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 7C25B2C3769 for ; Wed, 25 Jun 2025 16:40:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750869631; cv=none; b=UCjQC9vqnBts3+QY2DNdugLJ8+mh/UhSu/ySFWCZzqVxFzR38VOD91gmlN3gakaigG389CWCFyrxnMnFKpVs0VOpoCowt0fIlK6pLf+C5PVcegRSrJhQGOqpqNLqqi0Zojy3s8wCGhgnKKbw+qMv1xipKW1uJh+5fUtFSN2pbYA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750869631; c=relaxed/simple; bh=FXXUFZm5Fxj8/sL44xcr/GZrLEXxjA7av4uXWdQVgnk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=nymJg8XYtbL5xN+F03XUsZpWzl+BYWlFGcVX16v+qJBX6MSvAFKiRw+xSkb535sNIJ6u+ZW607ki8PJEvIbsCvc5wRNxvKDMLu+Z5jeWL2dilT3y6UADvnuXm6Ox0nzsYPRWa55lddujJWoRSdtvl8jfI7feY7eihkbARIPRgdo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BU1XYH3F; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BU1XYH3F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C6ADC4CEEA; Wed, 25 Jun 2025 16:40:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750869631; bh=FXXUFZm5Fxj8/sL44xcr/GZrLEXxjA7av4uXWdQVgnk=; h=From:To:Cc:Subject:Date:From; b=BU1XYH3FFZuzlST1mLJsEXoH1MAijXpWnTK0r7bPMSP9Pzsf/AyXlM8YdQJ5D83NG /2jsQkFlbJ4VJxH6HjjM3cnnC8ZIcc5vD/lcVLHJo4WCts7SpmPUbSvRw7NfdLbddh tHTIyYHVzgD2EheTeNbeY2zcNL+m30yvlYWnfTkS4yeRhHuHU9VS5f0p8Gdt9PTKfj GslXjlexaiEz01a5XM6jasDGSrYl5sv5a5n1VZ5GSle9C9XGN20f3FIXCzXKRu2faV zViVJru8Vr1asOCQJXcMR6fkRy15XGAOkmgmDps2gH7WLLz/zl03K/UO3GZZczsJ8o zdUOs7Q3gOVDA== From: Song Liu To: bpf@vger.kernel.org Cc: kernel-team@meta.com, andrii@kernel.org, eddyz87@gmail.com, ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, Song Liu Subject: [PATCH v4 bpf-next 0/2] Range tracking for BPF_NEG Date: Wed, 25 Jun 2025 09:40:23 -0700 Message-ID: <20250625164025.3310203-1-song@kernel.org> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add range tracking for BPF_NEG. Please see commit log of 1/2 for more details. --- Changes v3 => v4: 1. Fix selftest verifier_value_ptr_arith.c. (Eduard) v3: https://lore.kernel.org/bpf/20250624233328.313573-1-song@kernel.org/ Changes v2 => v3: 1. Minor changes in the selftests. (Eduard) v2: https://lore.kernel.org/bpf/20250624220038.656646-1-song@kernel.org/ Changes v1 => v2: 1. Split new selftests to a separate patch. (Eduard) 2. Reset reg id on BPF_NEG. (Eduard) 3. Use env->fake_reg instead of a bpf_reg_state on the stack. (Eduard) 4. Add __msg for passing selftests. v1: https://lore.kernel.org/bpf/20250624172320.2923031-1-song@kernel.org/ Song Liu (2): bpf: Add range tracking for BPF_NEG selftests/bpf: Add tests for BPF_NEG range tracking logic include/linux/tnum.h | 2 + kernel/bpf/tnum.c | 5 ++ kernel/bpf/verifier.c | 17 ++++- .../bpf/progs/verifier_bounds_deduction.c | 11 +-- .../selftests/bpf/progs/verifier_precision.c | 70 +++++++++++++++++++ .../bpf/progs/verifier_value_ptr_arith.c | 22 ++++-- 6 files changed, 116 insertions(+), 11 deletions(-) -- 2.47.1