From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VRNy4aAm" Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A7E9197 for ; Tue, 21 Nov 2023 08:20:39 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id 4fb4d7f45d1cf-547e7de7b6fso10924801a12.0 for ; Tue, 21 Nov 2023 08:20:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700583637; x=1701188437; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:autocrypt :references:in-reply-to:date:cc:to:from:subject:message-id:from:to :cc:subject:date:message-id:reply-to; bh=YXZNT9Pzh70lGnDF2azKaGF07BTJT+pv8Ol+1JkbMtw=; b=VRNy4aAmBeBxXyEuKEF86/6FfKh0drw4UUutn87LJQaVHhZuRYzO7SVpVyRxR2V2tM GOZEN39QJ/1wiZRHSGPSmlceD0BpDvMDOxb3P7AzbTLSH7So2iiHcNK/WL0sLnaBi4CK uInTTIEdzMytLoMvK7QSiaI9u3cF5eCy898n5aehHwTHN83ltl3v5QmDwerOV/WBCr8v 4CUfiqfSghHzos8F8419nCjllErJChgZxFBlFH43ksuw5tJSfs0ptfYFUKRtvndvIoiT F3z6nH2gVPWNZKtCcT86/WUOy5D0QWXJXm1ySDz/cRs/u1hSr5RCj8gK56v7Gj2IObYj gTxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700583637; x=1701188437; h=mime-version:user-agent:content-transfer-encoding:autocrypt :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=YXZNT9Pzh70lGnDF2azKaGF07BTJT+pv8Ol+1JkbMtw=; b=cAc7zmZkHW6VwjAlUel06MlokkWgVipPVZGDr5EyNRXnDB0z1AjRvE2fIWi2ckc/Xj JyxXmaQqAiMYpQdZo0yLpmcHl0J8KLUKuKL8R3P6MnIq7wL8d2K6eoNn0y/oFY5VhHUQ BRRLkOT/ZCwyK6Z2G+6l10H/odC6fmgUQkzkKLKosDSbEYofb09s+wnhIMD/JWt7OX6o 6KB3cKs2paswQfnJ78zsXiwixFNhim2OU+fIYpLGcr9HOXSyrTdpogtDeMuXe/ruavzs 5WZWuZbIHnQZ+1nkRgmkx0WW2eSgEqHJKh5YfosE0vKtp9MI2KYeaUzSA6F0s0HRCqds UffA== X-Gm-Message-State: AOJu0YzBOU2/PAH6X0tKUYu0rV2Mzkn846FqgW89ZH9bT7Y19FqLWmLd Tr13sGOPtm5fngI+HMrbq+Q+DTR5Uv8= X-Google-Smtp-Source: AGHT+IGn4qr05BS+FPtME/TNn0j39m8+HPuEpl0mwybImRSlD5BR/NR7w7M7oIaJtBtWMXqNY4M2BA== X-Received: by 2002:a05:6402:2033:b0:548:786b:b46c with SMTP id ay19-20020a056402203300b00548786bb46cmr2660894edb.8.1700583637457; Tue, 21 Nov 2023 08:20:37 -0800 (PST) Received: from [192.168.1.95] (host-176-36-0-241.b024.la.net.ua. [176.36.0.241]) by smtp.gmail.com with ESMTPSA id q3-20020aa7cc03000000b0054847e78203sm4724346edt.29.2023.11.21.08.20.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Nov 2023 08:20:37 -0800 (PST) Message-ID: <1d93b6823480c86b7bd3c8959e4f2c1fed2d189b.camel@gmail.com> Subject: Re: [PATCH v2 bpf-next 09/10] selftests/bpf: validate precision logic in partial_stack_load_preserves_zeros From: Eduard Zingerman To: Andrii Nakryiko , bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, martin.lau@kernel.org Cc: kernel-team@meta.com Date: Tue, 21 Nov 2023 18:20:36 +0200 In-Reply-To: <20231121002221.3687787-10-andrii@kernel.org> References: <20231121002221.3687787-1-andrii@kernel.org> <20231121002221.3687787-10-andrii@kernel.org> Autocrypt: addr=eddyz87@gmail.com; prefer-encrypt=mutual; keydata=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 nYzhLWGcczc6J71q1Dje0l5vIPaSFOgwmWD4DA+WvuxM/shH4rtWeodbv iCTce6yYIygHgUAtJcHozAlgRrL0jz44cggBTcoeXp/atckXK546OugZPnl00J3qmm5uWAznU6T5YDv2vCvAMEbz69ib+kHtnOSBvR0Jb86UZZqSb4ATfwMOWe9htGTjKMb0QQOLK0mTcrk/TtymaG+T4Fsos0kgrxqjgfrxxEhYcVNW8v8HISmFGFbqsJmFbVtgk68BcU0wgF8oFxo7u+XYQDdKbI1uQGNBGKNNQEBDADbQIdo8L3sdSWGQtu+LnFqCZoAbYurZCmUjLV3df1b+sg+GJZvVTmMZnzDP/ADufcbjopBBjGTRAY4L76T2niu2EpjclMMM3mtrOc738Kr3+RvPjUupdkZ1ZEZaWpf4cZm+4wH5GUfyu5pmD5WXX2i1r9XaUjeVtebvbuXWmWI1ZDTfOkiz/6Z0GDSeQeEqx2PXYBcepU7S9UNWttDtiZ0+IH4DZcvyKPUcK3tOj4u8GvO3RnOrglERzNCM/WhVdG1+vgU9fXO83TB/PcfAsvxYSie7u792s/I+yA4XKKh82PSTvTzg2/4vEDGpI9yubkfXRkQN28w+HKF5qoRB8/L1ZW/brlXkNzA6SveJhCnH7aOF0Yezl6TfX27w1CW5Xmvfi7X33V/SPvo0tY1THrO1c+bOjt5F+2/K3tvejmXMS/I6URwa8n1e767y5ErFKyXAYRweE9zarEgpNZTuSIGNNAqK+SiLLXt51G7P30TVavIeB6s2lCt1QKt62ccLqUAEQEAAYkBvAQYAQoAJhYhBMfui64wKUMqp1wmBC4MZXpJYEQJBQJijTUBAhsMBQkDwmcAAAoJEC4MZXpJYEQJkRAMAKNvWVwtXm/WxWoiLnXyF2WGXKoDe5+itTLvBmKcV/b1OKZF1s90V7WfSBz712eFAynEzyeezPbwU8QBiTpZcHXwQni3IYKvsh7s t1iq+gsfnXbPz5AnS598ScZI1oP7OrPSFJkt/z4acEbOQDQs8aUqrd46PV jsdqGvKnXZxzylux29UTNby4jTlz9pNJM+wPrDRmGfchLDUmf6CffaUYCbu4FiId+9+dcTCDvxbABRy1C3OJ8QY7cxfJ+pEZW18fRJ0XCl/fiV/ecAOfB3HsqgTzAn555h0rkFgay0hAvMU/mAW/CFNSIxV397zm749ZNLA0L2dMy1AKuOqH+/B+/ImBfJMDjmdyJQ8WU/OFRuGLdqOd2oZrA1iuPIa+yUYyZkaZfz/emQwpIL1+Q4p1R/OplA4yc301AqruXXUcVDbEB+joHW3hy5FwK5t5OwTKatrSJBkydSF9zdXy98fYzGniRyRA65P0Ix/8J3BYB4edY2/w0Ip/mdYsYQljBY0A== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2023-11-20 at 16:22 -0800, Andrii Nakryiko wrote: > Enhance partial_stack_load_preserves_zeros subtest with detailed > precision propagation log checks. We know expect fp-16 to be spilled, > initially imprecise, zero const register, which is later marked as > precise even when partial stack slot load is performed, even if it's not > a register fill (!). >=20 > Signed-off-by: Andrii Nakryiko > --- Acked-by: Eduard Zingerman [...]