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[Rafael David Tinoco <rafael.tinoco@xxxxxxxxxxxxx>]

Pavel, Déziel,

Im reproducing the same issue with dnsmasq + openstack + neutron:

Feb 16 18:35:01 juju-inaddy-machine-12 kernel: [ 4357.680900] audit:
type=1400 audit(1455647701.796:121): apparmor="DENIED"
operation="sendmsg" info="Failed name lookup - disconnected path"
error=-13 profile="/usr/sbin/dnsmasq" name="dev/log" pid=15176
comm="dnsmasq" requested_mask="w" denied_mask="w" fsuid=65534 ouid=0

AND when using :

/usr/sbin/dnsmasq flags=(attach_disconnected) {

in usr.sbin.dnsmasq profile, I'm mitigating the problem (just as the
cups patch).

I'll try reproducing using rsyslog so I can have a simple reproducer in
order to bisect kernel 3.13 -> 3.19 and check what caused apparmor's
regression (likely related to apparmor's filesystem labeling mechanism).

Thank you

-inaddy

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https://bugs.launchpad.net/bugs/1373070

Title:
  full fix for disconnected path (paths)

Status in cups package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  Triaged
Status in rsyslog package in Ubuntu:
  New

Bug description:
  With the apparmor 3 RC1 upload, there is an incomplete bug fix for
  disconnected paths. This bug is to track that work.

  This denial may be related:
  Sep 23 10:10:50 localhost kernel: [40262.517799] audit: type=1400 audit(1411485050.722:2862): apparmor="DENIED" operation="sendmsg" info="Failed name lookup - disconnected path" error=-13 profile="/usr/sbin/rsyslogd" name="dev/log" pid=7011 comm="logger" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

  This is related to bug 1375410

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