From: Daniel Borkmann <daniel@iogearbox.net>
To: Alexei Starovoitov <ast@fb.com>,
"David S . Miller" <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
Brendan Gregg <bgregg@netflix.com>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Wang Nan <wangnan0@huawei.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@fb.com
Subject: Re: [PATCH net-next 1/6] bpf: support 8-byte metafield access
Date: Tue, 30 Aug 2016 01:44:34 +0200 [thread overview]
Message-ID: <57C4C8E2.6040903@iogearbox.net> (raw)
In-Reply-To: <1472265084-1767670-2-git-send-email-ast@fb.com>
On 08/27/2016 04:31 AM, Alexei Starovoitov wrote:
> The verifier supported only 4-byte metafields in
> struct __sk_buff and struct xdp_md. The metafields in upcoming
> struct bpf_perf_event are 8-byte to match register width in struct pt_regs.
> Teach verifier to recognize 8-byte metafield access.
> The patch doesn't affect safety of sockets and xdp programs.
> They check for 4-byte only ctx access before these conditions are hit.
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
next prev parent reply other threads:[~2016-08-29 23:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-27 2:31 [PATCH net-next 0/6] perf, bpf: add support for bpf in sw/hw perf_events Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 1/6] bpf: support 8-byte metafield access Alexei Starovoitov
2016-08-29 23:44 ` Daniel Borkmann [this message]
2016-08-27 2:31 ` [PATCH net-next 2/6] bpf: introduce BPF_PROG_TYPE_PERF_EVENT program type Alexei Starovoitov
2016-08-30 0:14 ` Daniel Borkmann
2016-08-27 2:31 ` [PATCH net-next 3/6] bpf: perf_event progs should only use preallocated maps Alexei Starovoitov
2016-08-30 0:30 ` Daniel Borkmann
2016-08-27 2:31 ` [PATCH net-next 4/6] perf, bpf: add perf events core support for BPF_PROG_TYPE_PERF_EVENT programs Alexei Starovoitov
2016-08-29 12:17 ` Peter Zijlstra
2016-08-31 3:40 ` Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 5/6] samples/bpf: add perf_event+bpf example Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 6/6] samples/bpf: add sampleip example Alexei Starovoitov
2016-08-29 10:58 ` [PATCH net-next 0/6] perf, bpf: add support for bpf in sw/hw perf_events Peter Zijlstra
2016-08-29 23:08 ` Alexei Starovoitov
2016-08-29 12:19 ` Peter Zijlstra
2016-08-30 2:27 ` Brendan Gregg
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=57C4C8E2.6040903@iogearbox.net \
--to=daniel@iogearbox.net \
--cc=acme@infradead.org \
--cc=ast@fb.com \
--cc=bgregg@netflix.com \
--cc=davem@davemloft.net \
--cc=kernel-team@fb.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=peterz@infradead.org \
--cc=wangnan0@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox