[pkg-apparmor] Bug#885775: apparmor: Apparmor triggers NULL pointer dereference in kernel 4.14.7-1 when updating with aptitude

[Kertesz Laszlo]

Package: apparmor
Version: 2.11.1-4
Severity: important

Dear Maintainer,


   * What led up to the situation?
	Installed kernel 4.14 in Debian Testing and ever since at every upgrade where systemd or other important 
	packages were upgraded the system froze with the last 2 lines in the system log:

	Dec 29 21:25:26 laca-desktop kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000005
	Dec 29 21:25:26 laca-desktop kernel: IP: __task_pid_nr_ns+0xc7/0xf0

	The system became unresponsive, not even the sysrq combinations were working
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
	Restarted ran dpkg --configure -a and every time the system froze
	Booting with the 4.13 kernel was fine, dpkg finished its run

	At the next upgrade i still got the freeze, after reboot i disabled the kernel security features with the kernel command line security=false

   * What was the outcome of this action?
	dpkg was working fine with the kernel 4.14 too


-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing'), (2, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages apparmor depends on:
ii  debconf [debconf-2.0]  1.5.65
ii  libc6                  2.25-5
ii  lsb-base               9.20170808
ii  python3                3.6.4~rc1-2

apparmor recommends no packages.

Versions of packages apparmor suggests:
ii  apparmor-profiles        2.11.1-4
pn  apparmor-profiles-extra  <none>
ii  apparmor-utils           2.11.1-4

-- debconf information excluded