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[TEN <1370930@xxxxxxxxxxxxxxxxxx>]

Probably triggered by some recent package update, 
Ubuntu 14.04.3 LTS 3.13.0-61-generic #100-Ubuntu SMP Wed Jul 29 11:21:34 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
reports in /var/log/kern.log:

type=1400 audit(1439324668.029:103): apparmor="DENIED" operation="open"
profile="/usr/sbin/cupsd" name="/var/cache/samba/gencache.tdb" pid=1019
comm="smb" requested_mask="r" denied_mask="r" fsuid=7 ouid=0

The above message can be prevented by this addition to
/etc/apparmor.d/usr.sbin.cupsd from bug 1371097 after the following
comment:

  # Site-specific additions and overrides. See local/README for details.
  #include <local/usr.sbin.cupsd>

  /var/cache/samba/*.tdb r,

However, another error follows, also repeatedly:

type=1400 audit(1439325510.504:68): apparmor="DENIED" operation="signal"
profile="/usr/sbin/cupsd" pid=952 comm="cupsd" requested_mask="send"
denied_mask="send" signal=term peer="unconfined"

For this one, suggestions not directly applicable to LTS seem to be made in bug 1370930 with a fix for other versions.
How can this best be applied to also fix Ubuntu 14.04.3 ?

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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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