netdev - Re: [PATCH bpf] selftests/bpf: test ringbuf mmap read-only and read-write restrictions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 14 May 2021 16:11:36 -0700
From:   Song Liu <song@...nel.org>
To:     Andrii Nakryiko <andrii@...nel.org>
Cc:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
Subject: Re: [PATCH bpf] selftests/bpf: test ringbuf mmap read-only and
 read-write restrictions

On Fri, May 14, 2021 at 1:11 PM Andrii Nakryiko <andrii@...nel.org> wrote:
>
> Extend ringbuf selftest to validate read/write and read-only restrictions on
> memory mapping consumer/producer/data pages. Ensure no "escalations" from
> PROT_READ to PROT_WRITE/PROT_EXEC is allowed. And test that mremap() fails to
> expand mmap()'ed area.
>
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
> Signed-off-by: Andrii Nakryiko <andrii@...nel.org>

Acked-by: Song Liu <songliubraving@...com>