Bug#826175: xargs: Segfaults on hurd

[Andreas Metzler]

On 2016-06-03 James Clarke  wrote:
> Package: findutils
> Version: 4.6.0+git+20160126-2
> User: debian-hurd@lists.debian.org
> Usertags: hurd
> X-Debbugs-CC: debian-hurd@lists.debian.org

> The latest version of findutils segfaults on hurd:

> debian-hurd:git-src james% echo '' | xargs
> xargs: echo: terminated by signal 11

> This seems to happen whatever input and arguments are given to xargs
> (except for things like --version which cause it not to execute anything
> else). Downgrading to the previous built version (4.4.2-10) works, so
> this is a regression.

I suspect a broken build. Only single build of findutils > 4.4 succeeded
on hurd (4.6.0+git+20160126-2) and afaict for this build the testsuite
run was manually disabled (probably DEB_BUILD_OPTIONS nocheck). A
rebuild with testsuite half a day later failed.

This should not have ended up in the archive.

cu Andreas

-- 
`What a good friend you are to him, Dr. Maturin. His other friends are
so grateful to you.'
`I sew his ears on from time to time, sure'

Still Failing: g-i-installation_debian_sid_daily_hurd_lxde/172

[jenkins]

See 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/172/ 
and 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/172//console
 and 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/172//artifact/results/
 if there are any.

Failure: g-i-installation_debian_sid_daily_hurd_lxde/171

[jenkins]

See 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/171/ 
and 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/171//console
 and 
https://jenkins.debian.net/job/g-i-installation_debian_sid_daily_hurd_lxde/171//artifact/results/
 if there are any.

crosshurd_1.7.51_amd64.changes ACCEPTED into unstable

[Debian FTP Masters]

Accepted:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

Format: 1.8
Date: Fri, 03 Jun 2016 13:17:51 +0200
Source: crosshurd
Binary: crosshurd
Architecture: source all
Version: 1.7.51
Distribution: unstable
Urgency: medium
Maintainer: GNU Hurd Maintainers 
Changed-By: Samuel Thibault 
Description:
 crosshurd  - Install a Debian system
Closes: 825229
Changes:
 crosshurd (1.7.51) unstable; urgency=medium
 .
   [ Rodrigo Valiña Gutiérrez ]
   * Add gnumach.gz symlink for dumb update-grub scripts (Closes: Bug#825229).
 .
   [ Samuel Thibault ]
   * Bump gnumach version to 1.7.
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Thank you for your contribution to Debian.

Bug#825229: marked as done (crosshurd: Incompatibility with update-grub. Fails to boot.)

[Debian Bug Tracking System]

Your message dated Fri, 03 Jun 2016 11:49:51 +
with message-id 
and subject line Bug#825229: fixed in crosshurd 1.7.51
has caused the Debian Bug report #825229,
regarding crosshurd: Incompatibility with update-grub. Fails to boot.
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)


-- 
825229: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=825229
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: crosshurd
Version: 1.7.50
Severity: normal
Tags: patch

Running crosshurd to install in a disk partition and then running update-grub,
rebooting and selecting the Hurd entry, fails to boot because the Grub
does not find /boot/gnumach.gz (there is /boot/gnumach-1.6-486.gz).

The following patch solves the problem in my case:

-
--- makehurddir.sh  2016-05-22 16:28:32.0 +0200
+++ makehurddir2.sh 2016-05-24 21:25:48.678706572 +0200
@@ -43,6 +43,8 @@
 
 if [ -e $TARGET/var/cache/apt/archives/gnumach-image-1.6-486_* ] ; then
 extract gnumach-image-1.6-486
+# place symlink for compatibility with update-grub 
(/etc/grub.d/30_os-prober)
+ln -s gnumach-1.6-486.gz "$TARGET/boot/gnumach.gz"
 fi
 
 if [ -e $TARGET/var/cache/apt/archives/libbz2-1.0_* ] ; then
-

Afterwards, the Hurd starts to boot but fails (hangs) with the following error
(maybe an issue with partition names):

start ext2fs: ext2fs: device:(hostdisk//dev/sda,msdos2): No such device or 
address

Also I have observed that, running "grep TARGET /usr/share/crosshurd/*"
yields some results with "$TARGET/..." quoted and some others not,
so if we run crosshurd with a path with spaces, it may fail.



-- System Information:
Debian Release: 8.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=gl_ES.utf8, LC_CTYPE=gl_ES.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages crosshurd depends on:
ii  dialog1.2-20140911-1
ii  dpkg-dev  1.17.26

Versions of packages crosshurd recommends:
pn  attr  

crosshurd suggests no packages.

-- no debconf information
--- End Message ---
--- Begin Message ---
Source: crosshurd
Source-Version: 1.7.51

We believe that the bug you reported is fixed in the latest version of
crosshurd, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 825...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Samuel Thibault  (supplier of updated crosshurd package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

Format: 1.8
Date: Fri, 03 Jun 2016 13:17:51 +0200
Source: crosshurd
Binary: crosshurd
Architecture: source all
Version: 1.7.51
Distribution: unstable
Urgency: medium
Maintainer: GNU Hurd Maintainers 
Changed-By: Samuel Thibault 
Description:
 crosshurd  - Install a Debian system
Closes: 825229
Changes:
 crosshurd (1.7.51) unstable; urgency=medium
 .
   [ Rodrigo Valiña Gutiérrez ]
   * Add gnumach.gz symlink for dumb update-grub scripts (Closes: Bug#825229).
 .
   [ Samuel Thibault ]
   * Bump gnumach version to 1.7.
Checksums-Sha1:
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Checksums-Sha256:
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Files:
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 392dea34e199de59f00eaa3def8a9a2a 20584 misc extra crosshurd_1.7.51_all.deb

Processing of crosshurd_1.7.51_amd64.changes

[Debian FTP Masters]

crosshurd_1.7.51_amd64.changes uploaded successfully to ftp-master.debian.org
along with the files:
  crosshurd_1.7.51.dsc
  crosshurd_1.7.51.tar.gz
  crosshurd_1.7.51_all.deb

Greetings,

Your Debian queue daemon (running on host coccia.debian.org)

Re: Bug#826043: apt: gpg validation fails on hurd

[David Kalnischkies]

Hi,

(purely optional mail follows)

On Fri, Jun 03, 2016 at 11:21:41AM +0200, Adam Borowski wrote:
> On Fri, Jun 03, 2016 at 02:25:45PM +0530, Ritesh Raj Sarraf wrote:
> > On Thu, 2016-06-02 at 01:13 +0200, Samuel Thibault wrote:
> > From what you've explained, this bug should be reassigned to APT then ?
> 
> It has been filed on apt and never been assigned elsewhere.
> And, David already fixed it in git, tagging the bug +pending.
> He responded[1] only to 826043-submitter (ie, me and the bug docket)
> without CC:ing debian-hurd@l.d.o.  Which I'm hereby doing.

[Not sure I would have included d-hurd@ even if I had manually replied
(but I thought buglog & commit message [1] will be enough text already
and hadn't really anything to add) mainly as this isn't really hurd
specific, just easier to 'see' as a problem as on hurd it actually fails
while on linux it 'just' generates a warning which is hidden in the 'apt
update' case, but manual usage of apt-key should have made them visible
(sometimes at least). That also means I haven't actually tested it on
hurd, so if anyone wants to… testers are always welcome!]


btw: I just checked: I introduced the first of the two finds (which is
the more obvious problem as that codepath is used more) on 7 Jul 2015
(25f27319) [the other is 6 Dec 2015], so that problem isn't recent but
lingers there since 1.1 and I have to wonder if something changed in
regards to this on hurd (or d-i) or if that really is some huge
Baader-Meinhof bias… [2]

(and I am bit surprised we had nobody on non-hurd complain about
'strange' messages being emitted while using apt-key – but perhaps that
just means nobody is using apt-key anymore… if only that were true…)


Best regards

David Kalnischkies

[1] The mail isn't even sent by me via a tool, but by a git hook:
https://wiki.debian.org/Alioth/Git#Marking_closed_bugs_as_pending_in_BTS
[2] I have these "how on earth could we miss that for so long?!?"
moments quite often recently… which is another instance itself…


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Re: Bug#826043: apt: gpg validation fails on hurd

[Adam Borowski]

On Fri, Jun 03, 2016 at 02:25:45PM +0530, Ritesh Raj Sarraf wrote:
> On Thu, 2016-06-02 at 01:13 +0200, Samuel Thibault wrote:
> > So, to summarize, the issue is that since apt-get update runs find as a
> > non-root user, running it from a 700 directory breaks find.
> 
> Thank you for the root cause. I am hitting the same problem on my Hurd box.
> 
> From what you've explained, this bug should be reassigned to APT then ?

It has been filed on apt and never been assigned elsewhere.
And, David already fixed it in git, tagging the bug +pending.
He responded[1] only to 826043-submitter (ie, me and the bug docket)
without CC:ing debian-hurd@l.d.o.  Which I'm hereby doing.

I'm not sure whether the choose-mirror failure in d-i is a symptom of this
bug, but because of the timing I assume so, and we'll soon know if this is
the case.

Thanks Samuel and David!


[1]. Via an automated tool, so it's hard to blame him, especially that the
debian-hurd CC was included only in a single later message.
-- 
An imaginary friend squared is a real enemy.

Re: Bug#826043: apt: gpg validation fails on hurd

[Ritesh Raj Sarraf]

On Thu, 2016-06-02 at 01:13 +0200, Samuel Thibault wrote:
> On Hurd, getting $PWD from the 700 directory fails, and find thus aborts
> immediately, without emitting any output, and thus no keyring is found.
> 
> So, to summarize, the issue is that since apt-get update runs find as a
> non-root user, running it from a 700 directory breaks find.
> 
> I guess it may make sense for apt to chdir to e.g. / before running the
> find command, so that we are sure that find doesn't get any issue?
> 
> Actually it's pure luck that the script doesn't completely fail on Linux
> when find fails due to not being able to restore the cwd: since the find
> command is only used as parameter of a for loop, the returned value
> is ignored by sh. Had the find command output been first stored in a
> variable, the script would have aborted...

Thank you for the root cause. I am hitting the same problem on my Hurd box.

From what you've explained, this bug should be reassigned to APT then ?


-- 
Given the large number of mailing lists I follow, I request you to CC
me in replies for quicker response

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