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Date:   Thu, 18 Jul 2019 17:00:58 +0200
From:   Oleg Nesterov <oleg@redhat.com>
To:     "Joel Fernandes (Google)" <joel@joelfernandes.org>
Cc:     linux-kernel@vger.kernel.org,
        Suren Baghdasaryan <surenb@google.com>,
        kernel-team@android.com, Andrea Arcangeli <aarcange@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Christian Brauner <christian@brauner.io>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH RFC v1] pidfd: fix a race in setting exit_state for pidfd
 polling
Message-ID: <20190718150057.GB13355@redhat.com>
References: <20190717172100.261204-1-joel@joelfernandes.org>
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On 07/17, Joel Fernandes (Google) wrote:
>
> exit_notify
>   do_notify_parent
>     do_notify_pidfd
>   tsk->exit_state = EXIT_DEAD

OOPS. Somehow I thought it sets exit_state before do_notify_parent(),
I didn't even bother to verify this when I reviewed pidfd_poll()...

Sorry, can't read the patch today, will do tomorrow.

Oleg.