linux-kernel - [PATCH 0/5] refcount_t and various related bits

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Date:   Fri, 03 Feb 2017 14:25:58 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     elena.reshetova@...el.com, gregkh@...uxfoundation.org,
        keescook@...omium.org, arnd@...db.de, tglx@...utronix.de,
        mingo@...nel.org, h.peter.anvin@...el.com, will.deacon@....com,
        dwindsor@...il.com, dhowells@...hat.com, peterz@...radead.org
Cc:     linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: [PATCH 0/5] refcount_t and various related bits

Hi all,

Here is the refcount_t patch and some related bits that I hacked up the past
few days while playing with it in order to make it generate less aweful code
(on x86_64).

I think we can start by merging the refcount_t and kref patches, the rest can
come later if so desired. New here is the Kconfig knob to turn warnings
off -- it significantly reduces the generated code while still avoiding
the UAF.

I added David Howells because both he and hpa have suggested something like
try_cmpxchg() in the past.