From patchwork Wed Aug 9 08:34:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13347616 X-Patchwork-Delegate: bpf@iogearbox.net Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7D5066AAB for ; Wed, 9 Aug 2023 08:39:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02D0DC433C7; Wed, 9 Aug 2023 08:39:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691570350; bh=UVSEgNTzIVPEsp/ldi2kMTzfANM9le6efNH62rxLv0s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GPjuKHCPlwIKhDM4m2c2D4Rh5ICqgk/Izm4vIblRC0YDxbGyvuees5cDBV7NQx0/r 6ti8FoXrQyYME4izy5QlYiaBU0DKiY6PM8J3pVvj2loF1F/K80eYeNKCl0JeeIyoGb Q8kI0bXqRsOuLR/epDkJqJe48mpwlpDPn25Vu+/5YZFwExn5BVnhk4hmPJG7Mt+epd bqEIUL3pPIt8BVLW/YU51ObZNiWRAH6R0RgmTK1Qb/Zu8PFW5PZENkg/CVPYNOSvfP sUCe1JORXgk2LzKDQooQZFf7WTZvP3HA142QiwsoO2C9yZhiz8NRKKx54UAQyfPnu6 W4IzxZaaMEqcQ== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Yafang Shao Subject: [PATCHv7 bpf-next 26/28] selftests/bpf: Add uprobe_multi cookie test Date: Wed, 9 Aug 2023 10:34:38 +0200 Message-ID: <20230809083440.3209381-27-jolsa@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809083440.3209381-1-jolsa@kernel.org> References: <20230809083440.3209381-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net Adding test for cookies setup/retrieval in uprobe_link uprobes and making sure bpf_get_attach_cookie works properly. Signed-off-by: Jiri Olsa --- .../selftests/bpf/prog_tests/bpf_cookie.c | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c index 26b2d1bffdfd..1454cebc262b 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c @@ -11,6 +11,7 @@ #include #include "test_bpf_cookie.skel.h" #include "kprobe_multi.skel.h" +#include "uprobe_multi.skel.h" /* uprobe attach point */ static noinline void trigger_func(void) @@ -239,6 +240,81 @@ static void kprobe_multi_attach_api_subtest(void) bpf_link__destroy(link1); kprobe_multi__destroy(skel); } + +/* defined in prog_tests/uprobe_multi_test.c */ +void uprobe_multi_func_1(void); +void uprobe_multi_func_2(void); +void uprobe_multi_func_3(void); + +static void uprobe_multi_test_run(struct uprobe_multi *skel) +{ + skel->bss->uprobe_multi_func_1_addr = (__u64) uprobe_multi_func_1; + skel->bss->uprobe_multi_func_2_addr = (__u64) uprobe_multi_func_2; + skel->bss->uprobe_multi_func_3_addr = (__u64) uprobe_multi_func_3; + + skel->bss->pid = getpid(); + skel->bss->test_cookie = true; + + uprobe_multi_func_1(); + uprobe_multi_func_2(); + uprobe_multi_func_3(); + + ASSERT_EQ(skel->bss->uprobe_multi_func_1_result, 1, "uprobe_multi_func_1_result"); + ASSERT_EQ(skel->bss->uprobe_multi_func_2_result, 1, "uprobe_multi_func_2_result"); + ASSERT_EQ(skel->bss->uprobe_multi_func_3_result, 1, "uprobe_multi_func_3_result"); + + ASSERT_EQ(skel->bss->uretprobe_multi_func_1_result, 1, "uretprobe_multi_func_1_result"); + ASSERT_EQ(skel->bss->uretprobe_multi_func_2_result, 1, "uretprobe_multi_func_2_result"); + ASSERT_EQ(skel->bss->uretprobe_multi_func_3_result, 1, "uretprobe_multi_func_3_result"); +} + +static void uprobe_multi_attach_api_subtest(void) +{ + struct bpf_link *link1 = NULL, *link2 = NULL; + struct uprobe_multi *skel = NULL; + LIBBPF_OPTS(bpf_uprobe_multi_opts, opts); + const char *syms[3] = { + "uprobe_multi_func_1", + "uprobe_multi_func_2", + "uprobe_multi_func_3", + }; + __u64 cookies[3]; + + cookies[0] = 3; /* uprobe_multi_func_1 */ + cookies[1] = 1; /* uprobe_multi_func_2 */ + cookies[2] = 2; /* uprobe_multi_func_3 */ + + opts.syms = syms; + opts.cnt = ARRAY_SIZE(syms); + opts.cookies = &cookies[0]; + + skel = uprobe_multi__open_and_load(); + if (!ASSERT_OK_PTR(skel, "uprobe_multi")) + goto cleanup; + + link1 = bpf_program__attach_uprobe_multi(skel->progs.uprobe, -1, + "/proc/self/exe", NULL, &opts); + if (!ASSERT_OK_PTR(link1, "bpf_program__attach_uprobe_multi")) + goto cleanup; + + cookies[0] = 2; /* uprobe_multi_func_1 */ + cookies[1] = 3; /* uprobe_multi_func_2 */ + cookies[2] = 1; /* uprobe_multi_func_3 */ + + opts.retprobe = true; + link2 = bpf_program__attach_uprobe_multi(skel->progs.uretprobe, -1, + "/proc/self/exe", NULL, &opts); + if (!ASSERT_OK_PTR(link2, "bpf_program__attach_uprobe_multi_retprobe")) + goto cleanup; + + uprobe_multi_test_run(skel); + +cleanup: + bpf_link__destroy(link2); + bpf_link__destroy(link1); + uprobe_multi__destroy(skel); +} + static void uprobe_subtest(struct test_bpf_cookie *skel) { DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, opts); @@ -515,6 +591,8 @@ void test_bpf_cookie(void) kprobe_multi_attach_api_subtest(); if (test__start_subtest("uprobe")) uprobe_subtest(skel); + if (test__start_subtest("multi_uprobe_attach_api")) + uprobe_multi_attach_api_subtest(); if (test__start_subtest("tracepoint")) tp_subtest(skel); if (test__start_subtest("perf_event"))