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From: Thomas Gleixner <tglx@kernel.org>
To: Frederic Weisbecker <frederic@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>, Oleg Nesterov
 <oleg@redhat.com>, Hyunwoo Kim <imv4bel@gmail.com>, brauner@kernel.org,
 peterz@infradead.org, anna-maria@linutronix.de,
 linux-kernel@vger.kernel.org
Subject: Re: [PATCH] signal: Prevent exec() race
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Date: Tue, 01 Sep 2026 17:14:46 +0200
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On Tue, Sep 01 2026 at 15:27, Frederic Weisbecker wrote:
> Le Tue, Sep 01, 2026 at 02:55:02PM +0200, Thomas Gleixner a =C3=A9crit :
>> On some far fetched completely out of order CPU that might be possible,
>> but it's moot as it's already established that we can't do that lockless
>> at this point.
>
> Sorry I probably missed something in the discussion, what can't we do
> lockless?

Flushing the signals.