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Hi AppArmor kernel developers,

we got this bug reported in Debian:

Kertesz Laszlo:
>    * 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

Do you need more info from me or from the bug reporter (Kertesz
Laszlo, Cc'ed)?

Cheers,
-- 
intrigeri

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