From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 375887F for ; Sun, 10 Dec 2023 03:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W3A0kimf" Received: by smtp.kernel.org (Postfix) with ESMTPS id 86F67C433C9; Sun, 10 Dec 2023 03:20:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702178422; bh=qRLsQabxHlv3Wgla2OfXv1jtjzJEhzSrks56HtlwH+g=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=W3A0kimfHA2f5AfosNEHYDNG/RM7tdxob9ZCDJcgOFhTEjyJ09kiXLiU4043MsG24 ibCVf7j19WzB6bq7x5mG9uVoP1oD8n7stosSv9qa1mNcjezuVEQlmsQq88ndENysDh ZuqGECS5UfdZwC++7B4fsvpohS/wAkAlQfDiuezcEViB+H5hQyHIevpNL45njflepJ VXq03KibPUUqi/vwfo4JZhYS2ft0XV76mkOoVrkvhAcG0lF3veasKLUtGiZYxE+kmb aXHtU/o9hNb6Xfm9lsfPlwEb7kwqwmGOT1LppYga04NpZCbS3kRY+vVlEErBzh5ZDS CMzV3ww6drkPg== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 6E8FCC04DD9; Sun, 10 Dec 2023 03:20:22 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next 1/2] bpf: handle fake register spill to stack with BPF_ST_MEM instruction From: patchwork-bot+netdevbpf@kernel.org Message-Id: <170217842244.20852.7194635318072673450.git-patchwork-notify@kernel.org> Date: Sun, 10 Dec 2023 03:20:22 +0000 References: <20231209010958.66758-1-andrii@kernel.org> In-Reply-To: <20231209010958.66758-1-andrii@kernel.org> To: Andrii Nakryiko Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, martin.lau@kernel.org, kernel-team@meta.com Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Fri, 8 Dec 2023 17:09:57 -0800 you wrote: > When verifier validates BPF_ST_MEM instruction that stores known > constant to stack (e.g., *(u64 *)(r10 - 8) = 123), it effectively spills > a fake register with a constant (but initially imprecise) value to > a stack slot. Because read-side logic treats it as a proper register > fill from stack slot, we need to mark such stack slot initialization as > INSN_F_STACK_ACCESS instruction to stop precision backtracking from > missing it. > > [...] Here is the summary with links: - [bpf-next,1/2] bpf: handle fake register spill to stack with BPF_ST_MEM instruction https://git.kernel.org/bpf/bpf-next/c/482d548d40b0 - [bpf-next,2/2] selftests/bpf: validate fake register spill/fill precision backtracking logic https://git.kernel.org/bpf/bpf-next/c/7d8ed51bcb32 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html