kernel panic: MAC Initialization failed.

Tetsuo Handa penguin-kernel at
Thu Feb 28 10:19:55 UTC 2019

On 2019/02/28 15:51, Dmitry Vyukov wrote:
> On Wed, Feb 27, 2019 at 11:37 PM Tetsuo Handa
>> Thank you. The LSM stacking seems to be working as expected.
>> But this one should not be considered as a bug.
>> If something went wrong before loading access control rules,
>> it is pointless to continue. Thus, stopping with kernel panic.
> Hi Tetsuo,
> What misconfiguration you mean?

To use security modules, access control rules need to be loaded. Regarding
TOMOYO, access control rules can be loaded from the kernel itself (built-in)
and/or from /etc/tomoyo/ directory via /sbin/tomoyo-init (run-time).

Since the kernel is built without built-in policy and /sbin/tomoyo-init does
not exist, memory allocation failure is handled as a fatal problem.

But if syzbot cannot test other paths due to hitting this path, we need to somehow
avoid panic(). Can you add tomoyo-tools package into your rootfs images? It is
explained at .

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