::gentoo
dev-java/java-config:     2.2.0::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.9-r2::gentoo, 3.3.5-r1::gentoo, 3.4.3::gentoo
dev-util/ccache:          3.2.1-r1::gentoo
dev-util/cmake:           3.2.1::gentoo
dev-util/pkgconfig:       0.28-r2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.13.11::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69-r1::gentoo
sys-devel/automake:       1.11.6-r1::gentoo, 1.12.6::gentoo, 1.14.1::gentoo, 1.15::gentoo
sys-devel/binutils:       2.25::gentoo
sys-devel/gcc:            4.8.4::gentoo, 4.9.2::gentoo
sys-devel/gcc-config:     1.8::gentoo
sys-devel/libtool:        2.4.6-r1::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.19::gentoo (virtual/os-headers)
sys-libs/glibc:           2.20-r2::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000

x-portage
    location: /usr/local/portage
    masters: gentoo
    priority: 0

java
    location: /var/lib/layman/java
    masters: gentoo
    priority: 50

rion
    location: /var/lib/layman/rion
    masters: gentoo
    priority: 50

sunrise
    location: /var/lib/layman/sunrise
    sync-uri: git://anongit.gentoo.org/proj/sunrise-reviewed.git
    masters: gentoo
    priority: 50

zugaina
    location: /var/lib/layman/zugaina
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA cadsoft"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -g -pipe -march=native -mtune=native -flto"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -g -pipe -march=native -mtune=native -flto"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="-j1"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs buildpkg candy cgroup compress-build-logs compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles installsources merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms split-elog split-log splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://loudmouth http://gentoo.mirrors.easynews.com/linux/gentoo/ http://gentoo.cites.uiuc.edu/pub/gentoo/ http://www.gtlib.gatech.edu/pub/gentoo"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j1"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/tmp"
USE="7zip X a52 aac aacplus aacs acl acpi aio alsa amd64 apache2 bazaar berkdb bindist bluetooth bluray branding bs2b bzip2 cairo cdda cddb cdio cdr celt clang cli consolekit cracklib crypt cups custom-cflags cvs cxx dbus declarative designer development dirac directfb dot dri dts dvd dvdr emboss encode exif extraengine faac fam ffmpeg fftw firefox flac fluidsynth fontconfig fortran frei0r games gcj gdbm gif git glamor gme gnutls gphoto2 gpm graphviz gsm gstreamer gtk gtk3 hardened highlight iconv ipv6 java jpeg jpeg2k kate kde kdrive kipi ladspa lame lcms ldap libass libcaca libnotify libsamplerate libv4l lto lua lzma lzo mad matroska md5sum mercurial midi mmx mmxext mng modules mp3 mp4 mpeg mtp mudflap multicall multilib multitarget musepack natspec ncurses networkmanager nls nptl nsplugin objc objc++ objc-gc offensive ogg okteta omr openal opencl opengl openmp opus pam pango pch pcre pdf perl phonon plasma playlist png policykit postproc ppds projectm qt3support qt4 qthelp quvi rar readline reviewboard rfc3779 sasl scanner schroedinger sdl seccomp semantic-desktop session sid smp speex spell sqlite sqlite3 sse sse2 ssh ssl startup-notification static-libs subversion svg syslog taglib tcpd theora threads thumbnail tiff tk tools tremor truetype twolame udev udisks unicode upnp upnp-av upower usb utils v4l vaapi vcdx vdpau vim-syntax vlc vorbis vpx wavpack webkit webp wifi wxwidgets x264 x265 xattr xcb xcomposite xft xine xinerama xml xrandr xscreensaver xv xvid xvmc zeroconf zlib zvbi" ABI_X86="64 32" ALSA_CARDS="hda-intel" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd 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 cgi cgid 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" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2 sse3 ssse3 sse4_1" CURL_SSL="gnutls" ELIBC="glibc" FOO2ZJS_DEVICES="hpp1006" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="multiboot pc qemu" INPUT_DEVICES="evdev keyboard mouse joystick wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en_US en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

=================================================================
                        Package Settings
=================================================================

sys-devel/binutils-2.25::gentoo was built with the following:
USE="cxx multitarget nls (policykit) static-libs zlib (-multislot) -test -vanilla" ABI_X86="64"
CFLAGS="-O2 -ggdb -pipe -march=core2 -mtune=core2"
CXXFLAGS="-O2 -ggdb -pipe -march=core2 -mtune=core2"


dev-util/oprofile-1.0.0-r1::gentoo was built with the following:
USE="java pch" ABI_X86="64"
CFLAGS="-O2 -ggdb -pipe -march=core2 -mtune=core2 -mcx16 -msahf -msse4.1 -mfxsr --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=3072"
CXXFLAGS="-O2 -ggdb -pipe -march=core2 -mtune=core2 -mcx16 -msahf -msse4.1 -mfxsr --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=3072"
Comment 1 Nick Clifton 2015-07-16 14:26:11 UTC
Hi Daniel,

  Please could you upload a test binary that demonstrates this problem, so that we can investigate further.

Cheers
  Nick
Comment 2 Marco Leise 2018-04-10 13:48:24 UTC
I have a similar Gentoo setup with binutils 2.29.1 and see the same errors. Removing "compressdebug" from FEATURES during installation of glibc fixed the problem for me.

From the Gentoo documentation:

compressdebug: Compress the debug sections in the split debug files with zlib to save space. Make sure you have built both binutils and gdb with USE=zlib support for this to work. See splitdebug for general split debug information (upon which this feature depends). 


The instructions seem outdated, as neither binutils nor gdb currently offer the "zlib" USE-flag. A USE-flag controls configuration options and dependencies of a package about to be compiled and installed on Gentoo. Maybe it is auto-detected now. In any case zlib is installed.
This was the patch that introduced "compressdebug" in Gentoo:
https://archives.gentoo.org/gentoo-portage-dev/message/fabff63fccb0bce10b4f93fcf4acf3e1
You can see the compiler/linker flags used to make it work.
Comment 3 Marco Leise 2018-04-10 14:00:35 UTC
Created attachment 10938 [details]
Compressed glibc amd64 debug information from a Gentoo system.
Comment 4 Nick Clifton 2018-04-11 10:04:00 UTC
Hi Marco,

> I have a similar Gentoo setup with binutils 2.29.1 and see the same errors.

This is surprising.

> The instructions seem outdated, as neither binutils nor gdb currently offer
> the "zlib" USE-flag. A USE-flag controls configuration options and
> dependencies of a package about to be compiled and installed on Gentoo.
> Maybe it is auto-detected now. 

Yes, it is.

I ran the debug files in the tarball you uploaded through objdump (which
uses the BFD library) and readelf (which does not) from the 2.29 binutils
release, and they were able to display the debug information without any
problems.  (Admittedly this was using the Fedora 27 binutils, not Gentoo).

I did not try using oprofile, but that is because I do not know how to use
it.  Do you have an example command line that I could try ?

Detection of compressed sections relies upon a special bit in the ELF 
section header flags (SHF_COMPRESSED).  Is it possible that oprofile is
somehow stripping this bit out, before calling the BFD routines ?
 
Cheers
  Nick
Comment 5 Marco Leise 2018-04-12 09:41:03 UTC
I use this for callgraphs:

operf --vmlinux /usr/src/linux/vmlinux --callgraph ./app_to_be_profiled
opreport -c%g -t=0.1% -p=/lib/modules/`uname -r`/kernel/,/lib/modules/`uname -r`/video/

And this for detailed samples:

operf --vmlinux /usr/src/linux/vmlinux ./app_to_be_profiled
opreport -gd%rl -t=1% -p=/lib/modules/`uname -r`/kernel/,/lib/modules/`uname -r`/video/

The app needs no instrumentation other than - of course - debug information and should dynamically link with libc. (OProfile also displays time spent in the kernel, so I added the path to the uncompressed vmlinux and modules.) Hope that helps!
Comment 6 Nick Clifton 2018-04-30 16:35:17 UTC
(In reply to Marco Leise from comment #5)
Hi Marco,

> Hope that helps!

Sorry - I have not been able to get anywhere with this. :-(

Are you able to test the newer release of the binutils (2.30) to see if the problem exists there too ?

My gut feeling is that this is not a binutils bug at all, but that something
is producing corrupt dwarf binaries instead.  Of course I cannot prove this,
which is why I would like to investigate.  But so far I cannot reproduce the
problem. :-(

Cheers
  Nick
Comment 7 Marco Leise 2018-05-01 20:56:57 UTC
I am actually using a git checkout past 2.30 right now and the issue is still present. What is the command line you use for objdump? I.e. is there a way to make it print source lines for symbols as oprofile would?
Comment 8 Nick Clifton 2018-05-15 15:24:36 UTC
(In reply to Marco Leise from comment #7)

[Sorry for the long delay in responding...]

> I am actually using a git checkout past 2.30 right now and the issue is
> still present. 

Darn.

> What is the command line you use for objdump?

objdump -W <file>

>  I.e. is there a
> way to make it print source lines for symbols as oprofile would?

objdump -WL <file>

I doubt if this is the same as oprofile will produce, but both tools
will be displaying processed DWARF line number information so they
should be roughly equivalent.  You can also use "objdump -Wl <file>"
(with a lowercase-l rather than an uppercase-L) to see the raw DWARF
debug line information.

Cheers
  Nick
Comment 9 Alan Modra 2018-05-17 08:34:04 UTC
Since this is a bug about oprofile, a relevant question is: What version of the bfd library is oprofile using?

Note that installing a new binutils with a new libbfd.so will not (and should not) update the version used by oprofile even if oprofile is using a shared libbfd.so.  If oprofile is using a libbfd.so shared library and you've forced an update, then all sorts of things can go wrong because the libbfd ABI is not stable..
Comment 10 Marco Leise 2018-05-21 11:56:09 UTC
(In reply to Alan Modra from comment #9)
> Since this is a bug about oprofile, a relevant question is: What version of
> the bfd library is oprofile using?

opreport is linked against libbfd-2.30.0.so and behaves the same when compiled against libbfd-2.29.1.

(In reply to Nick Clifton from comment #8)
> objdump -WL <file>
> 
> I doubt if this is the same as oprofile will produce, but both tools
> will be displaying processed DWARF line number information so they
> should be roughly equivalent.

The objdump output looks fine. Does that mean the issue has to be in Oprofile?