From: Martin KaFai Lau <martin.lau@linux.dev>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org,
void@manifault.com, davemarchevsky@meta.com, tj@kernel.org,
memxor@gmail.com, netdev@vger.kernel.org, bpf@vger.kernel.org,
kernel-team@fb.com, davem@davemloft.net
Subject: Re: [PATCH bpf-next 4/8] bpf: Teach verifier that certain helpers accept NULL pointer.
Date: Tue, 4 Apr 2023 17:10:49 -0700 [thread overview]
Message-ID: <eb07aa5a-e44c-67b7-e9c9-bd65602680ae@linux.dev> (raw)
In-Reply-To: <20230404045029.82870-5-alexei.starovoitov@gmail.com>
On 4/3/23 9:50 PM, Alexei Starovoitov wrote:
> diff --git a/net/core/filter.c b/net/core/filter.c
> index 1f2abf0f60e6..727c5269867d 100644
> --- a/net/core/filter.c
> +++ b/net/core/filter.c
> @@ -4998,7 +4998,7 @@ const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto = {
> .func = bpf_get_socket_ptr_cookie,
> .gpl_only = false,
> .ret_type = RET_INTEGER,
> - .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON,
> + .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON | PTR_MAYBE_NULL,
I think the bpf_skc_to_* helpers (eg. bpf_skc_to_tcp_sock) also need similar
change. They are available to tracing also. It can be a follow-up. The patch set
lgtm.
next prev parent reply other threads:[~2023-04-05 0:11 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-04 4:50 [PATCH bpf-next 0/8] bpf: Follow up to RCU enforcement in the verifier Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 1/8] bpf: Invoke btf_struct_access() callback only for writes Alexei Starovoitov
2023-04-04 23:29 ` Andrii Nakryiko
2023-04-04 4:50 ` [PATCH bpf-next 2/8] bpf: Remove unused arguments from btf_struct_access() Alexei Starovoitov
2023-04-04 23:31 ` Andrii Nakryiko
2023-04-04 4:50 ` [PATCH bpf-next 3/8] bpf: Refactor btf_nested_type_is_trusted() Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 4/8] bpf: Teach verifier that certain helpers accept NULL pointer Alexei Starovoitov
2023-04-04 14:46 ` David Vernet
2023-04-04 20:17 ` Alexei Starovoitov
2023-04-04 20:44 ` David Vernet
2023-04-05 0:10 ` Martin KaFai Lau [this message]
2023-04-05 0:17 ` Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 5/8] bpf: Refactor NULL-ness check in check_reg_type() Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 6/8] bpf: Allowlist few fields similar to __rcu tag Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 7/8] bpf: Undo strict enforcement for walking untagged fields Alexei Starovoitov
2023-04-04 4:50 ` [PATCH bpf-next 8/8] selftests/bpf: Add tracing tests for walking skb and req Alexei Starovoitov
2023-04-04 14:51 ` [PATCH bpf-next 0/8] bpf: Follow up to RCU enforcement in the verifier David Vernet
2023-04-05 0:02 ` Andrii Nakryiko
2023-04-05 0:16 ` Alexei Starovoitov
2023-04-05 1:51 ` Jakub Kicinski
2023-04-05 17:22 ` Andrii Nakryiko
2023-04-05 18:19 ` Jakub Kicinski
2023-04-05 20:11 ` Andrii Nakryiko
2023-04-06 5:13 ` Alexei Starovoitov
2023-04-06 15:42 ` Jakub Kicinski
2023-04-07 1:17 ` Alexei Starovoitov
2023-04-07 1:23 ` Jakub Kicinski
2023-04-07 1:32 ` Alexei Starovoitov
2023-04-07 1:57 ` Jakub Kicinski
2023-04-05 19:24 ` Daniel Borkmann
2023-04-05 0:10 ` patchwork-bot+netdevbpf
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=eb07aa5a-e44c-67b7-e9c9-bd65602680ae@linux.dev \
--to=martin.lau@linux.dev \
--cc=alexei.starovoitov@gmail.com \
--cc=andrii@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=davemarchevsky@meta.com \
--cc=kernel-team@fb.com \
--cc=martin.lau@kernel.org \
--cc=memxor@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=tj@kernel.org \
--cc=void@manifault.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;
as well as URLs for NNTP newsgroup(s).