[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 15 Sep 2016 00:14:43 +0200
From: Mickaël Salaün <mic@...ikod.net>
To: Andy Lutomirski <luto@...capital.net>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Alexei Starovoitov <ast@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Casey Schaufler <casey@...aufler-ca.com>,
Daniel Borkmann <daniel@...earbox.net>,
Daniel Mack <daniel@...que.org>, David Drysdale <drysdale@...gle.com>,
"David S . Miller"
<davem@...emloft.net>,
Elena Reshetova <elena.reshetova@...el.com>,
"Eric W . Biederman" <ebiederm@...ssion.com>,
James Morris <james.l.morris@...cle.com>,
Kees Cook <keescook@...omium.org>, Paul Moore <pmoore@...hat.com>,
Sargun Dhillon <sargun@...gun.me>,
"Serge E . Hallyn" <serge@...lyn.com>, Tejun Heo <tj@...nel.org>,
Will Drewry <wad@...omium.org>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Linux API <linux-api@...r.kernel.org>,
LSM List <linux-security-module@...r.kernel.org>,
Network Development <netdev@...r.kernel.org>,
"open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>
Subject: Re: [RFC v3 19/22] landlock: Add interrupted origin
On 14/09/2016 20:29, Andy Lutomirski wrote:
> On Wed, Sep 14, 2016 at 12:24 AM, Mickaël Salaün <mic@...ikod.net> wrote:
>> This third origin of hook call should cover all possible trigger paths
>> (e.g. page fault). Landlock eBPF programs can then take decisions
>> accordingly.
>>
>> Signed-off-by: Mickaël Salaün <mic@...ikod.net>
>> Cc: Alexei Starovoitov <ast@...nel.org>
>> Cc: Andy Lutomirski <luto@...capital.net>
>> Cc: Daniel Borkmann <daniel@...earbox.net>
>> Cc: Kees Cook <keescook@...omium.org>
>> ---
>
>
>>
>> + if (unlikely(in_interrupt())) {
>
> IMO security hooks have no business being called from interrupts.
> Aren't they all synchronous things done by tasks? Interrupts are
> driver things.
>
> Are you trying to check for page faults and such?
Yes, that was the idea you did put in my mind. Not sure how to deal with
this.
Download attachment "signature.asc" of type "application/pgp-signature" (456 bytes)
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
