[UBUNTU] - glibc: z15 (s390x) strstr implementation can return incorrect result if search string cross page boundary

This bug was fixed in the package glibc - 2.30-0ubuntu3

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glibc (2.30-0ubuntu3) focal; urgency=medium

  * Cherrypick upstream fix for strstr on s390x z15. LP: #1854326

 -- Dimitri John Ledkov <email address hidden> Fri, 29 Nov 2019 14:19:57 +0000

------- Comment From <email address hidden> 2019-12-17 04:21 EDT-------
Hi,

I've installed Ubuntu 20.04 with glibc (2.30-0ubuntu3) and checked that the fix is included.
Thanks.

Will this fix also be available for Ubuntu 19.10 where this z15 strstr ifunc variant is also available?

Hello bugproxy, or anyone else affected,

Accepted glibc into eoan-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/glibc/2.30-0ubuntu2.1 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 and change the tag from verification-needed-eoan to verification-done-eoan. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-eoan. 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.

------- Comment From <email address hidden> 2020-02-10 11:34 EDT-------
Comment from IBM Dev:
I've installed Ubuntu 19.10 with libc6/eoan-proposed 2.30-0ubuntu2.1 and checked with an own test-program that the fix is included.
--> verfied

Many thx for the verification - I'm adjusting the tags accordingly.

That i386 build failure in eoan-proposed is quite annoying:

https://launchpad.net/ubuntu/+source/glibc/2.30-0ubuntu2.1/+build/18674640

Makes build-essential uninstallable for example...

"That i386 build failure in eoan-proposed is quite annoying"

More than just that, it makes things like Steam and Wine 32 bit libs uninstallable.

is 2.30-0ubuntu3 from "The Focal Fossa" a drop in replacement?

yes i have same problem, Wine is no longer working, and if i reinstall Wine than it breaks my nvidia-340 driver. It took me 2 days to downgrade glibc from 2.30-0ubuntu2.1 to 2.30-0ubuntu2 all is working fine again but "Software Updater" now complains that not all updates can be installed and asks me to run a partial upgrade.

I have no problem on my ubuntu installation.

But this file with another one (or more) of GNU C are still not ready to be updated.

I am waiting for days now. This situation begins to worry.

I hope to see every problem solved soon.

------- Comment From <email address hidden> 2020-02-17 02:51 EDT-------
It's unclear to me, why a s390x-only change leads to i386 fails.
Have you just backported the single commit or have you done further changes (further commits / sync from Ubuntu 19.10 to Ubuntu 20.04 libc6-package / package files)?

Ok, so I have re-triggered the i386 build and this time it built correctly, so the i386-caused issues should have disappeared. I will be releasing the SRU if everything seems to work properly now.

All autopkgtests for the newly accepted glibc (2.30-0ubuntu2.1) for eoan have finished running.
The following regressions have been reported in tests triggered by the package:

syncthing/1.1.4~ds1-4 (i386)
libscalar-util-numeric-perl/0.40-1build4 (armhf)
resource-agents/1:4.2.0-1ubuntu2 (armhf)
libdevice-cdio-perl/unknown (armhf)
libperlio-eol-perl/unknown (armhf)
heaptrack/1.1.0+20180922.gitf752536-4 (armhf)
timew/1.1.1+ds.1-1 (armhf)
donkey/1.2.0-4 (armhf)
zope.interface/unknown (armhf)
smcroute/2.4.2-4 (i386)
libcompress-raw-zlib-perl/2.087-1 (armhf)
fclib/3.0.0+dfsg-2build1 (s390x)
gemma/0.98.1+dfsg-1 (armhf)
feersum/1.407-1 (arm64)
yorick/unknown (armhf)
r-cran-msm/1.6.7-1 (ppc64el)
mercurial/4.8.2-1ubuntu4 (armhf)
libposix-2008-perl/0.16-1build1 (armhf)
r-cran-bitops/unknown (armhf)
systemd/242-7ubuntu3.7 (i386)
libtext-metaphone-perl/unknown (armhf)
libimage-sane-perl/0.14-1build3 (s390x)
libclass-methodmaker-perl/2.24-1build5 (armhf)
morbig/unknown (i386)
protobuf/unknown (armhf)
libterm-size-perl/0.209-1build1 (armhf)
natsort/6.0.0-1 (ppc64el, s390x, armhf, i386, amd64, arm64)
mysql-8.0/8.0.19-0ubuntu0.19.10.3 (i386, amd64, arm64)
octave-ltfat/unknown (armhf)
libreoffice/1:6.3.4-0ubuntu0.19.10.1 (armhf, arm64)
libmsgcat-perl/1.03-7build1 (armhf)
libnet-ssleay-perl/1.88-0ubuntu1 (i386)
libkcddb/4:19.04.3-0ubuntu1 (ppc64el, s390x, armhf, i386, amd64, arm64)
libstring-similarity-perl/1.04-2build1 (armhf)
libbit-vector-perl/7.4-1build5 (i386)
snpomatic/1.0-4 (i386)
wireguard/0.0.20190913-1ubuntu1 (i386, ppc64el, armhf, amd64, s390x)
sbd/1.4.0-18-g5e3283c-1ubuntu1 (amd64)
rtags/2.33-2 (i386)
iproute2/unknown (armhf)
openssh/1:8.0p1-6build1 (ppc64el, s390x, armhf, i386, amd64, arm64)
ruby-nokogumbo/unknown (armhf)
ruby-libxml/3.1.0-1 (s390x)
mpi4py/3.0.2-13 (armhf)
libunix-syslog-perl/1.1-3build1 (armhf)
python3-lxc/1:3.0.4-1ubuntu3 (i386, amd64)
smalt/0.7.6-8 (i386)
ikiwiki-hosting/0.20180719-1build1 (armhf)
pango1.0/1.42.4-7 (amd64)
apache2/2.4.41-1ubuntu1 (armhf)
ignition-math2/unknown (armhf)
tdb/unknown (armhf)
segyio/unknown (armhf)
aspcud/unknown (armhf)
libhttp-parser-xs-perl/unknown (armhf)
openjdk-8/8u242-b08-0ubuntu3~19.10 (armhf)
ruby-mysql2/0.5.2-1ubuntu2 (armhf)
pg-snakeoil/1.1-1build1 (ppc64el, s390x, armhf, i386, amd64, arm64)
libpar-packer-perl/1.047-1build1 (armhf)
r-cran-processx/3.4.1-1 (s390x)
libcrypt-rijndael-perl/unknown (armhf)
libcrypt-openssl-dsa-perl/0.19-1build3 (armhf)
libsys-cpu-perl/0.61-2build3 (armhf)
libautovivification-perl/unknown (armhf)
libhtml-strip-perl/unknown (armhf)
lxc/3.0.4-0ubuntu1 (amd64)
exonerate/unknown (armhf)
gvfs/1.42.1-1ubuntu1 (amd64, arm64)
subvertpy/unknown (armhf)
libperlio-utf8-strict-perl/unknown (armhf)
gcc-snapshot/1:20191008-1ubuntu1 (armhf)
libuv1/unknown (armhf)
ruby-rblineprof/0.3.7-2 (armhf)
libencode-hanextra-perl/0.23-5build1 (armhf)
r-bioc-delayedarray/0.10.0+dfsg-1 (armhf)
tracker/2.3.0-1 (armhf)
libyaml-libyaml-perl/0.80+repack-1 (armhf)
knotifyconfig/unknown (armhf)
r-cran-geepack/unknown (armhf)
libfuture-asyncawait-perl/0.32-1 (arm64)
pyzmq/17.1.2-3ubuntu1 (amd64, arm64)
ncurses/unknown (armhf)
flog/unknown (armhf)
openjdk-lts/blacklisted (arm64)
reprotest/0.7.9 (i...

This bug was fixed in the package glibc - 2.30-0ubuntu2.1

---------------
glibc (2.30-0ubuntu2.1) eoan; urgency=medium

  * Cherrypick upstream fix for strstr on s390x z15. LP: #1854326

 -- Dimitri John Ledkov <email address hidden> Fri, 29 Nov 2019 14:19:57 +0000

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.

------- Comment From <email address hidden> 2020-02-28 04:17 EDT-------
IBM Bugzilla status -> closed, Fix Released by all requested distros.