netdev - Re: [PATCH next] sysctl: expose all net/core sysctls inside netns

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Message-ID: <20221222181250.23c6a4ee@kernel.org>
Date:   Thu, 22 Dec 2022 18:12:50 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Mahesh Bandewar <maheshb@...gle.com>
Cc:     Netdev <netdev@...r.kernel.org>,
        Mahesh Bandewar <mahesh@...dewar.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH next] sysctl: expose all net/core sysctls inside netns

On Thu, 22 Dec 2022 11:10:05 -0800 Mahesh Bandewar wrote:
> All were not visible to the non-priv users inside netns. However,
> with 4ecb90090c84 ("sysctl: allow override of /proc/sys/net with
> CAP_NET_ADMIN"), these vars are protected from getting modified.
> A proc with capable(CAP_NET_ADMIN) can change the values so
> not having them visible inside netns is just causing nuisance to
> process that check certain values (e.g. net.core.somaxconn) and
> see different behavior in root-netns vs. other-netns

SG, but net-next is closed, please repost after New Year.