From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 092E3C3A59D for ; Tue, 20 Aug 2019 21:49:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3C202339D for ; Tue, 20 Aug 2019 21:49:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=dxuuu.xyz header.i=@dxuuu.xyz header.b="sJJ+Nd9K"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="KvnfySik" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730895AbfHTVtI (ORCPT ); Tue, 20 Aug 2019 17:49:08 -0400 Received: from new4-smtp.messagingengine.com ([66.111.4.230]:44007 "EHLO new4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730959AbfHTVtI (ORCPT ); Tue, 20 Aug 2019 17:49:08 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.nyi.internal (Postfix) with ESMTP id E6B212D8D; Tue, 20 Aug 2019 17:49:06 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Tue, 20 Aug 2019 17:49:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dxuuu.xyz; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm1; bh=wwzGUs2eyk7oG KkxpIpcL+YllWVCcAIC2rCVN5UFoSE=; b=sJJ+Nd9KAIanYgid7Uunyl0bcNSWD 79wzJl5yG56rIJhAeUwgetaTfwIhf3d9uUSWgFtoT+LhJOuAfyyqmc0z31QmeZRT qKMeJ724G3fiq4dE5Q/kfq3eDeC+ml2KhblOsJJ5jGvqNQC0dY9UCliRWPsw48+B qZ2BEyLWr1dM8srMsUt2lRioKlLsbCkXFCyYDnQ7tagHaxZ/IBRGrpYffJf+MMWb p6Y4nnmXxaw4rp4K8Y8yXHawf+qVfN5kFWWnTx/z5euRqlon/2oR9kBAvI1E/EFb fK37xLWJCQYTtqPNuYHManTi7XOGxPXJwI14Y5/MyFZhH3G4kF3kxrt1Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=wwzGUs2eyk7oGKkxpIpcL+YllWVCcAIC2rCVN5UFoSE=; b=KvnfySik zzfcW6uLPaAku9Ew9As/y9bTbTLJIYn4ROZsdIQtX8kTfpItLKlr8d4RMmj3K4EN UGvCRkv8qM18oy5XYtXOgnHol61u10ysbqArNBim/BfmrlZycdj/S6K7i0ttJGoM qhx+EK8orMk0KiTUNLKbbAlYttXIb6TSO1VCE1O3bsAArAf02e12QOzF0Uj2UR14 wxQBbC/cfiRi6HgfIrGDAI1hyRzjm9iXVgt0AyS7G0+7O+oFA7c/mwqQmfPXk5Am Vnx6/BG4n92DGrsqOFjpOfoadIqR5/HqnH83TL3jNbyPCX76kU+liZNtogA3E1/1 H4BCqMzSbTiLVA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduvddrudegvddgtdegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucgfrhhlucfvnfffucdlfeehmdenucfjughrpefhvf fufffkofgjfhgggfestdekredtredttdenucfhrhhomhepffgrnhhivghlucgiuhcuoegu gihusegugihuuhhurdighiiiqeenucfkphepudelledrvddtuddrieegrddvnecurfgrrh grmhepmhgrihhlfhhrohhmpegugihusegugihuuhhurdighiiinecuvehluhhsthgvrhfu ihiivgepud X-ME-Proxy: Received: from dlxu-fedora-R90QNFJV.thefacebook.com (unknown [199.201.64.2]) by mail.messagingengine.com (Postfix) with ESMTPA id D1F7280060; Tue, 20 Aug 2019 17:49:04 -0400 (EDT) From: Daniel Xu To: bpf@vger.kernel.org, songliubraving@fb.com, yhs@fb.com, andriin@fb.com, peterz@infradead.org, mingo@redhat.com, acme@kernel.org Cc: Daniel Xu , ast@fb.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: [PATCH v4 bpf-next 4/4] tracing/probe: Add self test for PERF_EVENT_IOC_QUERY_PROBE Date: Tue, 20 Aug 2019 14:48:19 -0700 Message-Id: <20190820214819.16154-5-dxu@dxuuu.xyz> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190820214819.16154-1-dxu@dxuuu.xyz> References: <20190820214819.16154-1-dxu@dxuuu.xyz> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Acked-by: Andrii Nakryiko Signed-off-by: Daniel Xu --- .../selftests/bpf/prog_tests/attach_probe.c | 115 ++++++++++++++++++ 1 file changed, 115 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c index 5ecc267d98b0..414d5f4f7ccd 100644 --- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c +++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c @@ -27,17 +27,27 @@ void test_attach_probe(void) const char *kretprobe_name = "kretprobe/sys_nanosleep"; const char *uprobe_name = "uprobe/trigger_func"; const char *uretprobe_name = "uretprobe/trigger_func"; + struct perf_event_query_probe kprobe_query = {}; + struct perf_event_query_probe kretprobe_query = {}; + struct perf_event_query_probe uprobe_query = {}; + struct perf_event_query_probe uretprobe_query = {}; const int kprobe_idx = 0, kretprobe_idx = 1; const int uprobe_idx = 2, uretprobe_idx = 3; const char *file = "./test_attach_probe.o"; struct bpf_program *kprobe_prog, *kretprobe_prog; struct bpf_program *uprobe_prog, *uretprobe_prog; struct bpf_object *obj; + const struct bpf_link_fd *kprobe_fd_link; + const struct bpf_link_fd *kretprobe_fd_link; + const struct bpf_link_fd *uprobe_fd_link; + const struct bpf_link_fd *uretprobe_fd_link; int err, prog_fd, duration = 0, res; struct bpf_link *kprobe_link = NULL; struct bpf_link *kretprobe_link = NULL; struct bpf_link *uprobe_link = NULL; struct bpf_link *uretprobe_link = NULL; + int kprobe_fd, kretprobe_fd; + int uprobe_fd, uretprobe_fd; int results_map_fd; size_t uprobe_offset; ssize_t base_addr; @@ -116,6 +126,63 @@ void test_attach_probe(void) /* trigger & validate kprobe && kretprobe */ usleep(1); + kprobe_fd_link = bpf_link__as_fd(kprobe_link); + if (CHECK(!kprobe_fd_link, "kprobe_link_as_fd", + "failed to cast link to fd link\n")) + goto cleanup; + + kprobe_fd = bpf_link_fd__fd(kprobe_fd_link); + if (CHECK(kprobe_fd < 0, "kprobe_get_perf_fd", + "failed to get perf fd from kprobe link\n")) + goto cleanup; + + kretprobe_fd_link = bpf_link__as_fd(kretprobe_link); + if (CHECK(!kretprobe_fd_link, "kretprobe_link_as_fd", + "failed to cast link to fd link\n")) + goto cleanup; + + kretprobe_fd = bpf_link_fd__fd(kretprobe_fd_link); + if (CHECK(kretprobe_fd < 0, "kretprobe_get_perf_fd", + "failed to get perf fd from kretprobe link\n")) + goto cleanup; + + kprobe_query.size = sizeof(kprobe_query); + err = ioctl(kprobe_fd, PERF_EVENT_IOC_QUERY_PROBE, &kprobe_query); + if (CHECK(err, "get_kprobe_ioctl", + "failed to issue kprobe query ioctl\n")) + goto cleanup; + if (CHECK(kprobe_query.size != sizeof(kprobe_query), "get_kprobe_ioctl", + "read incorrect size from kprobe_ioctl: %llu\n", + kprobe_query.size)) + goto cleanup; + if (CHECK(kprobe_query.nmissed > 0, "get_kprobe_ioctl", + "read incorrect nmissed from kprobe_ioctl: %llu\n", + kprobe_query.nmissed)) + goto cleanup; + if (CHECK(kprobe_query.nhit == 0, "get_kprobe_ioctl", + "read incorrect nhit from kprobe_ioctl: %llu\n", + kprobe_query.nhit)) + goto cleanup; + + kretprobe_query.size = sizeof(kretprobe_query); + err = ioctl(kretprobe_fd, PERF_EVENT_IOC_QUERY_PROBE, &kretprobe_query); + if (CHECK(err, "get_kretprobe_ioctl", + "failed to issue kretprobe query ioctl\n")) + goto cleanup; + if (CHECK(kretprobe_query.size != sizeof(kretprobe_query), + "get_kretprobe_ioctl", + "read incorrect size from kretprobe_ioctl: %llu\n", + kretprobe_query.size)) + goto cleanup; + if (CHECK(kretprobe_query.nmissed > 0, "get_kretprobe_ioctl", + "read incorrect nmissed from kretprobe_ioctl: %llu\n", + kretprobe_query.nmissed)) + goto cleanup; + if (CHECK(kretprobe_query.nhit <= 0, "get_kretprobe_ioctl", + "read incorrect nhit from kretprobe_ioctl: %llu\n", + kretprobe_query.nhit)) + goto cleanup; + err = bpf_map_lookup_elem(results_map_fd, &kprobe_idx, &res); if (CHECK(err, "get_kprobe_res", "failed to get kprobe res: %d\n", err)) @@ -135,6 +202,54 @@ void test_attach_probe(void) /* trigger & validate uprobe & uretprobe */ get_base_addr(); + uprobe_fd_link = bpf_link__as_fd(uprobe_link); + if (CHECK(!uprobe_fd_link, "uprobe_link_as_fd", + "failed to cast link to fd link\n")) + goto cleanup; + + uprobe_fd = bpf_link_fd__fd(uprobe_fd_link); + if (CHECK(uprobe_fd < 0, "uprobe_get_perf_fd", + "failed to get perf fd from uprobe link\n")) + goto cleanup; + + uretprobe_fd_link = bpf_link__as_fd(uretprobe_link); + if (CHECK(!uretprobe_fd_link, "uretprobe_link_as_fd", + "failed to cast link to fd link\n")) + goto cleanup; + + uretprobe_fd = bpf_link_fd__fd(uretprobe_fd_link); + if (CHECK(uretprobe_fd < 0, "uretprobe_get_perf_fd", + "failed to get perf fd from uretprobe link\n")) + goto cleanup; + + uprobe_query.size = sizeof(uprobe_query); + err = ioctl(uprobe_fd, PERF_EVENT_IOC_QUERY_PROBE, &uprobe_query); + if (CHECK(err, "get_uprobe_ioctl", + "failed to issue uprobe query ioctl\n")) + goto cleanup; + if (CHECK(uprobe_query.nmissed > 0, "get_uprobe_ioctl", + "read incorrect nmissed from uprobe_ioctl: %llu\n", + uprobe_query.nmissed)) + goto cleanup; + if (CHECK(uprobe_query.nhit == 0, "get_uprobe_ioctl", + "read incorrect nhit from uprobe_ioctl: %llu\n", + uprobe_query.nhit)) + goto cleanup; + + uretprobe_query.size = sizeof(uretprobe_query); + err = ioctl(uretprobe_fd, PERF_EVENT_IOC_QUERY_PROBE, &uretprobe_query); + if (CHECK(err, "get_uretprobe_ioctl", + "failed to issue uretprobe query ioctl\n")) + goto cleanup; + if (CHECK(uretprobe_query.nmissed > 0, "get_uretprobe_ioctl", + "read incorrect nmissed from uretprobe_ioctl: %llu\n", + uretprobe_query.nmissed)) + goto cleanup; + if (CHECK(uretprobe_query.nhit <= 0, "get_uretprobe_ioctl", + "read incorrect nhit from uretprobe_ioctl: %llu\n", + uretprobe_query.nhit)) + goto cleanup; + err = bpf_map_lookup_elem(results_map_fd, &uprobe_idx, &res); if (CHECK(err, "get_uprobe_res", "failed to get uprobe res: %d\n", err)) -- 2.21.0