netdev - Re: [PATCH bpf-next 5/5] bpf, testing: Add selftest to read/write sockaddr from user space

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Date:   Fri, 25 Oct 2019 16:36:23 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Alexei Starovoitov <ast@...nel.org>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        Ilya Leoshkevich <iii@...ux.ibm.com>
Subject: Re: [PATCH bpf-next 5/5] bpf, testing: Add selftest to read/write
 sockaddr from user space

On Fri, Oct 25, 2019 at 1:44 PM Daniel Borkmann <daniel@...earbox.net> wrote:
>
> Tested on x86-64 and Ilya was also kind enough to give it a spin on
> s390x, both passing with probe_user:OK there. The test is using the
> newly added bpf_probe_read_user() to dump sockaddr from connect call
> into BPF map and overrides the user buffer via bpf_probe_write_user():
>
>   # ./test_progs
>   [...]
>   #17 pkt_md_access:OK
>   #18 probe_user:OK
>   #19 prog_run_xattr:OK
>   [...]
>
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Tested-by: Ilya Leoshkevich <iii@...ux.ibm.com>
> ---

Acked-by: Andrii Nakryiko <andriin@...com>

>  .../selftests/bpf/prog_tests/probe_user.c     | 80 +++++++++++++++++++
>  .../selftests/bpf/progs/test_probe_user.c     | 33 ++++++++
>  2 files changed, 113 insertions(+)
>  create mode 100644 tools/testing/selftests/bpf/prog_tests/probe_user.c
>  create mode 100644 tools/testing/selftests/bpf/progs/test_probe_user.c

[...]