From: patchwork-bot+netdevbpf@kernel.org
To: Yiyang Chen <chenyy23@mails.tsinghua.edu.cn>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
eddyz87@gmail.com, memxor@gmail.com, john.fastabend@gmail.com,
martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev,
jolsa@kernel.org, emil@etsalapatis.com, shuah@kernel.org,
vmalik@redhat.com, leon.hwang@linux.dev, davemarchevsky@fb.com,
bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH bpf-next v4 0/2] bpf: Reject offset refcount acquire arguments
Date: Fri, 26 Jun 2026 12:27:57 +0000 [thread overview]
Message-ID: <178247687731.457674.9945546096682680522.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <cover.1782192383.git.chenyy23@mails.tsinghua.edu.cn>
Hello:
This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:
On Tue, 23 Jun 2026 06:11:08 +0000 you wrote:
> bpf_refcount_acquire() is modeled as returning a refcounted allocation
> base, but it currently accepts PTR_TO_BTF_ID | MEM_ALLOC arguments whose
> offset already points at an embedded graph node returned from a list or
> rbtree operation.
>
> At runtime the kfunc starts from the supplied pointer and adds the type's
> refcount offset. With a graph-node pointer, that starts from base +
> node_off, while the verifier treats the returned pointer as the allocation
> base. Reject non-zero fixed-offset arguments to keep the runtime operation
> and the verifier model aligned.
>
> [...]
Here is the summary with links:
- [bpf-next,v4,1/2] bpf: Reject offset refcount acquire arguments
https://git.kernel.org/bpf/bpf/c/931a577fc79e
- [bpf-next,v4,2/2] selftests/bpf: Cover refcount acquire node offsets
https://git.kernel.org/bpf/bpf/c/0371fb57a0c9
You are awesome, thank you!
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prev parent reply other threads:[~2026-06-26 12:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 6:11 [PATCH bpf-next v4 0/2] bpf: Reject offset refcount acquire arguments Yiyang Chen
2026-06-23 6:11 ` [PATCH bpf-next v4 1/2] " Yiyang Chen
2026-06-23 7:01 ` bot+bpf-ci
2026-06-23 21:52 ` Emil Tsalapatis
2026-06-25 21:30 ` Yonghong Song
2026-06-23 6:11 ` [PATCH bpf-next v4 2/2] selftests/bpf: Cover refcount acquire node offsets Yiyang Chen
2026-06-23 21:50 ` Emil Tsalapatis
2026-06-25 21:39 ` Yonghong Song
2026-06-26 12:27 ` patchwork-bot+netdevbpf [this message]
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