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Subject: Re: [PATCH bpf v3] riscv,
 bpf: Emit fixed-length instructions for BPF_PSEUDO_FUNC
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <167035741569.3897.9540113126251004476.git-patchwork-notify@kernel.org>
Date:   Tue, 06 Dec 2022 20:10:15 +0000
References: <20221206091410.1584784-1-pulehui@huaweicloud.com>
In-Reply-To: <20221206091410.1584784-1-pulehui@huaweicloud.com>
To:     Pu Lehui <pulehui@huaweicloud.com>
Cc:     bpf@vger.kernel.org, linux-riscv@lists.infradead.org,
        linux-kernel@vger.kernel.org, bjorn@kernel.org, ast@kernel.org,
        daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev,
        song@kernel.org, yhs@fb.com, john.fastabend@gmail.com,
        kpsingh@kernel.org, sdf@google.com, haoluo@google.com,
        jolsa@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com,
        aou@eecs.berkeley.edu, pulehui@huawei.com
Precedence: bulk

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Tue,  6 Dec 2022 17:14:10 +0800 you wrote:
> From: Pu Lehui <pulehui@huawei.com>
> 
> For BPF_PSEUDO_FUNC instruction, verifier will refill imm with
> correct addresses of bpf_calls and then run last pass of JIT.
> Since the emit_imm of RV64 is variable-length, which will emit
> appropriate length instructions accorroding to the imm, it may
> broke ctx->offset, and lead to unpredictable problem, such as
> inaccurate jump. So let's fix it with fixed-length instructions.
> 
> [...]

Here is the summary with links:
  - [bpf,v3] riscv, bpf: Emit fixed-length instructions for BPF_PSEUDO_FUNC
    https://git.kernel.org/bpf/bpf-next/c/b54b6003612a

You are awesome, thank you!
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