From: Andrei Vagin <avagin@gmail.com>
To: Tycho Andersen <tycho@tycho.pizza>
Cc: Andrei Vagin <avagin@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
linux-kernel@vger.kernel.org, Kees Cook <keescook@chromium.org>,
Christian Brauner <brauner@kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Juri Lelli <juri.lelli@redhat.com>,
Peter Oskolkov <posk@google.com>, Will Drewry <wad@chromium.org>
Subject: Re: [PATCH 1/5] seccomp: don't use semaphore and wait_queue together
Date: Fri, 13 Jan 2023 13:51:14 -0800 [thread overview]
Message-ID: <CANaxB-wVizq9RbSmidH6iSU2ymbHcpZc0k7AaA727qk-q78c0A@mail.gmail.com> (raw)
In-Reply-To: <Y8AgC99AUeMjFWKt@tycho.pizza>
On Thu, Jan 12, 2023 at 6:58 AM Tycho Andersen <tycho@tycho.pizza> wrote:
>
> On Tue, Jan 10, 2023 at 01:30:06PM -0800, Andrei Vagin wrote:
> > From: Andrei Vagin <avagin@gmail.com>
> >
> > The main reason is to use new wake_up helpers that will be added in the
> > following patches. But here are a few other reasons:
> >
> > * if we use two different ways, we always need to call them both. This
> > patch fixes seccomp_notify_recv where we forgot to call wake_up_poll
> > in the error path.
>
> [snip]
>
> > @@ -1515,7 +1546,8 @@ static long seccomp_notify_recv(struct seccomp_filter *filter,
> > if (should_sleep_killable(filter, knotif))
> > complete(&knotif->ready);
> > knotif->state = SECCOMP_NOTIFY_INIT;
> > - up(&filter->notif->request);
> > + atomic_add(1, &filter->notif->requests);
> > + wake_up_poll(&filter->wqh, EPOLLIN | EPOLLRDNORM);
> > }
> > mutex_unlock(&filter->notify_lock);
> > }
>
> I wonder if this shouldn't be a separate patch that you can send now
> independent of this series?
You are right. It is a bug fix and I can send it in a separate patch.
I didn't expect it would take so long to merge the whole set.
Thanks,
Andrei
next prev parent reply other threads:[~2023-01-13 21:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-10 21:30 [PATCH 0/5 v3 RESEND] seccomp: add the synchronous mode for seccomp_unotify Andrei Vagin
2023-01-10 21:30 ` [PATCH 1/5] seccomp: don't use semaphore and wait_queue together Andrei Vagin
2023-01-12 14:58 ` Tycho Andersen
2023-01-13 21:51 ` Andrei Vagin [this message]
2023-01-16 9:48 ` Peter Zijlstra
2023-01-10 21:30 ` [PATCH 2/5] sched: add WF_CURRENT_CPU and externise ttwu Andrei Vagin
2023-01-12 7:35 ` Chen Yu
2023-01-13 21:39 ` Andrei Vagin
2023-01-14 15:59 ` Chen Yu
2023-01-18 6:10 ` Andrei Vagin
2023-01-10 21:30 ` [PATCH 3/5] sched: add a few helpers to wake up tasks on the current cpu Andrei Vagin
2023-01-16 9:59 ` Peter Zijlstra
2023-01-19 6:45 ` Andrei Vagin
2023-01-19 10:09 ` Peter Zijlstra
2023-01-10 21:30 ` [PATCH 4/5] seccomp: add the synchronous mode for seccomp_unotify Andrei Vagin
2023-01-12 15:00 ` Tycho Andersen
2023-01-14 1:16 ` Andrei Vagin
2023-01-10 21:30 ` [PATCH 5/5] selftest/seccomp: add a new test for the sync mode of seccomp_user_notify Andrei Vagin
-- strict thread matches above, loose matches on Subject: below --
2022-11-11 7:31 [PATCH 0/5 v3] seccomp: add the synchronous mode for seccomp_unotify Andrei Vagin
2022-11-11 7:31 ` [PATCH 1/5] seccomp: don't use semaphore and wait_queue together Andrei Vagin
2022-10-20 1:10 [PATCH 0/5 v2] seccomp: add the synchronous mode for seccomp_unotify Andrei Vagin
2022-10-20 1:10 ` [PATCH 1/5] seccomp: don't use semaphore and wait_queue together Andrei Vagin
2022-10-20 5:10 ` Kees Cook
2022-10-21 4:30 ` Andrei Vagin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CANaxB-wVizq9RbSmidH6iSU2ymbHcpZc0k7AaA727qk-q78c0A@mail.gmail.com \
--to=avagin@gmail.com \
--cc=avagin@google.com \
--cc=brauner@kernel.org \
--cc=dietmar.eggemann@arm.com \
--cc=juri.lelli@redhat.com \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=posk@google.com \
--cc=tycho@tycho.pizza \
--cc=vincent.guittot@linaro.org \
--cc=wad@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).