linux-kernel - Re: [PATCH bpf-next v2] libbpf: use SOCK_CLOEXEC when opening the netlink socket

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Date:   Wed, 17 Mar 2021 14:04:38 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Kumar Kartikeya Dwivedi <memxor@...il.com>, ast@...nel.org
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next v2] libbpf: use SOCK_CLOEXEC when opening the
 netlink socket

Kumar Kartikeya Dwivedi <memxor@...il.com> writes:

> Otherwise, there exists a small window between the opening and closing
> of the socket fd where it may leak into processes launched by some other
> thread.
>
> Fixes: 949abbe88436 ("libbpf: add function to setup XDP")
> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@...il.com>

Acked-by: Toke Høiland-Jørgensen <toke@...hat.com>