kernel panic: MAC Initialization failed.
dvyukov at google.com
Thu Feb 28 06:51:06 UTC 2019
On Wed, Feb 27, 2019 at 11:37 PM Tetsuo Handa
<penguin-kernel at i-love.sakura.ne.jp> wrote:
> On 2019/02/28 2:02, syzbot wrote:
> > Hello,
> > syzbot found the following crash on:
> > HEAD commit: 7b827ff9af88 Add linux-next specific files for 20190227
> > git tree: linux-next
> > console output: https://syzkaller.appspot.com/x/log.txt?x=15336f14c00000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=5fa6b8975759dcc5
> > dashboard link: https://syzkaller.appspot.com/bug?extid=e1b8084e532b6ee7afab
> > compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ee708ac00000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16954084c00000
> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > Reported-by: syzbot+e1b8084e532b6ee7afab at syzkaller.appspotmail.com
> 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.
What misconfiguration you mean?
> If this path is trivially triggered enough to prevent testing, syzbot can
> load access control rules from /etc/tomoyo/ directory of the filesystem
> image and make tomoyo_policy_loaded = true by executing /sbin/init .
> Hmm, maybe we need to think about automated testing environments where
> neither built-in access control rules nor run-time access control rules
> can be provided ... ?
> #syz invalid
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