From: "Alexei Starovoitov" <alexei.starovoitov@gmail.com>
To: "Yonghong Song" <yonghong.song@linux.dev>, <bpf@vger.kernel.org>
Cc: "Andrii Nakryiko" <andrii@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Eduard Zingerman" <eddyz87@gmail.com>, <kernel-team@fb.com>
Subject: Re: [PATCH bpf-next v8 07/22] bpf: Follow an unwind to its landing pad in the verifier
Date: Sat, 03 Oct 2026 12:23:40 +0000 [thread overview]
Message-ID: <DLV784DBX12N.12EC4LTWZLKXG@gmail.com> (raw)
In-Reply-To: <20261001133042.1339539-1-yonghong.song@linux.dev>
On Thu, Oct 01, 2026 at 06:30 AM Yonghong Song <yonghong.song@linux.dev> wrote:
in addition to what bpf-ci found...
can we let both kfuncs go through check_kfunc_call(), like bpf_throw()
does, and follow the unwind after it?
Then there is nothing to open code here and no need for
check_kfunc_allowed() and check_kfunc_allowed_only().
pw-bot: cr
next prev parent reply other threads:[~2026-10-03 12:23 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 13:30 [PATCH bpf-next v8 00/22] bpf: Run exception cleanup landing pads when bpf_unwind() unwinds Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 01/22] bpf: Pack bpf_insn_aux_data flags into bit fields Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 02/22] bpf: Accept the compiler's exception cleanup table at program load Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 03/22] bpf: Add the bpf_unwind() and bpf_unwind_resume() kfuncs Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 04/22] bpf: Add lookups for exception cleanup resumes and landing pads Yonghong Song
2026-10-01 13:48 ` sashiko-bot
2026-10-02 18:17 ` Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 05/22] bpf: Prepare for an exception cleanup table before the CFG walk Yonghong Song
2026-10-01 14:31 ` bot+bpf-ci
2026-10-02 19:06 ` Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 06/22] bpf: Make exception landing pads reachable in the CFG Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 07/22] bpf: Follow an unwind to its landing pad in the verifier Yonghong Song
2026-10-01 13:50 ` sashiko-bot
2026-10-02 19:31 ` Yonghong Song
2026-10-01 14:31 ` bot+bpf-ci
2026-10-02 20:49 ` Yonghong Song
2026-10-03 12:23 ` Alexei Starovoitov [this message]
2026-10-04 17:56 ` Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 08/22] bpf: Require an unwind to leave a frame holding what it entered with Yonghong Song
2026-10-01 14:31 ` bot+bpf-ci
2026-10-02 21:10 ` Yonghong Song
2026-10-03 12:25 ` Alexei Starovoitov
2026-10-04 17:59 ` Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 09/22] bpf: Refuse a landing pad that does not resume Yonghong Song
2026-10-03 12:25 ` Alexei Starovoitov
2026-10-04 18:26 ` Yonghong Song
2026-10-01 13:30 ` [PATCH bpf-next v8 10/22] bpf: Do not use a private stack for a program that can unwind Yonghong Song
2026-10-01 13:53 ` sashiko-bot
2026-10-02 21:38 ` Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 11/22] bpf: Dispatch cleanup pads by rewriting return addresses Yonghong Song
2026-10-01 14:31 ` bot+bpf-ci
2026-10-02 21:48 ` Yonghong Song
2026-10-03 12:26 ` Alexei Starovoitov
2026-10-04 18:28 ` Yonghong Song
2026-10-04 18:29 ` Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 12/22] bpf, x86: Dispatch exception cleanup pads at run time Yonghong Song
2026-10-01 13:49 ` sashiko-bot
2026-10-02 21:54 ` Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 13/22] bpf, arm64: " Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 14/22] libbpf: Resolve the compiler's _Unwind_Resume to the kernel's kfunc Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 15/22] libbpf: Add cleanup_info to bpf_prog_load_opts Yonghong Song
2026-10-01 13:46 ` sashiko-bot
2026-10-02 22:09 ` Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 16/22] libbpf: Collect .bpf_cleanup records and pass them to the kernel Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 17/22] libbpf: Carry the exception cleanup table through the light skeleton Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 18/22] libbpf: Let the static linker carry .bpf_cleanup relocations Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 19/22] selftests/bpf: Add end-to-end and negative .bpf_cleanup exception tests Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 20/22] selftests/bpf: Add __set_global() and __ret_global() test tags Yonghong Song
2026-10-01 13:31 ` [PATCH bpf-next v8 21/22] selftests/bpf: Cover more accepted .bpf_cleanup exception shapes Yonghong Song
2026-10-01 13:32 ` [PATCH bpf-next v8 22/22] selftests/bpf: Load an exception cleanup program from a light skeleton Yonghong Song
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=DLV784DBX12N.12EC4LTWZLKXG@gmail.com \
--to=alexei.starovoitov@gmail.com \
--cc=andrii@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=eddyz87@gmail.com \
--cc=kernel-team@fb.com \
--cc=yonghong.song@linux.dev \
/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