Public bug reported:
I noted the following messages on a just installed Ubuntu Focal:
$ dmesg | grep cups
[ 1769.505132] audit: type=1400 audit(1587372138.575:3011): apparmor="DENIED"
operation="capable" profile="/usr/sbin/cups-browsed" pid=15230
comm="cups-browsed" capability=23 capname="sys_nice"
[ 1776.623181] audit: type=1400 audit(1587372145.693:3012): apparmor="DENIED"
operation="capable" profile="/usr/sbin/cups-browsed" pid=15510
comm="cups-browsed" capability=23 capname="sys_nice"
[ 2040.426033] audit: type=1400 audit(1587372409.494:3013): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426044] audit: type=1400 audit(1587372409.494:3014): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426074] audit: type=1400 audit(1587372409.494:3015): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426092] audit: type=1400 audit(1587372409.494:3016): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426106] audit: type=1400 audit(1587372409.494:3017): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404914] audit: type=1400 audit(1587372410.473:3018): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404920] audit: type=1400 audit(1587372410.473:3019): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404926] audit: type=1400 audit(1587372410.473:3020): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404953] audit: type=1400 audit(1587372410.473:3021): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404963] audit: type=1400 audit(1587372410.473:3022): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925327] audit: type=1400 audit(1587372440.994:3028): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925330] audit: type=1400 audit(1587372440.994:3029): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925337] audit: type=1400 audit(1587372440.994:3030): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925382] audit: type=1400 audit(1587372440.994:3031): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925391] audit: type=1400 audit(1587372440.994:3032): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
It happened after installing Brother DCPL3550CDW Linux drivers.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cups-daemon 2.3.1-9ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-25.29-lowlatency 5.4.30
Uname: Linux 5.4.0-25-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 20 10:49:08 2020
InstallationDate: Installed on 2020-04-19 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200417)
Lpstat: device for DCPL3550CDW:
dnssd://Brother%20DCP-L3550CDW%20series._ipp._tcp.local/?uuid=e3248000-80ce-11db-8000-3c2af4b66edd
MachineType: LENOVO 20MAS0DF03
Papersize: a4
PpdFiles: DCPL3550CDW: Brother DCP-L3550CDW CUPS
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-25-lowlatency
root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2CET50W (1.33 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20MAS0DF03
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2CET50W(1.33):bd01/15/2020:svnLENOVO:pn20MAS0DF03:pvrThinkPadP52:rvnLENOVO:rn20MAS0DF03:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P52
dmi.product.name: 20MAS0DF03
dmi.product.sku: LENOVO_MT_20MA_BU_Think_FM_ThinkPad P52
dmi.product.version: ThinkPad P52
dmi.sys.vendor: LENOVO
** Affects: cups (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apparmor apport-bug focal
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https://bugs.launchpad.net/bugs/1873764
Title:
CUPS Apparmor Error opening /proc/sys/kernel/random/boot_id
Status in cups package in Ubuntu:
New
Bug description:
I noted the following messages on a just installed Ubuntu Focal:
$ dmesg | grep cups
[ 1769.505132] audit: type=1400 audit(1587372138.575:3011): apparmor="DENIED"
operation="capable" profile="/usr/sbin/cups-browsed" pid=15230
comm="cups-browsed" capability=23 capname="sys_nice"
[ 1776.623181] audit: type=1400 audit(1587372145.693:3012): apparmor="DENIED"
operation="capable" profile="/usr/sbin/cups-browsed" pid=15510
comm="cups-browsed" capability=23 capname="sys_nice"
[ 2040.426033] audit: type=1400 audit(1587372409.494:3013): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426044] audit: type=1400 audit(1587372409.494:3014): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426074] audit: type=1400 audit(1587372409.494:3015): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426092] audit: type=1400 audit(1587372409.494:3016): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2040.426106] audit: type=1400 audit(1587372409.494:3017): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404914] audit: type=1400 audit(1587372410.473:3018): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404920] audit: type=1400 audit(1587372410.473:3019): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404926] audit: type=1400 audit(1587372410.473:3020): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404953] audit: type=1400 audit(1587372410.473:3021): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2041.404963] audit: type=1400 audit(1587372410.473:3022): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925327] audit: type=1400 audit(1587372440.994:3028): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925330] audit: type=1400 audit(1587372440.994:3029): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925337] audit: type=1400 audit(1587372440.994:3030): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925382] audit: type=1400 audit(1587372440.994:3031): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2071.925391] audit: type=1400 audit(1587372440.994:3032): apparmor="DENIED"
operation="open" profile="/usr/sbin/cupsd"
name="/proc/sys/kernel/random/boot_id" pid=15508 comm="cupsd"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
It happened after installing Brother DCPL3550CDW Linux drivers.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cups-daemon 2.3.1-9ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-25.29-lowlatency 5.4.30
Uname: Linux 5.4.0-25-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 20 10:49:08 2020
InstallationDate: Installed on 2020-04-19 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200417)
Lpstat: device for DCPL3550CDW:
dnssd://Brother%20DCP-L3550CDW%20series._ipp._tcp.local/?uuid=e3248000-80ce-11db-8000-3c2af4b66edd
MachineType: LENOVO 20MAS0DF03
Papersize: a4
PpdFiles: DCPL3550CDW: Brother DCP-L3550CDW CUPS
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-25-lowlatency
root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2CET50W (1.33 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20MAS0DF03
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2CET50W(1.33):bd01/15/2020:svnLENOVO:pn20MAS0DF03:pvrThinkPadP52:rvnLENOVO:rn20MAS0DF03:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P52
dmi.product.name: 20MAS0DF03
dmi.product.sku: LENOVO_MT_20MA_BU_Think_FM_ThinkPad P52
dmi.product.version: ThinkPad P52
dmi.sys.vendor: LENOVO
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