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Date:   Tue, 24 May 2022 15:25:01 +0200
From:   Oleg Nesterov <oleg@redhat.com>
To:     "Eric W. Biederman" <ebiederm@xmission.com>
Cc:     linux-kernel@vger.kernel.org, rjw@rjwysocki.net, mingo@kernel.org,
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        Will Deacon <will@kernel.org>, tj@kernel.org,
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        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH 06/16] ptrace: Remove unnecessary locking in
 ptrace_(get|set)siginfo
Message-ID: <20220524132500.GC14347@redhat.com>
References: <871qwq5ucx.fsf_-_@email.froward.int.ebiederm.org>
 <20220518225355.784371-6-ebiederm@xmission.com>
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On 05/18, Eric W. Biederman wrote:
>
> Since commit 9899d11f6544 ("ptrace: ensure arch_ptrace/ptrace_request
> can never race with SIGKILL") it has been unnecessary for
> ptrace_getsiginfo and ptrace_setsiginfo to use lock_task_sighand.

ACK