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[108.50.252.180]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6fb5db9f173sm12992576d6.14.2025.06.17.16.18.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Jun 2025 16:18:37 -0700 (PDT) From: Harishankar Vishwanathan To: ast@kernel.org Cc: m.shachnai@rutgers.edu, srinivas.narayana@rutgers.edu, santosh.nagarakatte@rutgers.edu, Harishankar Vishwanathan , Daniel Borkmann , John Fastabend , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] bpf, verifier: Improve precision of BPF_ADD and BPF_SUB Date: Tue, 17 Jun 2025 19:17:30 -0400 Message-ID: <20250617231733.181797-1-harishankar.vishwanathan@gmail.com> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patchset improves the precision of BPF_ADD and BPF_SUB range tracking, and also adds selftests that exercise the precision improvement. Changelog: v2: * Add clearer example of precision improvement in the commit message for verifier.c changes. * Add selftests that exercise the precision improvement to verifier_bounds.c (suggested by Eduard Zingerman). v1: https://lore.kernel.org/bpf/20250610221356.2663491-1-harishankar.vishwanathan@gmail.com/ Harishankar Vishwanathan (2): bpf, verifier: Improve precision for BPF_ADD and BPF_SUB selftests/bpf: Add testcases for BPF_ADD and BPF_SUB kernel/bpf/verifier.c | 76 ++++++++++++----- .../selftests/bpf/progs/verifier_bounds.c | 85 +++++++++++++++++++ 2 files changed, 141 insertions(+), 20 deletions(-) -- 2.45.2