linux-kernel - Re: [PATCH bpf] bpf: don't accept cgroup local storage with zero value size

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Message-ID: <8e6010ef-4e72-d167-8016-dda3fbbf8e5e@iogearbox.net>
Date:   Tue, 2 Oct 2018 14:43:52 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Roman Gushchin <guro@...com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Kernel Team <Kernel-team@...com>,
        Alexei Starovoitov <ast@...nel.org>
Subject: Re: [PATCH bpf] bpf: don't accept cgroup local storage with zero
 value size

On 10/02/2018 04:41 AM, Roman Gushchin wrote:
> Explicitly forbid creating cgroup local storage maps with zero value
> size, as it makes no sense and might even cause a panic.
> 
> Reported-by: syzbot+18628320d3b14a5c459c@...kaller.appspotmail.com
> Signed-off-by: Roman Gushchin <guro@...com>
> Cc: Alexei Starovoitov <ast@...nel.org>
> Cc: Daniel Borkmann <daniel@...earbox.net>

Applied to bpf, thanks Roman!