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From: patchwork-bot+netdevbpf@kernel.org
To: Amery Hung <ameryhung@gmail.com>
Cc: bpf@vger.kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	alexei.starovoitov@gmail.com, martin.lau@kernel.org,
	kernel-team@meta.com
Subject: Re: [PATCH bpf-next v1 1/2] bpf: Do not allow tail call in strcut_ops program with __ref argument
Date: Fri, 21 Feb 2025 02:50:36 +0000	[thread overview]
Message-ID: <174010623604.1561130.8352208858606703024.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250220221532.1079331-1-ameryhung@gmail.com>

Hello:

This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Thu, 20 Feb 2025 14:15:31 -0800 you wrote:
> Reject struct_ops programs with refcounted kptr arguments (arguments
> tagged with __ref suffix) that tail call. Once a refcounted kptr is
> passed to a struct_ops program from the kernel, it can be freed or
> xchged into maps. As there is no guarantee a callee can get the same
> valid refcounted kptr in the ctx, we cannot allow such usage.
> 
> Signed-off-by: Amery Hung <ameryhung@gmail.com>
> 
> [...]

Here is the summary with links:
  - [bpf-next,v1,1/2] bpf: Do not allow tail call in strcut_ops program with __ref argument
    https://git.kernel.org/bpf/bpf-next/c/38f1e66abd18
  - [bpf-next,v1,2/2] selftests/bpf: Test struct_ops program with __ref arg calling bpf_tail_call
    https://git.kernel.org/bpf/bpf-next/c/63817c771194

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



      parent reply	other threads:[~2025-02-21  2:50 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-20 22:15 [PATCH bpf-next v1 1/2] bpf: Do not allow tail call in strcut_ops program with __ref argument Amery Hung
2025-02-20 22:15 ` [PATCH bpf-next v1 2/2] selftests/bpf: Test struct_ops program with __ref arg calling bpf_tail_call Amery Hung
2025-02-21  0:50   ` Eduard Zingerman
2025-02-21  0:08 ` [PATCH bpf-next v1 1/2] bpf: Do not allow tail call in strcut_ops program with __ref argument Eduard Zingerman
2025-02-21  2:50 ` patchwork-bot+netdevbpf [this message]

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