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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.