linux-kernel - Re: [patch V6 09/11] rseq: Implement rseq_grant_slice

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Message-ID: <0cb26892-c68e-4a57-8029-8c582f868505@efficios.com>
Date: Tue, 16 Dec 2025 10:25:23 -0500
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
Cc: "Paul E. McKenney" <paulmck@...nel.org>, Boqun Feng
 <boqun.feng@...il.com>, Jonathan Corbet <corbet@....net>,
 Prakash Sangappa <prakash.sangappa@...cle.com>,
 Madadi Vineeth Reddy <vineethr@...ux.ibm.com>,
 K Prateek Nayak <kprateek.nayak@....com>,
 Steven Rostedt <rostedt@...dmis.org>,
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
 Randy Dunlap <rdunlap@...radead.org>, Peter Zijlstra <peterz@...radead.org>,
 Ron Geva <rongevarg@...il.com>, Waiman Long <longman@...hat.com>
Subject: Re: [patch V6 09/11] rseq: Implement rseq_grant_slice_extension()

On 2025-12-15 13:24, Thomas Gleixner wrote:
[...]
> In case that the user space access faults or invalid state is detected, the
> task is terminated with SIGSEGV.

It appears that only access faults trigger SIGSEGV. Perhaps removing
"or invalid state is detected" should be removed, or the code is missing
some state validation ?

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com