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Date: Fri, 27 Sep 2024 14:37:26 +0200
From: Frederic Weisbecker <frederic@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Anna-Maria Behnsen <anna-maria@linutronix.de>,
	John Stultz <jstultz@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
	Eric Biederman <ebiederm@xmission.com>,
	Oleg Nesterov <oleg@redhat.com>
Subject: Re: [patch v4 02/27] signal: Prevent user space from setting
 si_sys_private
Message-ID: <ZvanBnJrf8e2_d1A@localhost.localdomain>
References: <20240927083900.989915582@linutronix.de>
 <20240927084817.014903652@linutronix.de>
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Le Fri, Sep 27, 2024 at 10:48:41AM +0200, Thomas Gleixner a écrit :
> From: Thomas Gleixner <tglx@linutronix.de>
> 
> The si_sys_private member of siginfo is used to handle posix-timer rearming
> from the signal delivery path. Prevent user space from setting it as that
> creates inconsistent state.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Funny that this field is exposed to userspace.

Anyway:

Acked-by: Frederic Weisbecker <frederic@kernel.org>