From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f178.google.com (mail-pf1-f178.google.com [209.85.210.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B934C194C7D; Fri, 13 Dec 2024 23:19:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734131947; cv=none; b=N8tEFrwMCV3Vm0L4saycuS8er7Mi6b3PciAvjp6lLWR3eZRaYn2sHrcC0CA1xkHt9mhMBcTLI/kNpHuKmWUSsy+topJY0ar7xWDnvyrCZ8ubWT+HR7+rK427SgSHah4ijKajMbbf6Y2nzyJsxV8Inin8YpA33rNnJ0AUMs3JfZM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734131947; c=relaxed/simple; bh=buSXj9Eu3v5WysNxEm8QcbC/XQhDnt9c4n4hd/cbp3o=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=iyOuS6PDUzWeAh5gZ8c9Rvm56UaQU7OSpPEN+5NXLy14ReFpvpvthZxXOVwT70xcGO6rlA2bgxSpkqKwrNYga/PmmL9kljlCBvPxKVR0BJFOio9PzZekoyTp5mOufC+mNnpFMsjXNJBBgtIx9aPOzJPg/mhFPqRafFfyFfFnxpw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=XebVGns7; arc=none smtp.client-ip=209.85.210.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XebVGns7" Received: by mail-pf1-f178.google.com with SMTP id d2e1a72fcca58-728f337a921so2469294b3a.3; Fri, 13 Dec 2024 15:19:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1734131945; x=1734736745; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:from:to:cc:subject :date:message-id:reply-to; bh=buSXj9Eu3v5WysNxEm8QcbC/XQhDnt9c4n4hd/cbp3o=; b=XebVGns7taFZvtyTpsmRSeXVJ9T3bkmimNyVWsnrUVvbmQhUxwiNNWVhZxRjtt4OJp 9Em2KxiLs476PKkg7Ucsd+0fxo3qDnSK1xvHMliOABoMVVZCvEP/xSLgCsLruA+olABg 5Asic4bVi3uQUoEutDHN//0ho+f6dLw1V75DXPYOdgELDpUbWyrka5uW5qtALdnokiRK WImdZ9uP4ee3w1C+MZpkpl91d4bcrqv9SMIqLikqpCBQ9GnH9g0tEmR3RYtrgqSYKnSx 2rqNmXraIdcpX0klfyy90W3fsu0/Przzp2QiUoXVGjHSvfm6LccNF2WToPRhQW3pQkzG Tfow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734131945; x=1734736745; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=buSXj9Eu3v5WysNxEm8QcbC/XQhDnt9c4n4hd/cbp3o=; b=mhz0fqxqc/m9NU/2fE09QcCwC7HdnHNPP6jywtVTe3n+qmTd54SlnvnGaV5m3hRnpr IG1Yhl2jaBpFIKXYs95GdbFBni1cEeKibY8zY8b+MuS3KlyU0aKoTiPizjVLcbPc8MKX bC8ZTKVD/Eca48WbXU67quS692B0uSKGuzza5zhuO+cINsePD0iRVggYJ1eZKDuOVw2T KD2NY3y0v9SYKDkYZeXG4bs7ILy45pbXOx9RLxNeoaB6ar3GrZrJLqgiZgr5iLSC37wR x5MAGUqt9lJwa4GAsfcV1WMMH/U+9ASsjLw7RoZ3/s+zi47p8IkABj4YEVvSJUErJA22 kRcg== X-Forwarded-Encrypted: i=1; AJvYcCUIOhsXq/Jdm7C+RrQ+YwBhPWAaAr13Utk5LmrLqfWm/ikwi2L4+DQDqt31UIRluMWwu9Ffvjr9QfkKXD3P@vger.kernel.org, AJvYcCWiG/ZavX8aHlznt0QIpSgHL2bw+B/SwRICwBvBVTUR67y20AKxNN7mzmbsw5XOMe0kU1mZ51v7O94CZ9HRscFn@vger.kernel.org, AJvYcCXW0+l46fMjoXig9lSLasTgt/RqXzhLbpi/I0cxu8w/MyUEBRPCjtoXtAP3VN4b6T49LaMMFFDP@vger.kernel.org, AJvYcCXlmmo0klgjEmDKiSstgLEtjy29u31fd24WfhFVZt5WTbZlVDB+iDW9uyxAGeZDY/E0OUc=@vger.kernel.org X-Gm-Message-State: AOJu0Yw2C9LH4J6Em4SgBiD3ckXyAv0KKg6LqXQ+1GygmUYFUybO8TeR gXy6SmVO6gEz0NG6JQzhesmjailbNdCLabIDUsonQTEy2/kdGIAt X-Gm-Gg: ASbGncu+I3e8NBpb634BfaGSor2uHaTkgg09IekdS4Oxl1cniN29uWlPyM9jLXZUVcH f5IF7QwweaYGe4l0lRKMDySSy9e2BnomsHHtrkaGtmzN3w5MK+IFYHfoXpZU06YQ1U//Lfvj4Eo a0m3bMlO6Vgdp8PEatGbVv/1zW9uQ7BBjrBka1jPdaOL4NgshbhbXMfL9U0VTlxm9/7iImG4E/P np9fZKL1mn2vYQWlKLH46ALI4ABSg2YHs20YjElaNatz323EwjtyQ== X-Google-Smtp-Source: AGHT+IFAZ3aQ/IPrf/Ya3bUc+Pvgb9Vh0D2C49sG8d1FwoFV5ZloaqsCFeu0BSkRbqo7WmToNT6ftw== X-Received: by 2002:a05:6a20:3947:b0:1e0:c8d9:3382 with SMTP id adf61e73a8af0-1e1dfe6a67bmr6134972637.45.1734131944960; Fri, 13 Dec 2024 15:19:04 -0800 (PST) Received: from [192.168.0.235] ([38.34.87.7]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72918bad9d2sm313385b3a.157.2024.12.13.15.19.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Dec 2024 15:19:04 -0800 (PST) Message-ID: <0eb169a27a61eb29f8a0c1ae44904934c9b4f14d.camel@gmail.com> Subject: Re: [PATCH bpf-next v5 4/5] bpf: verifier: Support eliding map lookup nullness From: Eduard Zingerman To: Kumar Kartikeya Dwivedi , Daniel Xu Cc: andrii@kernel.org, ast@kernel.org, shuah@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, mykolal@fb.com, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org Date: Fri, 13 Dec 2024 15:18:59 -0800 In-Reply-To: References: <92065ca054beccd6d0f35efe9715ef965e8d379f.1734045451.git.dxu@dxuuu.xyz> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.1 (3.54.1-1.fc41) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2024-12-13 at 15:14 -0800, Eduard Zingerman wrote: [...] > Great point, I'm sure this does not happen. I mean, mark_chain_precision() does not happen at the moment.