Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   "Eric W. Biederman" <ebiederm@xmission.com>
To:     Keno Fischer <keno@juliacomputing.com>
Cc:     linux-kernel@vger.kernel.org, mingo@kernel.org,
        bigeasy@linutronix.de, Peter Zijlstra <peterz@infradead.org>,
        Jann Horn <jannh@google.com>,
        Kees Cook <keescook@chromium.org>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Robert O'Callahan <roc@pernos.co>, Kyle Huey <khuey@pernos.co>,
        Oleg Nesterov <oleg@redhat.com>
References: <20220421150248.667412396@infradead.org>
        <20220421150654.817117821@infradead.org>
        <87czhap9dy.fsf@email.froward.int.ebiederm.org>
        <878rrrh32q.fsf_-_@email.froward.int.ebiederm.org>
        <87k0b7v9yk.fsf_-_@email.froward.int.ebiederm.org>
        <87k0b0apne.fsf_-_@email.froward.int.ebiederm.org>
        <87a6bv6dl6.fsf_-_@email.froward.int.ebiederm.org>
        <87r13gd4xy.fsf_-_@email.froward.int.ebiederm.org>
Date:   Fri, 08 Jul 2022 17:25:31 -0500
In-Reply-To: <87r13gd4xy.fsf_-_@email.froward.int.ebiederm.org> (Eric
        W. Biederman's message of "Wed, 22 Jun 2022 11:43:37 -0500")
Message-ID: <87edyvgs2s.fsf@email.froward.int.ebiederm.org>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain
Subject: Re: [PATCH 0/3] ptrace: Stop supporting SIGKILL for PTRACE_EVENT_EXIT
Precedence: bulk

"Eric W. Biederman" <ebiederm@xmission.com> writes:

> Recently I had a conversation where it was pointed out to me that
> SIGKILL sent to a tracee stropped in PTRACE_EVENT_EXIT is quite
> difficult for a tracer to handle.
>
> Keeping SIGKILL working for anything after the process has been killed
> is also a real pain from an implementation point of view.
>
> So I am attempting to remove this wart in the userspace API and see
> if anyone cares.
>
> Eric W. Biederman (3):
>       signal: Ensure SIGNAL_GROUP_EXIT gets set in do_group_exit
>       signal: Guarantee that SIGNAL_GROUP_EXIT is set on process exit
>       signal: Drop signals received after a fatal signal has been processed
>
>  fs/coredump.c                |  2 +-
>  include/linux/sched/signal.h |  1 +
>  kernel/exit.c                | 20 +++++++++++++++++++-
>  kernel/fork.c                |  2 ++
>  kernel/signal.c              |  3 ++-
>  5 files changed, 25 insertions(+), 3 deletions(-)

RR folks any comments?

Did I properly understand what Keno Fischer was asking for when we
talked in person?

Eric