From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794513606; b=05af1M9u7P+h9IjyHjTlicERzwikYUip2oI1vbEmLUrIhgVD3MeUB18hM01O08ZyzAUh yhi69+4ieD6r0/rhiJ5wG0vFUURRT5pyoknJE53T+wsNO9eaRclHh43BzngNPqLRnwYsA 8fDP21b1WPauqkQIWLd1GERDmWCxiAYF1ayAJie+17PKU+irDB8YvElRpyCqoNUgsVQkx dDGTl1skPnkn+34P91hK1GqI9/BHjHpf1lmpiAYVW+1WZT/jSveV1ZompNbYJg5y+ZVwV TZgCC1uggezmB/Fv60VRyMMBUR24zLUdsIlBfHENkuLIBoSvXsz8x4qHqeeHX3qYWsw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794513606; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=eADNhIR/8AdgtYlqwva/DUsocjsGydfTGfDeMLQXaJg=; b=o6ZMCxmlmcoLHx7SLc4fmi9w4qm5sg4ChoQGuNhqwmf3rfRMO3as0wcMukKMWO7Pklnr nAs1m0UhpmQACLmzrDMmywGu4d9OCJrLIoI2p5Ct8ne4i7DvAIzTF7DRgxpERo7dhtGcu dQ1ZXCItKB1FVJzP4eqrV05AD08pVf78M3wBPMrhuF0QVOzjLNxpWOHJcFcs8OVDHEhao vxmvgRqE0H9vp3IAdyIufx8dO/GHdNPYJdfBtdyGqMKTbQImMJzVojvXTRkR6VbhUEFR6 OgvcJXRfoHCtV9cLyWP6vHlU8z8BlPbQsNB/zStIoW9ufo383n06EEFbIfXxSFBL2Mw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=jQAPZXoX; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E244E606A32D for ; Thu, 12 Nov 2026 20:00:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=jQAPZXoX Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84DFE1F000C4; Thu, 12 Nov 2026 20:00:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794513605; bh=eADNhIR/8AdgtYlqwva/DUsocjsGydfTGfDeMLQXaJg=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=jQAPZXoXGF6I0T3JJxItMynoQ4Rv84Nqjf1oBxnxQ4IAU6YVBZUbSzMUETPJzmgFe /B4AgQADDqGCiA2uwo7jcABq0BHNsNUUQ3z/JwHcltQN3jEJGabsBEh7mubBA+EAIm H6EwA6JHt3sCKuyRCZz551u/G5wH4uiUiWzhseswqSyB30Pa9InD+XuTRgnwX43PYp 24rMRzg2ddp7l2YJYoUR+wc4oo5ZjkP8hDUdZCah8wvbN5RrcuiegJXmh/qrPIfIMj gthxC9lkUZHE72eFxdW6/+FKiPLnVlJgZGnQn8FCp6irELusvkUFN0IlTfvF8S9LjH 4N5mjmvHpPC6Q== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 7737F3926259; Thu, 12 Nov 2026 20:00:05 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: bpf@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf v3] bpf, sockmap: Fix ring capacity invariant break in bpf_msg_push_data() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179451360403.621483.1862904929520371421.git-patchwork-notify@kernel.org> Date: Thu, 12 Nov 2026 20:00:04 +0000 References: In-Reply-To: To: bo cao Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com Hello: This patch was applied to bpf/bpf.git (master) by Alexei Starovoitov : On Thu, 12 Nov 2026 15:09:53 +0800 you wrote: > From: Bo Cao > > A push at msg->size on a full ring reads the length of the free slot. > It is 0, so nothing is copied and sg.end moves onto sg.start. > The ring looks empty and the next push overwrites live elements. > The prog needs CAP_BPF and CAP_NET_ADMIN. > > [...] Here is the summary with links: - [bpf,v3] bpf, sockmap: Fix ring capacity invariant break in bpf_msg_push_data() https://git.kernel.org/bpf/bpf/c/f6562cd116a0 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html