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[108.214.96.168]) by smtp.gmail.com with ESMTPSA id 5614622812f47-464bb3ab494sm6867919b6e.8.2026.03.01.23.14.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Mar 2026 23:14:53 -0800 (PST) From: Sun Jian To: andrii@kernel.org, eddyz87@gmail.com Cc: ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, shuah@kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, Sun Jian Subject: [PATCH] selftests/bpf: skip verif_scale_pyperf600 on -E2BIG jump complexity limit Date: Mon, 2 Mar 2026 15:14:34 +0800 Message-ID: <20260302071434.311395-1-sun.jian.kdev@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit verif_scale_pyperf600 loads pyperf600.bpf.o, a large scale case produced by partial LLVM unrolling. On some kernel/toolchain combinations, the verifier rejects it with -E2BIG: The sequence of 8193 jumps is too complex. This hits the verifier jump sequence complexity limit (8192). Treat -E2BIG for this test as SKIP rather than FAIL. Other pyperf600 variants are unaffected. Signed-off-by: Sun Jian --- .../bpf/prog_tests/bpf_verif_scale.c | 22 ++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c index 73f669014b69..181acdddea1c 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c @@ -112,13 +112,33 @@ void test_verif_scale_pyperf180() void test_verif_scale_pyperf600() { + libbpf_print_fn_t old_print_fn = NULL; + int err; + /* partial unroll. llvm will unroll loop ~150 times. * C loop count -> 600. * Asm loop count -> 4. * 16k insns in loop body. * Total of 5 such loops. Total program size ~82k insns. */ - scale_test("pyperf600.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false); + + if (env.verifier_stats) { + test__force_log(); + old_print_fn = libbpf_set_print(libbpf_debug_print); + } + + err = check_load("pyperf600.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT); + + if (env.verifier_stats) + libbpf_set_print(old_print_fn); + + if (err == -E2BIG) { + test__skip(); + return; + } + + ASSERT_OK(err, "expect_success"); + } void test_verif_scale_pyperf600_bpf_loop(void) base-commit: 11439c4635edd669ae435eec308f4ab8a0804808 -- 2.43.0