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Date:   Thu, 09 May 2019 09:32:38 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH net] macvlan: disable SIOCSHWTSTAMP in container

From: Hangbin Liu <>
Date: Thu,  9 May 2019 14:54:08 +0800

> Miroslav pointed that with NET_ADMIN enabled in container, a normal user
> could be mapped to root and is able to change the real device's rx
> filter via ioctl on macvlan, which would affect the other ptp process on
> host. Fix it by disabling SIOCSHWTSTAMP in container.
> Fixes: 254c0a2bfedb ("macvlan: pass get_ts_info and SIOC[SG]HWTSTAMP ioctl to real device")
> Signed-off-by: Hangbin Liu <>

Applied and queued up for -stable.

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