linux-kernel - Re: [PATCH for-next/seccomp 1/2] selftests/seccomp: Add SKIPs for failed unshare()

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Message-ID: <20200710191023.GA2700617@cisco>
Date:   Fri, 10 Jul 2020 13:10:23 -0600
From:   Tycho Andersen <tycho@...ho.ws>
To:     Kees Cook <keescook@...omium.org>
Cc:     Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH for-next/seccomp 1/2] selftests/seccomp: Add SKIPs for
 failed unshare()

On Fri, Jul 10, 2020 at 11:51:55AM -0700, Kees Cook wrote:
> Running the seccomp tests as a regular user shouldn't just fail tests
> that require CAP_SYS_ADMIN (for getting a PID namespace). Instead,
> detect those cases and SKIP them.

But if we unshare NEWUSER at the same time as NEWPID, shouldn't we
always be ns_capable(CAP_SYS_ADMIN)?

Tycho