ld-2.31.so is not correctly packaged in libc6-dbg

Fixed in 2.33-0ubuntu6.

Hi, thanks for reporting and for fixing this! Unfortunately, I'm on Ubuntu 21.04 where the fix hasn't arrived yet as we're still on 2.33-0ubuntu5 [1], and I was wondering if it could be possible to release at least the update to 2.33-0ubuntu6 in there as well, so that we can have sane stack traces again without waiting for the 21.10 release (which I see already have 2.33-0ubuntu9 [2]).

WDYT? Would that be possible?

Thanks in advance!

[1] https://packages.ubuntu.com/source/hirsute/glibc
[2] https://packages.ubuntu.com/source/impish/glibc

Hello Ppluzhnikov-google, or anyone else affected,

Accepted glibc into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.4 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

All autopkgtests for the newly accepted glibc (2.31-0ubuntu9.4) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

snapd-glib/1.58-0ubuntu0.20.04.0 (armhf)
apt/2.0.6 (armhf)
libmath-mpfr-perl/4.13-1 (armhf)
art-nextgen-simulation-tools/20160605+dfsg-4 (armhf)
ruby-nokogiri/1.10.7+dfsg1-2build1 (armhf)
r-cran-rgdal/1.4-8-1build2 (armhf)
arrayfire/3.3.2+dfsg1-4ubuntu4 (armhf)
libpango-perl/1.227-3build1 (armhf)
libimage-sane-perl/5-1 (s390x)
ruby-bootsnap/1.4.6-1 (arm64)
mle/1.4.3-1 (ppc64el, arm64)
libsyntax-keyword-try-perl/0.11-1build1 (armhf)
awesome/4.3-4 (armhf)
cysignals/1.10.2+ds-4 (arm64)
gvfs/1.44.1-1ubuntu1 (ppc64el)
libuv1/1.34.2-1ubuntu1.3 (amd64)
bali-phy/3.4.1+dfsg-2build1 (arm64, s390x)
g10k/0.5.7-1 (armhf)
litl/0.1.9-7 (amd64)
ruby-libxml/3.1.0-2 (armhf)
ffmpeg/7:4.2.4-1ubuntu0.1 (armhf)
yorick/2.2.04+dfsg1-10 (ppc64el, s390x)
linux-ibm/5.4.0-1010.11 (amd64)
liborcus/0.15.3-3build2 (armhf)
node-nodedbi/1.0.13+dfsg-1build1 (amd64)
r-bioc-delayedarray/0.12.2+dfsg-1 (armhf)
postgresql-unit/7.2-2 (armhf)
python-freecontact/1.1-5build2 (armhf)
r-cran-rwave/2.4-8-2 (armhf)
libproc-fastspawn-perl/1.2-1build2 (armhf)
linux-hwe-5.11/5.11.0-44.48~20.04.2 (armhf)
foo2zjs/20171202dfsg0-4 (armhf)
r-cran-erm/1.0-0-1 (armhf)
libsys-cpuload-perl/0.03-8build5 (armhf)
libhttp-parser-xs-perl/0.17-1build5 (armhf)
php-luasandbox/3.0.3-2build2 (armhf)
pynfft/1.3.2-3build1 (armhf)
r-cran-processx/3.4.2-1 (ppc64el)
r-bioc-multtest/2.42.0-1 (armhf)
linux-hwe-5.13/5.13.0-23.23~20.04.2 (armhf)
python-blosc/1.7.0+ds1-2ubuntu2 (armhf)
gyoto/1.4.4-3 (armhf)
r-cran-sem/3.1.9-2build1 (armhf)
libtext-reflow-perl/1.17-1build3 (armhf)
python3.9/3.9.5-3ubuntu0~20.04.1 (armhf)
r-cran-samr/3.0-1 (armhf)
r-cran-dplyr/0.8.4-1 (armhf)
python3.8/3.8.10-0ubuntu1~20.04.2 (armhf)
findent/3.1.1-1build1 (armhf)
mercurial/5.3.1-1ubuntu1 (amd64)
libmemcached-libmemcached-perl/1.001801+dfsg-2build4 (armhf)
openbabel/3.0.0+dfsg-3ubuntu3 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#glibc

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

Verified:

root@focal:~# dpkg-query -W libc6
libc6:amd64 2.31-0ubuntu9.2
root@focal:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date

Program stopped.
0x00007ffff7fd0100 in ?? () from /lib64/ld-linux-x86-64.so.2
(gdb) br _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11d0
(gdb) c
Continuing.

Breakpoint 1, 0x00007ffff7fe11d0 in _dl_debug_state () from /lib64/ld-linux-x86-64.so.2
(gdb) bt
#0 0x00007ffff7fe11d0 in _dl_debug_state () from /lib64/ld-linux-x86-64.so.2
#1 0x00007ffff7fd2fd1 in ?? () from /lib64/ld-linux-x86-64.so.2
#2 0x00007ffff7febc3b in ?? () from /lib64/ld-linux-x86-64.so.2
#3 0x00007ffff7fd104c in ?? () from /lib64/ld-linux-x86-64.so.2
#4 0x00007ffff7fd0108 in ?? () from /lib64/ld-linux-x86-64.so.2
#5 0x0000000000000001 in ?? ()
#6 0x00007fffffffe8f2 in ?? ()
#7 0x0000000000000000 in ?? ()
root@focal:~# apt install -qq libc6/focal-proposed libc-bin/focal-proposed locales/focal-proposed libc6-dev/focal-proposed libc6-dbg/focal-proposed libc-dev-bin/focal-proposed
[...]
root@focal:~# dpkg-query -W libc6
libc6:amd64 2.31-0ubuntu9.4
root@focal:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date

Program stopped.
0x00007ffff7fd0100 in _start () from /lib64/ld-linux-x86-64.so.2
(gdb) b _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11e0: file dl-debug.c, line 73.
(gdb) c
Continuing.

Breakpoint 1, __GI__dl_debug_state () at dl-debug.c:73
73 dl-debug.c: No such file or directory.
(gdb) bt
#0 __GI__dl_debug_state () at dl-debug.c:73
#1 0x00007ffff7fd2fd1 in dl_main (phdr=<optimized out>, phnum=<optimized out>, user_entry=<optimized out>, auxv=<optimized out>) at rtld.c:1661
#2 0x00007ffff7febc4b in _dl_sysdep_start (start_argptr=start_argptr@entry=0x7fffffffe700, dl_main=dl_main@entry=0x7ffff7fd15e0 <dl_main>) at ../elf/dl-sysdep.c:252
#3 0x00007ffff7fd104c in _dl_start_final (arg=0x7fffffffe700) at rtld.c:449
#4 _dl_start (arg=0x7fffffffe700) at rtld.c:539
#5 0x00007ffff7fd0108 in _start () from /lib64/ld-linux-x86-64.so.2
#6 0x0000000000000001 in ?? ()
#7 0x00007fffffffe8f2 in ?? ()
#8 0x0000000000000000 in ?? ()

Hello Ppluzhnikov-google, or anyone else affected,

Accepted glibc into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.5 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

All autopkgtests for the newly accepted glibc (2.31-0ubuntu9.5) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

garli/2.1-3build1 (armhf)
fpc/3.0.4+dfsg-23 (armhf)
lazarus/2.0.6+dfsg-3 (armhf)
libuv1/1.34.2-1ubuntu1.3 (i386)
ikiwiki-hosting/0.20180719-2 (armhf)
rtags/2.37-1 (amd64)
mercurial/5.3.1-1ubuntu1 (amd64, ppc64el)
foo2zjs/20171202dfsg0-4 (armhf)
frameworkintegration/5.68.0-0ubuntu1 (armhf)
hilive/2.0a-3build2 (arm64)
ruby-libxml/3.1.0-2 (s390x)
plasma-framework/5.68.0-0ubuntu1 (armhf)
feersum/1.407-2 (s390x)
r-bioc-delayedarray/0.12.2+dfsg-1 (armhf)
php-luasandbox/3.0.3-2build2 (ppc64el)
snapd-glib/1.58-0ubuntu0.20.04.0 (armhf)
bolt/0.8-4ubuntu1 (ppc64el)
threadweaver/5.68.0-0ubuntu1 (armhf)
python3.8/3.8.10-0ubuntu1~20.04.2 (amd64)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#glibc

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

Hello Ppluzhnikov-google, or anyone else affected,

Accepted glibc into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.8 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

All autopkgtests for the newly accepted glibc (2.31-0ubuntu9.8) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

ruby-stackprof/0.2.15-2 (arm64)
sphinxbase/0.8+5prealpha+1-8 (armhf)
r-cran-ps/1.3.2-2 (s390x)
linux-hwe-5.13/5.13.0-37.42~20.04.1 (armhf)
mercurial/5.3.1-1ubuntu1 (armhf, ppc64el)
linux-hwe-5.11/5.11.0-61.61 (armhf)
mbedtls/2.16.4-1ubuntu2 (s390x)
libreoffice/1:6.4.7-0ubuntu0.20.04.4 (armhf)
ruby-ferret/0.11.8.7-2 (amd64)
cross-toolchain-base/43ubuntu3.1 (ppc64el)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#glibc

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

Hello Ppluzhnikov-google, or anyone else affected,

Accepted glibc into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.9 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

All autopkgtests for the newly accepted glibc (2.31-0ubuntu9.9) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

hilive/2.0a-3build2 (arm64)
tomb/2.7+dfsg2-1 (arm64)
linux-hwe-5.13/5.13.0-40.45~20.04.1 (armhf)
bali-phy/3.4.1+dfsg-2build1 (s390x, arm64)
smalt/0.7.6-9 (ppc64el)
mariadb-10.3/1:10.3.34-0ubuntu0.20.04.1 (armhf)
feersum/1.407-2 (s390x)
kopanocore/8.7.0-7ubuntu1 (amd64)
r-cran-ps/1.3.2-2 (s390x, ppc64el)
libreoffice/1:6.4.7-0ubuntu0.20.04.4 (amd64)
imagemagick/8:6.9.10.23+dfsg-2.1ubuntu11.4 (armhf)
ruby-stackprof/0.2.15-2 (amd64)
gnome-photos/3.34.1-1 (ppc64el)
linux-azure-5.11/5.11.0-1029.32~20.04.2 (amd64)
linux-intel-5.13/5.13.0-1010.10 (amd64)
php-luasandbox/3.0.3-2build2 (armhf, arm64)
mbedtls/2.16.4-1ubuntu2 (amd64, ppc64el)
cross-toolchain-base/43ubuntu3.1 (ppc64el)
rtags/2.37-1 (amd64)
gvfs/1.44.1-1ubuntu1 (arm64, ppc64el)
linux-oem-5.14/5.14.0-1033.36 (amd64)
linux-azure-cvm/5.4.0-1076.79+cvm1 (amd64)
mercurial/5.3.1-1ubuntu1 (armhf)
r-cran-satellite/1.0.2-1build1 (armhf)
s3ql/3.3.2+dfsg-1ubuntu1 (armhf)
snapd/2.54.3+20.04.1ubuntu0.2 (s390x, arm64, amd64, ppc64el)
sphinxbase/0.8+5prealpha+1-8 (armhf)
gemma/0.98.1+dfsg-1 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#glibc

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

verified:

root@focal-vm:~# dpkg -l libc6-dbg | grep ^ii
ii libc6-dbg:amd64 2.31-0ubuntu9.7 amd64 GNU C Library: detached debugging symbols
root@focal-vm:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date

Program stopped.
0x00007ffff7fd0100 in ?? () from /lib64/ld-linux-x86-64.so.2
(gdb) br _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11d0
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/date

Breakpoint 1, 0x00007ffff7fe11d0 in _dl_debug_state () from /lib64/ld-linux-x86-64.so.2
(gdb) bt
#0 0x00007ffff7fe11d0 in _dl_debug_state () from /lib64/ld-linux-x86-64.so.2
#1 0x00007ffff7fd2fd1 in ?? () from /lib64/ld-linux-x86-64.so.2
#2 0x00007ffff7febc3b in ?? () from /lib64/ld-linux-x86-64.so.2
#3 0x00007ffff7fd104c in ?? () from /lib64/ld-linux-x86-64.so.2
#4 0x00007ffff7fd0108 in ?? () from /lib64/ld-linux-x86-64.so.2
#5 0x0000000000000001 in ?? ()
#6 0x00007fffffffe8e9 in ?? ()
#7 0x0000000000000000 in ?? ()
(gdb) quit
A debugging session is active.

 Inferior 1 [process 13368] will be killed.

Quit anyway? (y or n) y
root@focal-vm:~# apt install --allow-downgrades -t focal-proposed libc6-dbg
[...]
Unpacking libc6-dbg:amd64 (2.31-0ubuntu9.9) over (2.31-0ubuntu9.7) ...
[...]

root@focal-vm:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date

Program stopped.
0x00007ffff7fd0100 in _start () from /lib64/ld-linux-x86-64.so.2
(gdb) br _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11e0: file dl-debug.c, line 73.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) n
Program not restarted.
(gdb) c
Continuing.

Breakpoint 1, __GI__dl_debug_state () at dl-debug.c:73
73 dl-debug.c: No such file or directory.
(gdb) bt
#0 __GI__dl_debug_state () at dl-debug.c:73
#1 0x00007ffff7fd2fd1 in dl_main (phdr=<optimized out>, phnum=<optimized out>, user_entry=<optimized out>, auxv=<optimized out>) at rtld.c:1661
#2 0x00007ffff7febc4b in _dl_sysdep_start (start_argptr=start_argptr@entry=0x7fffffffe6f0, dl_main=dl_main@entry=0x7ffff7fd15e0 <dl_main>) at ../elf/dl-sysdep.c:252
#3 0x00007ffff7fd104c in _dl_start_final (arg=0x7fffffffe6f0) at rtld.c:449
#4 _dl_start (arg=0x7fffffffe6f0) at rtld.c:539
#5 0x00007ffff7fd0108 in _start () from /lib64/ld-linux-x86-64.so.2
#6 0x0000000000000001 in ?? ()
#7 0x00007fffffffe8e9 in ?? ()
#8 0x0000000000000000 in ?? ()
(gdb) Quit

The verification of the Stable Release Update for glibc has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package glibc - 2.31-0ubuntu9.9

---------------
glibc (2.31-0ubuntu9.9) focal; urgency=medium

  * Disable testsuite on riscv64. It is failing maths tests intermittently in
    ways that cannot be a glibc regression and is disabled in later series
    anyway.

glibc (2.31-0ubuntu9.8) focal; urgency=medium

  * Update for 20.04. (LP: #1951033)

  [ Balint Reczey ]
  * Cherry-pick upstream patch to fix building with -moutline-atomics
  * Prevent rare deadlock in pthread_cond_signal (LP: #1899800)

  [ Matthias Klose ]
  * Revert: Use DH_COMPAT=8 for dh_strip to fix debug sections for valgrind.
    Enables debugging ld.so related issues. (LP: #1918035)
  * Don't strip ld.so on armhf. (LP: #1927192)

  [ Gunnar Hjalmarsson ]
  * d/local/usr_sbin/update-locale: improve sanity checks. (LP: #1892825)

  [ Heitor Alves de Siqueira ]
  * d/p/u/git-lp1928508-reversing-calculation-of-__x86_shared_non_temporal.patch:
    - Fix memcpy() performance regression on x86 AMD systems (LP: #1928508)

  [ Aurelien Jarno ]
  * debian/debhelper.in/libc.preinst: drop the check for kernel release
    > 255 now that glibc and preinstall script are fixed. (LP: #1962225)

  [ Michael Hudson-Doyle ]
  * libc6 on arm64 is now built with -moutline-atomics so libc6-lse can now be
    an empty package that is safe to remove. (LP: #1912652)
  * d/patches/u/aarch64-memcpy-improvements.patch: Backport memcpy
    improvements. (LP: #1951032)
  * Add test-float64x-yn to xfails on riscv64.

 -- Michael Hudson-Doyle <email address hidden> Thu, 07 Apr 2022 13:24:41 +1200

libc6-dbg (2.31-0ubuntu9.9) is broken. No ld-2.31.so exists:

$ dpkg -L libc6-dbg | grep /ld-2.31; echo $?
1

re-opening

Any news on this?

Status changed to 'Confirmed' because the bug affects multiple users.

Any news on this?

This has actually been fixed in 2.31-0ubuntu9.9, but the fix is to switch away from the old filename-based pattern to the build-id system, which means you won't be able to find using `dpkg -L libc6-dbg | grep /ld-2.31`. You can find the build ID using eu-readelf:

$ eu-readelf -n /lib/x86_64-linux-gnu/ld-2.31.so | grep 'Build ID'
    Build ID: 4587364908de169dec62ffa538170118c1c3a078
$ dpkg -L libc6-dbg | grep 87364908de169dec62ffa538170118c1c3a078 # strip the first 2 chars as they're in the dir name
/usr/lib/debug/.build-id/45/87364908de169dec62ffa538170118c1c3a078.debug

Marking as Fix Released.