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Message #64600
[Bug 1422521] Re: mmap of ...mir/client-platform/mesa.so DENIED
** Changed in: apparmor
Status: In Progress => Fix Committed
** Changed in: apparmor
Milestone: None => 2.9.2
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https://bugs.launchpad.net/bugs/1422521
Title:
mmap of ...mir/client-platform/mesa.so DENIED
Status in AppArmor Linux application security framework:
Fix Committed
Status in apparmor package in Ubuntu:
Fix Released
Status in apparmor-easyprof-ubuntu package in Ubuntu:
Fix Released
Bug description:
I'm running ubuntu touch vivid-vervet:
root@ubuntu-phablet:/home/phablet# lsb_release -rd
Description: Ubuntu Vivid Vervet (development branch)
Release: 15.04
root@ubuntu-phablet:/home/phablet# system-image-cli -i
current build number: 101
device name: hammerhead
channel: ubuntu-touch/devel-proposed
alias: ubuntu-touch/vivid-proposed
last update: 1970-01-22 15:43:01
version version: 101
version keyring: archive-master
version device: 20150210
version custom: 3
This bug is similar to #658135 but in this case it is the files in
/usr/lib/arm-linux-gnueabihf/mir/client-platform that cannot be
loaded.
root@ubuntu-phablet:/home/phablet# apt-cache policy apparmor
apparmor:
Installed: 2.8.98-0ubuntu4
Candidate: 2.8.98-0ubuntu4
Version table:
*** 2.8.98-0ubuntu4 0
500 http://ports.ubuntu.com/ubuntu-ports/ vivid/main armhf Packages
100 /var/lib/dpkg/status
Most of my installed apps do not start, giving errors similar to this in syslog:
root@ubuntu-phablet:/home/phablet# grep DENIED /var/log/syslog | tail -1
Feb 16 23:11:56 ubuntu-phablet kernel: [28314.176317] type=1400 audit(1424124716.747:217): apparmor="DENIED" operation="file_mmap" profile="com.ubuntu.calculator_calculator_1.3.339" name="/usr/lib/arm-linux-gnueabihf/mir/client-platform/mesa.so" pid=5864 comm="qmlscene" requested_mask="m" denied_mask="m" fsuid=32011 ouid=0
Setting apparmor to complain mode makes the app run, and so does
adding the following line to /etc/apparmor.d/abstractions/base:
/usr/lib/@{multiarch}/**/*.so* mr,
(just before the line saying "/usr/lib/@{multiarch}/**/lib*.so* mr,")
So, mesa.so (and dummy.so and android.so) are not matched because they
do not contain the file name prefix "lib". (Since the file system is
read only I copied the files elsewhere and ran apparmor_parser on the
modified files.)
I do not know if this is the correct fix, but at least it points to a
problem. (Maybe the library name should be different, the change made
to another file, like abstractions/X, or maybe the profile for
calculator is incorrect -- but if it is then lots of profiles are
incorrect.)
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References