netdev - Re: [PATCH net 2/2] xfrm: annotate data-race around use

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Message-Id: <ec7724da-65ea-45d9-b0b1-990278202ecc@app.fastmail.com>
Date:   Thu, 26 Jan 2023 13:05:31 +0100
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Eric Dumazet" <edumazet@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Jakub Kicinski" <kuba@...nel.org>,
        "Paolo Abeni" <pabeni@...hat.com>,
        "Steffen Klassert" <steffen.klassert@...unet.com>
Cc:     Netdev <netdev@...r.kernel.org>, eric.dumazet@...il.com,
        syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH net 2/2] xfrm: annotate data-race around use_time

On Thu, Jan 26, 2023, at 12:21, Eric Dumazet wrote:
> KCSAN reported multiple cpus can update use_time
> at the same time.
>
> Adds READ_ONCE()/WRITE_ONCE() annotations.
>
> Note that 32bit arches are not fully protected,
> but they will probably no longer be supported/used in 2106.
>

Acked-by: Arnd Bergmann <arnd@...db.de>