From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-180.mta1.migadu.com (out-180.mta1.migadu.com [95.215.58.180]) (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 5F72026CE39 for ; Mon, 28 Jul 2025 14:24:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753712693; cv=none; b=fS5SIFM9SHTXjjK5qMGiA6Ofx1gSU1xAeYxA8qAjKXRUZBFXqDXCQ7YMaJPKf/yOe6OlgnSyVCbaXOkisjOvoX9kGREX6IPu9pLz6eHdbBTKNxQgYUDsHISR/ifO7zHrumwB/rpUhZXEZvT2oyP1jCOZVSv2ZsKVVGBjvaJkekE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753712693; c=relaxed/simple; bh=RwsvN7h+MwIAp1Q3rRY5hTjTjLcDI1591n8pAm4pp5M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ne791sTjnTLIRgo/6F9sIowj67s6XWYVZdA+c7jMCwRqJ1iYbXh4fGzn0+iH/iLGGXDEeRW4I9vyFYddaSkoBXn3p72Q7sQbfWhVxX+vbVyI1PzoHu00V58CJerLsTikRdIFLOnawepSCLujLsG/55YC4pCPWx3oN5W11TyREV8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=qD+CJrJa; arc=none smtp.client-ip=95.215.58.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="qD+CJrJa" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1753712689; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Q2UtlBjYCHd4WXPHz2y7B6ReYPn5VzXGTSRNx+oZieM=; b=qD+CJrJapOE3LYAKFbckTc9BiX3PWEMD92mdjVnI0Ruhp0wDo9zG1WYRVcUxsrNxqJqE00 qug4Ol4SuV5ld/K3/Xz/Lhf0c88XlWMmp+iHFmhAx3FPE7XCscn7Jl/lUholEwG6r2sNHU SpB7cKzOIcdrDdEJ7RhyIR+EOzbZNUM= From: Leon Hwang To: bpf@vger.kernel.org Cc: ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, menglong8.dong@gmail.com, Leon Hwang Subject: [RFC PATCH bpf-next 5/5] selftests/bpf: Add case to test freplace attach failure log Date: Mon, 28 Jul 2025 22:23:46 +0800 Message-ID: <20250728142346.95681-6-leon.hwang@linux.dev> In-Reply-To: <20250728142346.95681-1-leon.hwang@linux.dev> References: <20250728142346.95681-1-leon.hwang@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Test the new libbpf API 'bpf_program__attach_freplace_log()': cd tools/testing/selftests/bpf/ ./test_progs -t tracing_failure/freplace_attach_log #468/3 tracing_failure/freplace_attach_log:OK #468 tracing_failure:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Leon Hwang --- .../bpf/prog_tests/tracing_failure.c | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_failure.c b/tools/testing/selftests/bpf/prog_tests/tracing_failure.c index a222df765bc3..05c3a5a9db2a 100644 --- a/tools/testing/selftests/bpf/prog_tests/tracing_failure.c +++ b/tools/testing/selftests/bpf/prog_tests/tracing_failure.c @@ -2,6 +2,8 @@ /* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ #include #include "tracing_failure.skel.h" +#include "tailcall_bpf2bpf1.skel.h" +#include "freplace_global_func.skel.h" static void test_bpf_spin_lock(bool is_spin_lock) { @@ -28,10 +30,51 @@ static void test_bpf_spin_lock(bool is_spin_lock) tracing_failure__destroy(skel); } +static void test_freplace_attach_log(void) +{ + struct freplace_global_func *freplace_skel = NULL; + struct tailcall_bpf2bpf1 *tailcall_skel = NULL; + struct bpf_link *freplace_link = NULL; + struct bpf_program *prog; + char log_buf[64]; + int err, prog_fd; + + tailcall_skel = tailcall_bpf2bpf1__open_and_load(); + if (!ASSERT_OK_PTR(tailcall_skel, "tailcall_bpf2bpf1__open_and_load")) + return; + + freplace_skel = freplace_global_func__open(); + if (!ASSERT_OK_PTR(freplace_skel, "freplace_global_func__open")) + goto out; + + prog = freplace_skel->progs.new_test_pkt_access; + prog_fd = bpf_program__fd(tailcall_skel->progs.entry); + err = bpf_program__set_attach_target(prog, prog_fd, "entry"); + if (!ASSERT_OK(err, "bpf_program__set_attach_target")) + goto out; + + err = freplace_global_func__load(freplace_skel); + if (!ASSERT_OK(err, "freplace_global_func__load")) + goto out; + + log_buf[0] = '\0'; + freplace_link = bpf_program__attach_freplace_log(prog, prog_fd, "subprog_tail", log_buf, + sizeof(log_buf)); + ASSERT_ERR_PTR(freplace_link, "bpf_program__attach_freplace_log"); + ASSERT_STREQ(log_buf, "subprog_tail() is not a global function\n", "log_buf"); + +out: + bpf_link__destroy(freplace_link); + freplace_global_func__destroy(freplace_skel); + tailcall_bpf2bpf1__destroy(tailcall_skel); +} + void test_tracing_failure(void) { if (test__start_subtest("bpf_spin_lock")) test_bpf_spin_lock(true); if (test__start_subtest("bpf_spin_unlock")) test_bpf_spin_lock(false); + if (test__start_subtest("freplace_attach_log")) + test_freplace_attach_log(); } -- 2.50.1