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[2a01:cb08:8949:7e00:359a:cd79:a267:583c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d1e4d2971sm22587398f8f.22.2026.04.04.01.08.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Apr 2026 01:08:44 -0700 (PDT) Date: Sat, 4 Apr 2026 10:08:42 +0200 From: Paul Chaignon To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , Eduard Zingerman , Shung-Hsi Yu , Alexei Starovoitov Subject: [PATCH stable 6.12 0/6] bpf: Fix bounds when ranges cross sign boundary Message-ID: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline As discussed in [1], this series backports two sets of fixes for BPF, with their selftests: - 00bf8d0c6c9b ("bpf: Improve bounds when s64 crosses sign boundary") - 26e5e346a52c ("selftests/bpf: Test cross-sign 64bits range refinement") - f96841bbf4a1 ("selftests/bpf: Test invariants on JSLT crossing sign") - 5dbb19b16ac4 ("bpf: Add third round of bounds deduction") - fbc7aef517d8 ("bpf: Fix u32/s32 bounds when ranges cross min/max boundary") - f81fdfd16771 ("selftests/bpf: test refining u32/s32 bounds when ranges cross min/max boundary") Using Shung-Hsi's stable CI repo [2], I verified the BPF selftests pass with these commits applied on top of v6.12. 1: https://lore.kernel.org/stable/2026040240-friday-gurgling-7088@gregkh/ 2: https://github.com/pchaigno/stable-bpf-ci/actions/runs/23940850516/job/69826632354 Eduard Zingerman (2): bpf: Fix u32/s32 bounds when ranges cross min/max boundary selftests/bpf: test refining u32/s32 bounds when ranges cross min/max boundary Paul Chaignon (4): bpf: Improve bounds when s64 crosses sign boundary selftests/bpf: Test cross-sign 64bits range refinement selftests/bpf: Test invariants on JSLT crossing sign bpf: Add third round of bounds deduction kernel/bpf/verifier.c | 77 +++++++++ .../selftests/bpf/prog_tests/reg_bounds.c | 62 ++++++- .../selftests/bpf/progs/verifier_bounds.c | 159 +++++++++++++++++- 3 files changed, 292 insertions(+), 6 deletions(-) -- 2.43.0