[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Mathew Hodson]

** No longer affects: linux (Ubuntu Trusty)

** No longer affects: linux (Ubuntu Precise)

** No longer affects: linux (Ubuntu)

** No longer affects: lxc (Ubuntu)

** Changed in: lxc (Ubuntu Trusty)
   Importance: Undecided => High

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

Hi,

The fix was uploaded last week for acceptance by the SRU team.  It's
waiting to be accepted into -proposed.  Then it will need to be tested
to be accepted into -updates.

https://launchpad.net/ubuntu/precise/+queue?queue_state=1_text=lxc

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stefan Huehner]

We have tested the patch from #39 by applying in manually in on of our
affected systems and can confirm that it fixes the regression. With it
in place lxc-start works again when having latest precise 3.2 kernel.

@Mathieu:
Thanks for providing it.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stéphane Graber]

Hello Andy, or anyone else affected,

Accepted lxc into precise-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/lxc/0.7.5-3ubuntu70 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: lxc (Ubuntu Precise)
   Status: New => Fix Committed

** Tags removed: verification-done

** Tags added: verification-needed

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

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

** Also affects: lxc (Ubuntu Precise)
   Importance: Undecided
   Status: New

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

** Description changed:

+ ==
+ SRU Justification:
+ Impact: containers fail to start!
+ Regression potential: we only add a copy of an existing apparmor allow rule
+   with a different syntax (no trailing /), leaving the old one for older
+   aa/kernel.  There should be no regressions.
+ Test case: lxc-create -t ubuntu -n u1; lxc-start -n u1
+ ==
+ 
  We are seeing test suite failures under ADT testing with linux, linux-
  lts-utopic and linux-lts-vivid kernels:
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_103318@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_103325@/log.gz
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151009_085841@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151009_091723@/log.gz
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_105332@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_114021@/log.gz

** Changed in: lxc (Ubuntu Precise)
   Importance: Undecided => High

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

** Description changed:

  ==
- SRU Justification:
+ SRU Justification (for precise):
  Impact: containers fail to start!
  Regression potential: we only add a copy of an existing apparmor allow rule
-   with a different syntax (no trailing /), leaving the old one for older
-   aa/kernel.  There should be no regressions.
+   with a different syntax (no trailing /), leaving the old one for older
+   aa/kernel.  There should be no regressions.
  Test case: lxc-create -t ubuntu -n u1; lxc-start -n u1
  ==
  
  We are seeing test suite failures under ADT testing with linux, linux-
  lts-utopic and linux-lts-vivid kernels:
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_103318@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_103325@/log.gz
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151009_085841@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151009_091723@/log.gz
  
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_105332@/log.gz
  
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_114021@/log.gz

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Marc Reymann]

So, there's still no fix for 12.04 in the standard repos? I mean,
Precise is called "LTS" after all.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stefan Huehner]

Hi Marc,
please check comment #33 from Serge. He explained that formally lxc in precise 
is not covered by lts.

However a very special case as a LTS update in main in precise (kernel) did 
break unrelated software (lxc) which is a clear regression.
And then not having that other software not in being in main -> skips it from 
LTS is lets say very annoying.

@Robert:
using that higher version of lxc is not a perfect drop-up replacement either as 
usage changed compared to old precise lxc (i.e. no lxc-list anymore but lxc-ls 
-f) and maybe other changes.


We'll probably look into backporting the lxc fix for precise as we have quite a 
few machines affected. But no ETA, so if anybody else here can pick that up 
before that would be very welcome.


@Serge:
Any chance to get some policy statement from Ubuntu here?  As i see maybe that 
example as very special regression caused by lts update should maybe warrant 
fixing items not in main if broken by it.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Mathieu Lafon]

I'm also interested by an update of the lxc package for precise.

The attached patch is working for me (add "/dev/pts/ptmx -> /dev/ptmx"
instead of "/dev/pts/ptmx/ -> /dev/ptmx/"). Note that keeping the
previous rule is required for not breaking old kernels.

** Patch added: "0075-lxc-apparmor-update.patch"
   
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1504781/+attachment/4506835/+files/0075-lxc-apparmor-update.patch

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

@stefan-huehner - sorry, I'm losing track.  is what you are asking for
just a lxc update to precise-proposed with the new apparmor allow rule
that jj suggested?

If so, in comment #33 I was trying to encourage a debdiff to be posted
by someone who could best test it.  I'll then sponsor it into the
archive.

I'll make a note in my tickler file that if noone has posted a debdiff
by friday, I'll post one then.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Robert]

For me in 12.04 this worked:
Adding the PPA - https://launchpad.net/~ubuntu-lxc/+archive/ubuntu/lxc-stable

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[DawnCold]

+1

after upgraded to lxc 1.0.7-0ubuntu0.9 it works for me

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

Judging by jjohansen's comment #8, I guess the shipped common
configuration files in precise's lxc should be updated to include the
new rule.  Precise's lxc is in universe, community supported.  Can you
provide a proposed, tested debdiff and ping me?  I'll sponsor it when
ready if needed.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stratos Zolotas]

As Eugene said, there is a bug affecting precise with the latest 3.2 and
3.13 (supported LTS trusty kernel for precise) and the official LXC
package. No backports or ppa used.

The bug is marked as duplicate but no fix for 12.04 is released.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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Re: [Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Serge Hallyn]

Quoting Stratos Zolotas (str...@gmail.com):
> Another one has asked but no reply yet. Is a fix for 12.04 going to be
> released? The bug is still valid there.

Which bug are you looking for?  You're using a backport or ppa
or custom built lxc and are looking for a kernel fix?

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Eugene Miloslavsky]

as documented in comment 20 or
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507959 lxc start
fails when using latest LXC package from official ubuntu app repo with
3.2.0-92.130 and 3.2.0-92.131.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Paul Sokolovsky]

The above report is against:
 lxc 1.0.7-0ubuntu0.7   
 amd64

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stratos Zolotas]

Another one has asked but no reply yet. Is a fix for 12.04 going to be
released? The bug is still valid there.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Paul Sokolovsky]

I got hit by the same issue, with the same unlucky kernel (installed
from normal update channel):

root@x230:~# uname -a
Linux x230 3.13.0-66-generic #108-Ubuntu SMP Wed Oct 7 15:20:27 UTC 2015 x86_64 
x86_64 x86_64 GNU/Linux

Will read suggestions above before going to back to classical VM...

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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Re: [Aims] [Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Jan Groenewald]

The fix is already released. Update lxc, then update the kernel.

Regards,
Jan

On 22 October 2015 at 17:44, Paul Sokolovsky <1504...@bugs.launchpad.net>
wrote:

> I got hit by the same issue, with the same unlucky kernel (installed
> from normal update channel):
>
> root@x230:~# uname -a
> Linux x230 3.13.0-66-generic #108-Ubuntu SMP Wed Oct 7 15:20:27 UTC 2015
> x86_64 x86_64 x86_64 GNU/Linux
>
> Will read suggestions above before going to back to classical VM...
>
> --
> You received this bug notification because you are a member of AIMS,
> which is subscribed to the bug report.
> https://bugs.launchpad.net/bugs/1504781
>
> Title:
>   lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
>   AppArmor denies /dev/ptmx mounting
>
> Status in linux package in Ubuntu:
>   Invalid
> Status in lxc package in Ubuntu:
>   Invalid
> Status in linux source package in Trusty:
>   Invalid
> Status in lxc source package in Trusty:
>   Fix Released
>
> Bug description:
>   We are seeing test suite failures under ADT testing with linux, linux-
>   lts-utopic and linux-lts-vivid kernels:
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_103318@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_103325@/log.gz
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151009_085841@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151009_091723@/log.gz
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_105332@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_114021@/log.gz
>
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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Paul Sokolovsky]

Upgrading to 1.0.7-0ubuntu0.9 from updates fixed it. Sorry for the
noise.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Launchpad Bug Tracker]

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

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

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Daniel Bull]

This seems to explain it, currently trying to teach myself apparmor to
find a temporary fix...

apps kernel: [  707.036112] audit: type=1400 audit(1445331859.865:41):
apparmor="DENIED" operation="mount" info="failed type match" error=-13
profile="/usr/bin/lxc-start" name="/dev/ptmx" pid=2746 comm="lxc-start"
srcname="/dev/pts/ptmx" flags="rw, bind"

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Nicolas Delvaux]

@Stephen: I had the same problem after today's upgrade.
Activating the proposed repository and upgrading lxc to version 
1.0.7-0ubuntu0.9 fixed the issue for me.

See comment #11 for details.

But it's a shame this proposed fix was not released to everyone before
the new kernel.

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

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Daniel Bull]

I can confirm the same as what Stephen just said.
Servers rebooted overnight for the security patch and none of the LXC 
containers restarted or can be started.

lxc-start: conf.c: setup_pts: 1772 Permission denied - mount failed
'/dev/pts/ptmx'->'/dev/ptmx'

This is on a live 14.04 LTS server

Again I can confirm modifying the start-container file does not work

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Alex L. Demidov]

Is there a fix for Ubuntu 12.04 LTS ?

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Mark Thornton]

The proposed update works for us. When is it likely to be released as we
don't want to do this on our production servers?

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Martin Pitt]

I'm expediting the usual 7 day maturing period; this is a rather grave
regression and apparently the new kernel didn't get around to add a
Breaks: to the previous LXC version. Thanks for verifying!

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  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Launchpad Bug Tracker]

This bug was fixed in the package lxc - 1.0.7-0ubuntu0.9

---
lxc (1.0.7-0ubuntu0.9) trusty; urgency=medium

  * Update previous patch to include some extra apparmor rules.
(LP: #1504781)

 -- Stéphane Graber   Wed, 14 Oct 2015 13:59:48
-0700

** Changed in: lxc (Ubuntu Trusty)
   Status: Fix Committed => Fix Released

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stephen Gaito]

@Martin, many thanks for releasing this into the "wild".

I can confirm that it has now appeared on Trusty-updates on 1&1 servers
and in the "normal" GB archives.

I can also confirm that this fixes my LXC server problems.

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stephen Gaito]

Hello,

As of this morning's security roll out of the Linux 3.13.0-66 kernel,
this bug *is* effecting *live* LXC containers ;-(

(I am using Trusty 14.04 LTS - I note that recently built Trusty 14.04.3
machines are not rolling out Linux 3.13.0-66 as they have Linux
3.19.0-30-generic)

Reading between the lines of @jjohansen's comments (#8, #10), I updated
my /etc/apparmor.d/abstractions/lxc/start-container apparmor
configuration file from the existing:

>   mount options=bind /dev/pts/ptmx/ -> /dev/ptmx/,

to

>   mount options=(rw, bind) /dev/pts/ptmx/ -> /dev/ptmx/,

Unfortunately I can confirm that this *does* *not* solve the problem.
Have I misunderstood something?

I can also confirm that I have exactly the same error messages listed
above in @pitti's comment #4.

Is there any know work-around/fix?

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Daniel]

I see a connection to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507959. is it a
duplicate?

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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Re: [Aims] [Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Jan Groenewald]

Looks like it is a duplicate. I've marked it as such.

Regards
Jan

On 20 October 2015 at 20:28, Daniel <1504...@bugs.launchpad.net> wrote:

> I see a connection to
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507959. is it a
> duplicate?
>
> --
> You received this bug notification because you are a member of AIMS,
> which is subscribed to the bug report.
> https://bugs.launchpad.net/bugs/1504781
>
> Title:
>   lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
>   AppArmor denies /dev/ptmx mounting
>
> Status in linux package in Ubuntu:
>   Invalid
> Status in lxc package in Ubuntu:
>   Invalid
> Status in linux source package in Trusty:
>   Invalid
> Status in lxc source package in Trusty:
>   Fix Released
>
> Bug description:
>   We are seeing test suite failures under ADT testing with linux, linux-
>   lts-utopic and linux-lts-vivid kernels:
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_103318@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_103325@/log.gz
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151009_085841@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151009_091723@/log.gz
>
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/l/lxc/20151010_105332@/log.gz
>
> https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/i386/l/lxc/20151010_114021@/log.gz
>
> To manage notifications about this bug go to:
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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[John Johansen]

yes,
  UBUNTU: SAUCE: (no-up) apparmor: fix mount not handling disconnected 
paths 

is causing the regression. However reverting this fix will cause issues
for Bug 1496430, which was blocking a fix for a CVE.

The correct solution is to update the profile.

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  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Chris J Arges]

Hello Andy, or anyone else affected,

Accepted lxc into trusty-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/lxc/1.0.7-0ubuntu0.8
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 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: lxc (Ubuntu Trusty)
   Status: New => Fix Committed

** Tags added: verification-needed

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[John Johansen]

To be specific I added the rule
  mount options=(rw,bind) /dev/pts/ptmx -> /dev/ptmx,

to the lxc-start profile

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Title:
  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Martin Pitt]

I suppose the recent kernel patch

UBUNTU: SAUCE: (no-up) apparmor: fix mount not handling disconnected
paths

which got backported to trusty causes this regression. As the same code
is present in later releases, I guess that in v/w lxc has an updated
apparmor profile which allows the operation that trusty's lxc is now
failing on due to the new apparmor violation?

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  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
  AppArmor denies /dev/ptmx mounting

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[Bug 1504781] Re: lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66: AppArmor denies /dev/ptmx mounting

[Stéphane Graber]

What I don't get is why the other tests aren't failing too, they all
start containers too and so should hit the exact same failure. Why one
of the last tests is the one hanging just doesn't make sense to me.

Anyway, looks like there's a way for us to reproduce this and look into
it. It may well be a kernel/apparmor regression after all.

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  lxc-test-ubuntu hangs forever in trusty-proposed with Linux 3.13.0-66:
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