From: Tycho Andersen <tycho@tycho.ws>
To: Oleg Nesterov <oleg@redhat.com>
Cc: linux-kernel@vger.kernel.org,
containers@lists.linux-foundation.org,
Kees Cook <keescook@chromium.org>,
Andy Lutomirski <luto@amacapital.net>,
"Eric W . Biederman" <ebiederm@xmission.com>,
"Serge E . Hallyn" <serge@hallyn.com>,
Christian Brauner <christian.brauner@ubuntu.com>,
Tyler Hicks <tyhicks@canonical.com>,
Akihiro Suda <suda.akihiro@lab.ntt.co.jp>,
"Tobin C . Harding" <me@tobin.cc>
Subject: Re: [PATCH v2 1/4] seccomp: add a return code to trap to userspace
Date: Thu, 24 May 2018 09:28:27 -0600 [thread overview]
Message-ID: <20180524152827.GD21405@cisco> (raw)
In-Reply-To: <20180517154637.GC8586@redhat.com>
Hi Oleg,
On Thu, May 17, 2018 at 05:46:37PM +0200, Oleg Nesterov wrote:
> On 05/17, Tycho Andersen wrote:
> >
> > > From lockdep pov this loop tries to take the same lock twice or more, it shoul
> > > complain.
> >
> > I didn't, but I guess that's because it's not trying to take the same lock
> > twice -- the pointer cur is changing in the loop.
>
> Yes, I see. But this is the same lock for lockdep, it has the same class.
I finally figured this out, I needed CONFIG_PROVE_LOCKING=y too,
anyway, I've added the nesting annotations for v3. Thanks!
Tycho
next prev parent reply other threads:[~2018-05-24 15:28 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-17 15:12 [PATCH v2 0/4] seccomp trap to userspace Tycho Andersen
2018-05-17 15:12 ` [PATCH v2 1/4] seccomp: add a return code to " Tycho Andersen
2018-05-17 15:33 ` Oleg Nesterov
2018-05-17 15:39 ` Tycho Andersen
2018-05-17 15:46 ` Oleg Nesterov
2018-05-24 15:28 ` Tycho Andersen [this message]
2018-05-18 14:04 ` Christian Brauner
2018-05-18 15:21 ` Tycho Andersen
2018-05-19 0:14 ` kbuild test robot
2018-05-19 5:01 ` kbuild test robot
2018-05-21 22:55 ` Tycho Andersen
2018-05-17 15:12 ` [PATCH v2 2/4] seccomp: make get_nth_filter available outside of CHECKPOINT_RESTORE Tycho Andersen
2018-05-17 15:12 ` [PATCH v2 3/4] seccomp: add a way to get a listener fd from ptrace Tycho Andersen
2018-05-17 15:41 ` Oleg Nesterov
2018-05-17 15:57 ` Tycho Andersen
2018-05-17 15:59 ` Tycho Andersen
2018-05-18 14:05 ` Christian Brauner
2018-05-18 15:10 ` Tycho Andersen
2018-05-17 15:12 ` [PATCH v2 4/4] seccomp: add support for passing fds via USER_NOTIF Tycho Andersen
2018-05-18 14:03 ` [PATCH v2 0/4] seccomp trap to userspace Christian Brauner
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