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[5.95.187.49]) by smtp.gmail.com with ESMTPSA id r123sm5074455wme.7.2019.07.11.02.31.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Jul 2019 02:31:54 -0700 (PDT) From: Paolo Pisati To: --in-reply-to= <20190710231439.GD32439@tassilo.jf.intel.com>, Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , "David S . Miller" , Shuah Khan , Jakub Kicinski , Jiong Wang Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] Fold checksum at the end of bpf_csum_diff and fix Date: Thu, 11 Jul 2019 11:31:51 +0200 Message-Id: <1562837513-745-1-git-send-email-p.pisati@gmail.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Paolo Pisati After applying patch 0001, all checksum implementations i could test (x86-64, arm64 and arm), now agree on the return value. Patch 0002 fix the expected return value for test #13: i did the calculation manually, and it correspond. Unfortunately, after applying patch 0001, other test cases now fail in test_verifier: $ sudo ./tools/testing/selftests/bpf/test_verifier ... #417/p helper access to variable memory: size = 0 allowed on NULL (ARG_PTR_TO_MEM_OR_NULL) FAIL retval 65535 != 0 #419/p helper access to variable memory: size = 0 allowed on != NULL stack pointer (ARG_PTR_TO_MEM_OR_NULL) FAIL retval 65535 != 0 #423/p helper access to variable memory: size possible = 0 allowed on != NULL packet pointer (ARG_PTR_TO_MEM_OR_NULL) FAIL retval 65535 != 0 ... Summary: 1500 PASSED, 0 SKIPPED, 3 FAILED And there are probably other fallouts in other selftests - someone familiar should take a look before applying these patches. Paolo Pisati (2): bpf: bpf_csum_diff: fold the checksum before returning the value bpf, selftest: fix checksum value for test #13 net/core/filter.c | 2 +- tools/testing/selftests/bpf/verifier/array_access.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)