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Date: Thu, 28 Feb 2019 07:51:06 +0100 From: Dmitry Vyukov <dvyukov@...gle.com> To: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp> Cc: syzbot <syzbot+e1b8084e532b6ee7afab@...kaller.appspotmail.com>, syzkaller-bugs <syzkaller-bugs@...glegroups.com>, James Morris <jmorris@...ei.org>, LKML <linux-kernel@...r.kernel.org>, linux-security-module@...r.kernel.org, "Serge E. Hallyn" <serge@...lyn.com>, takedakn@...data.co.jp Subject: Re: kernel panic: MAC Initialization failed. On Wed, Feb 27, 2019 at 11:37 PM Tetsuo Handa <penguin-kernel@...ove.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@...kaller.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. Hi Tetsuo, 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 > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@...glegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/8d94063c-e10c-c470-8ce0-1f86c517b1b4%40i-love.sakura.ne.jp. > For more options, visit https://groups.google.com/d/optout.
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