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[Launchpad Bug Tracker <1370930@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cups - 1.7.5-2ubuntu1

---------------
cups (1.7.5-2ubuntu1) utopic; urgency=medium

  * debian/local/apparmor-profile:
    - move Ux to Cx -> third_party and provie a third_party child profile. In
      this manner, we can add some modest confinement (can't change MAC
      policy, change_profile or mount) but more importantly it allows us to
      specify peer=third_party to restrict where the strictly confined cups
      process can send signals (LP: #1370930)
    - allow r of /var/cache/samba/*.tdb (LP: #1371097)
    - allow r of /var/{cache,lib}/samba/printing/printers.tdb
 -- Jamie Strandboge <jamie@xxxxxxxxxx>   Wed, 24 Sep 2014 11:24:03 -0500

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

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https://bugs.launchpad.net/bugs/1370930

Title:
  apparmor cups samba problem no printing

Status in “cups” package in Ubuntu:
  Fix Released

Bug description:
  I configured a usb brother printer correctly (working) on ubuntu 14.04.1.
  Then I installed a samba server to share this printer on a windows network
  The samba printing from windows machines works correctly. The usb direct cups printing inform printing OK, jobs completed, but nothing prints. On syslog I see this apparmor DENIED messages:
  Sep 18 08:51:57 gabi-K55A kernel: [  844.181601] type=1400 audit(1411023117.729:74): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd
  " name="/var/cache/samba/gencache.tdb" pid=3353 comm="smb" requested_mask="r" denied_mask="r" fsuid=7 ouid=0
  Sep 18 08:51:57 gabi-K55A kernel: [  844.181649] type=1400 audit(1411023117.729:75): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd
  " name="/var/cache/samba/gencache.tdb" pid=3353 comm="smb" requested_mask="r" denied_mask="r" fsuid=7 ouid=0
  Sep 18 08:51:57 gabi-K55A kernel: [  844.182286] type=1400 audit(1411023117.729:76): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd
  " name="/var/cache/samba/gencache.tdb" pid=3353 comm="smb" requested_mask="r" denied_mask="r" fsuid=7 ouid=0
  Sep 18 08:54:04 gabi-K55A kernel: [  971.394145] type=1400 audit(1411023244.943:77): apparmor="DENIED" operation="signal" profile="/usr/sbin/cup
  sd" pid=2034 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
  Sep 18 08:54:04 gabi-K55A kernel: [  971.394155] type=1400 audit(1411023244.943:78): apparmor="DENIED" operation="signal" profile="/usr/sbin/cup
  sd" pid=2034 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
  Sep 18 08:54:04 gabi-K55A kernel: [  971.394161] type=1400 audit(1411023244.943:79): apparmor="DENIED" operation="signal" profile="/usr/sbin/cup
  sd" pid=2034 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
  Sep 18 08:54:04 gabi-K55A kernel: [  971.394166] type=1400 audit(1411023244.943:80): apparmor="DENIED" operation="signal" profile="/usr/sbin/cup
  sd" pid=2034 comm="cupsd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"


  I install with apt-get last apparmor profiles, but I get this messages yet, with the same result (no printing):
  Sep 18 09:15:06 gabi-K55A kernel: [  100.620853] usblp0: removed
  Sep 18 09:15:06 gabi-K55A kernel: [  100.878155] usblp 1-4:1.0: usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04F9 pid 0x0037
  Sep 18 09:16:39 gabi-K55A kernel: [  193.894732] type=1400 audit(1411024599.437:117): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/var/cache/samba/gencache.tdb" pid=2384 comm="smb" requested_mask="r" denied_mask="r" fsuid=7 ouid=0

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