[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Launchpad Bug Tracker]

This bug was fixed in the package util-linux - 2.28.2-1ubuntu1.1

---
util-linux (2.28.2-1ubuntu1.1) yakkety; urgency=medium

  * Cherrypick upstream fix to prevent segfaults in getopt by ensuring
that options array is correctly terminated. LP: #1577460

 -- Dimitri John Ledkov   Fri, 16 Dec 2016 14:27:53
+

** Changed in: util-linux (Ubuntu Yakkety)
   Status: Fix Committed => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: Fix Committed => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Launchpad Bug Tracker]

This bug was fixed in the package util-linux - 2.27.1-6ubuntu3.2

---
util-linux (2.27.1-6ubuntu3.2) xenial; urgency=medium

  * Cherrypick upstream fix to prevent segfaults in getopt by ensuring
that options array is correctly terminated. LP: #1577460

 -- Dimitri John Ledkov   Fri, 16 Dec 2016 14:49:06
+

** Changed in: util-linux (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

Reproduced the crash in xenial and yakkety schroots; observed that
updating util-linux to version from proposed resolves the issue as per
test case.

** Tags removed: verification-failed
** Tags added: verification-done

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: In Progress => Fix Committed

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Andy Whitcroft]

Hello bugproxy, or anyone else affected,

Accepted util-linux into yakkety-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/util-
linux/2.28.2-1ubuntu1.1 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 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 to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

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

** Changed in: util-linux (Ubuntu Yakkety)
   Status: In Progress => Fix Committed

** Changed in: util-linux (Ubuntu Xenial)
   Status: In Progress => Fix Committed

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

** Changed in: util-linux (Ubuntu Xenial)
   Status: Triaged => In Progress

** Changed in: util-linux (Ubuntu Yakkety)
   Status: Triaged => In Progress

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

Fix for util-linux is staged in the bileto PPA, currently undergoing
testing.

https://bileto.ubuntu.com/#/ticket/2309

Fix is available during this time from ephemeral PPA at
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/2309

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

** Changed in: util-linux (Ubuntu)
   Status: Triaged => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

glibc (2.24-3ubuntu1) yakkety; urgency=medium

  * Merge with 2.24 from Debian sid, bringing in minor packaging changes and
upstream updates, including the security fix for CVE-2016-6323 on ARMv7.
  * debian/patches/ubuntu/local-altlocaledir.diff: Updated to latest version
from Martin that limits scope to LC_MESSAGES, fixing segv (LP: #1577460)
  * debian/testsuite-xfail-debian.mk: Allow nptl/tst-signal6 to fail on ARM.

 -- Adam Conrad   Wed, 05 Oct 2016 14:25:57 -0600

** Description changed:

+ [Testcase]
+ * $ LC_ALL=fo_FOO.UTF-8 getopt -o c:d:ko:r:v -n /usr/sbin/mkinitramfs -- 
--help
+ Expected result:
+   /usr/sbin/mkinitramfs: unrecognized option '--help'
+--
+   Exit code 1
+ Current result:
+   Segmentation fault
+   Exit code 139.
+ 
+ There are two bugs in play here. glibc bug was fixed, and util-linux bug
+ needs an upload still.
+ 
  Problem Description
  ==
  root@zlin060:~# mkinitramfs --help
  Segmentation fault (core dumped)
  W: non-GNU getopt
  root@zlin060:~#
  
  == Comment: #9 - Heinz-Werner Seeck  - 
2016-05-02 10:09:34 ==
  With Ubuntu 14.40 login via ssh:
  
  Following cmd :
  'getopt -o c:d:ko:r:v -n /usr/sbin/mkinitramfs -- --help'
  
  Following call-stack occured (creates coredump):
  
- #0  __strncmp_c (s1=0x2e6575634a500a6d , 
- s1@entry=0x2e6575634a500a6a , 
- s2=0x3fff7fff7ae "p", s2@entry=0x3fff7fff7ab "gelp", n=n@entry=4) at 
../string/strncmp.c:44
- #1  0x03ff7e9d4252 in _getopt_internal_r (argc=, 
argv=0x40, 
- optstring=0x20030 , longopts=, 
- longind=, long_only=0, d=0x3ff7ea8c330 , 
posixly_correct=0) at getopt.c:546
- #2  0x03ff7e9d51f2 in _getopt_internal (argc=, 
argv=, 
- optstring=, longopts=, 
longind=0x3fff7ffe674, long_only=0, posixly_correct=0)
- at getopt.c:1175
- #3  0x03ff7e9d52b6 in getopt_long (argc=, argv=, options=, 
- long_options=, opt_index=0x3fff7ffe674) at getopt1.c:65
+ #0  __strncmp_c (s1=0x2e6575634a500a6d ,
+ s1@entry=0x2e6575634a500a6a ,
+ s2=0x3fff7fff7ae "p", s2@entry=0x3fff7fff7ab "gelp", n=n@entry=4) at 
../string/strncmp.c:44
+ #1  0x03ff7e9d4252 in _getopt_internal_r (argc=, argv=0x40,
+ optstring=0x20030 , longopts=,
+ longind=, long_only=0, d=0x3ff7ea8c330 , 
posixly_correct=0) at getopt.c:546
+ #2  0x03ff7e9d51f2 in _getopt_internal (argc=, 
argv=,
+ optstring=, longopts=, 
longind=0x3fff7ffe674, long_only=0, posixly_correct=0)
+ at getopt.c:1175
+ #3  0x03ff7e9d52b6 in getopt_long (argc=, argv=, options=,
+ long_options=, opt_index=0x3fff7ffe674) at getopt1.c:65
  #4  0x02aa236821d8 in ?? ()
  #5  0x02aa23681c22 in main ()

** Changed in: util-linux (Ubuntu)
   Status: New => Triaged

** Changed in: util-linux (Ubuntu)
   Importance: Undecided => High

** Changed in: util-linux (Ubuntu)
 Assignee: (unassigned) => Dimitri John Ledkov (xnox)

** Changed in: util-linux (Ubuntu)
Milestone: None => ubuntu-17.01

** Changed in: util-linux (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: util-linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: util-linux (Ubuntu Xenial)
 Assignee: (unassigned) => Dimitri John Ledkov (xnox)

** Changed in: util-linux (Ubuntu Xenial)
Milestone: None => ubuntu-16.04.2

** Also affects: util-linux (Ubuntu Yakkety)
   Importance: Undecided
   Status: New

** Also affects: glibc (Ubuntu Yakkety)
   Importance: Undecided
   Status: New

** Changed in: glibc (Ubuntu Yakkety)
   Status: New => Fix Released

** Changed in: util-linux (Ubuntu Yakkety)
   Status: New => Triaged

** Changed in: util-linux (Ubuntu Yakkety)
   Importance: Undecided => High

** Changed in: util-linux (Ubuntu Yakkety)
 Assignee: (unassigned) => Dimitri John Ledkov (xnox)

** Changed in: util-linux (Ubuntu Yakkety)
Milestone: None => yakkety-updates

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Ubuntu Foundations Team Bug Bot]

The attachment "fixed debian/patches/ubuntu/local-altlocaledir.diff"
seems to be a patch.  If it isn't, please remove the "patch" flag from
the attachment, remove the "patch" tag, and if you are a member of the
~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issues please contact him.]

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: Fix Released => In Progress

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: Fix Committed => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Launchpad Bug Tracker]

This bug was fixed in the package glibc - 2.23-0ubuntu4

---
glibc (2.23-0ubuntu4) xenial; urgency=medium

  * debian/rules.d/tarball.mk: Apply --no-renames to make the diff readable.
  * debian/patches/git-updates.diff: Update from release/2.23/master branch:
- Include fix for potential makecontext() hang on ARMv7 (CVE-2016-6323)
- Include fix for SEGV in sock_eq with nss_hesiod module (LP: #1571456)
- Include malloc fixes, addressing multithread deadlocks (LP: #1630302)
- debian/patches/hurd-i386/cvs-libpthread.so.diff: Dropped, upstreamed.
- debian/patches/any/submitted-argp-attribute.diff: Dropped, upstreamed.
- debian/patches/hurd-i386/tg-hurdsig-fixes-2.diff: Rebased to upstream.
  * debian/patches/ubuntu/local-altlocaledir.diff: Updated to latest version
from Martin that limits scope to LC_MESSAGES, fixing segv (LP: #1577460)
  * debian/patches/any/cvs-cos-precision.diff: Fix cos() bugs (LP: #1614966)
  * debian/testsuite-xfail-debian.mk: Allow nptl/tst-signal6 to fail on ARM.

 -- Adam Conrad   Fri, 14 Oct 2016 00:00:34 -0600

** Changed in: glibc (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Anders Kaseorg]

Upstream applied an equivalent patch:
http://git.kernel.org/cgit/utils/util-linux/util-linux.git/commit/?id=e1164591f7927402af8d73d340e75dbfeb06a288

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Anders Kaseorg]

This is a util-linux bug, not a glibc bug.  I have sent this patch
upstream.

** Also affects: util-linux (Ubuntu)
   Importance: Undecided
   Status: New

** Patch added: 
"0001-getopt-Terminate-long_options-even-if-add_long_optio.patch"
   
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1577460/+attachment/4763969/+files/0001-getopt-Terminate-long_options-even-if-add_long_optio.patch

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Anders Kaseorg]

Upstream submission: http://marc.info/?l=util-linux-
ng=147691687505965=2

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Anders Kaseorg]

I can still reproduce this on 16.10 fully updated with libc6:amd64
2.24-3ubuntu1, so the Ubuntu task should probably be reopened.

$ LANG=de_DE mkinitramfs --help
Segmentation fault (core dumped)
W: non-GNU getopt
$ LANG=de_DE getopt -o c -- --help
Segmentation fault (core dumped)

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Adam Conrad]

Ahh, and this is why.  I was previously testing with "de_DE", and today
tested with "de_DE.UTF-8":

(xenial-amd64)root@nosferatu:~# dpkg -l libc6 | grep ^i
ii  libc6:amd642.23-0ubuntu3 amd64GNU C Library: Shared libraries
(xenial-amd64)root@nosferatu:~# mkinitramfs --help
/usr/sbin/mkinitramfs: unrecognized option '--help'
W: non-GNU getopt
(xenial-amd64)root@nosferatu:~# LANG=de_DE mkinitramfs --help
Segmentation fault (core dumped)
W: non-GNU getopt
(xenial-amd64)root@nosferatu:~# LANG=de_DE.UTF-8 mkinitramfs --help
Segmentation fault (core dumped)
W: non-GNU getopt
(xenial-amd64)root@nosferatu:~# apt-get update && apt-get install libc6
[...]
(xenial-amd64)root@nosferatu:~# dpkg -l libc6 | grep ^i
ii  libc6:amd642.23-0ubuntu4 amd64GNU C Library: Shared libraries
(xenial-amd64)root@nosferatu:~# mkinitramfs --help
/usr/sbin/mkinitramfs: unrecognized option '--help'
W: non-GNU getopt
(xenial-amd64)root@nosferatu:~# LANG=de_DE mkinitramfs --help
/usr/sbin/mkinitramfs: unrecognized option '--help'
W: non-GNU getopt
(xenial-amd64)root@nosferatu:~# LANG=de_DE.UTF-8 mkinitramfs --help
Segmentation fault (core dumped)
W: non-GNU getopt

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Adam Conrad]

Thorsten, I can't reproduce this segv with the -proposed binaries
installed.  Do you have a new recipe for reproduction?

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Adam Conrad]

Oh, hrm.  No, I can reproduce it now.  How odd.  I swear I couldn't just
a few days ago.

** Tags removed: verification-done
** Tags added: verification-failed

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: Confirmed => Fix Committed

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Adam Conrad]

Verified that the 2.23-0ubuntu4 binaries in xenial-proposed resolve this
issue.

** Tags removed: verification-needed
** Tags added: verification-done

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Andy Whitcroft]

Hello bugproxy, or anyone else affected,

Accepted glibc into xenial-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/glibc/2.23-0ubuntu4 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 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 to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

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

** Changed in: glibc (Ubuntu Xenial)
   Status: Confirmed => Fix Committed

** Tags added: verification-needed

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  mkinitramfs --help > Core dumped

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Launchpad Bug Tracker]

This bug was fixed in the package glibc - 2.24-3ubuntu1

---
glibc (2.24-3ubuntu1) yakkety; urgency=medium

  * Merge with 2.24 from Debian sid, bringing in minor packaging changes and
upstream updates, including the security fix for CVE-2016-6323 on ARMv7.
  * debian/patches/ubuntu/local-altlocaledir.diff: Updated to latest version
from Martin that limits scope to LC_MESSAGES, fixing segv (LP: #1577460)
  * debian/testsuite-xfail-debian.mk: Allow nptl/tst-signal6 to fail on ARM.

 -- Adam Conrad   Wed, 05 Oct 2016 14:25:57 -0600

** Changed in: glibc (Ubuntu)
   Status: Confirmed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-6323

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Ubuntu Foundations Team Bug Bot]

** Tags added: patch

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Martin Pitt]

The above attachment just limits the alternative locale dir to
LC_MESSAGES (not sure if that's the most elegant method, I didn't see
any better one). This keeps the current behaviour of translation
lookups; fixing the two unrelated bugs above might be too intrusive at
this point for yakkety, and correctly interleaving is actually
remarkably difficult due to the painful structure of the code.

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Martin Pitt]

I've tried (in vain so far) to understand what's going on and how this
is related to the locale-langpack/ search path patch.

Tested/reproduced with

  LC_ALL=fo_FOO gdb --args getopt -o c:d:ko:r:v -n /usr/sbin/mkinitramfs
-- --help

Some observations:

 * This crash doesn't happen with looking up LC_MESSAGES, only in this
getopt case with LC_IDENTIFICATION. The mere presence of
/usr/lib/locale/fo_FOO/LC_IDENTIFICATION in the search path causes this
crash. If *only* /usr/lib/locale/fo/LC_IDENTIFICATION gets added (and
not also the more specific fo_FOO one) then things still work.

 * In all cases the returned list from _nl_make_l10nflist() was correct
in memory, so I suppose this triggers some bug (insufficiently large
buffer or so) somewhere else. Nevertheless we need to be bug compatible
with that.

During that I also noticed some bugs in the patch:

 malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
-   * (1 << pop (mask))
+   * 2 * (1 << pop (mask))

We shouldn't allocate 2* the number here, just argz_count() + 1, as we
are only adding one more search path.

Also we should correctly interleave lookups in /usr/share/locale-
langpack/ with /usr/share/locale wrt. the mask -- i. e. we should
*first* check if there is a more specific locale (with territory,
encoding, etc.) in /usr/share/locale-langpack/ and then check more
generic locales in both places.

But if I just fix these two bugs, then getopt still crashes on getting
too many LC_IDENTIFICATION search paths. So one proposal would be to
only do the locale-langpack/ lookup for LC_MESSAGES, not for any other
category; our langpacks only ship LC_MESSAGES anyway, so we make the
scope of this small enough to avoid triggering the crash.

** Patch added: "fixed debian/patches/ubuntu/local-altlocaledir.diff"
   
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1577460/+attachment/4755012/+files/local-altlocaledir.diff

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[bugproxy]

** Tags removed: targetmilestone-inin---
** Tags added: targetmilestone-inin16041

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[dann frazier]

** Changed in: ubuntu-z-systems
   Status: New => Confirmed

** Changed in: ubuntu-z-systems
   Importance: Undecided => High

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[dann frazier]

** Also affects: ubuntu-z-systems
   Importance: Undecided
   Status: New

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

** Package changed: util-linux (Ubuntu) => glibc (Ubuntu)

** Changed in: glibc (Ubuntu)
 Assignee: Skipper Bug Screeners (skipper-screen-team) => Adam Conrad 
(adconrad)

** Changed in: glibc (Ubuntu Xenial)
 Assignee: (unassigned) => Adam Conrad (adconrad)

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

"With Ubuntu 14.40 login via ssh:" doesn't make sense at all =) There is
no such thing as 14.40 release of Ubuntu. Sounds like miss-typed 14.04,
however 14.04 doesn't exist for s390x, and the bug report is for s390x.
So we guess it's for 16.04. But that's mostly irrelevant misleading
details.

The bug is valid, and reproducible on other architectures. This is not
s390x specific.

Running locale-gen and/or installer relevant langpacks (e.g. german
langpack) but getopt really should not segfault like that, as it's
common for user to have locales, that are not available on the target
server.

** Changed in: util-linux (Ubuntu)
   Importance: Undecided => Critical

** Changed in: util-linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: util-linux (Ubuntu)
   Status: New => Confirmed

** Changed in: util-linux (Ubuntu Xenial)
   Status: New => Confirmed

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Dimitri John Ledkov]

** Package changed: ubuntu => util-linux (Ubuntu)

** Also affects: util-linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

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[Bug 1577460] Re: mkinitramfs --help > Core dumped

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general.  It is important that bug reports be filed about source
packages so that people interested in the package can find the bugs
about it.  You can find some hints about determining what package your
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You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit
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** Tags added: bot-comment

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