From patchwork Thu Sep 5 07:56:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philo Lu X-Patchwork-Id: 13791898 Received: from out30-131.freemail.mail.aliyun.com (out30-131.freemail.mail.aliyun.com [115.124.30.131]) (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 3A4EE19340B; Thu, 5 Sep 2024 07:56:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725522994; cv=none; b=tPk8uwroS0SEKk6cbknquvBy6s2xm+WmuRAUqOqfsYFRJXDkgjlk/Chv963EIO2cWszDt1GZXRMrLIGQbLAKo7WQ49Ww2EXXzA++7RzvA+tzzgxbTBuKEcwvH3ZcIrJBILAoP/XQ+pSJlViW4N9WuFAVhD3ZMzBsWGd7H6wxvz4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725522994; c=relaxed/simple; bh=oJ5g20RlH+r1YZadkqhgMik60Qt05kzPuIVi50Voc/c=; 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bh=JKqdxuX4Wa1ORQ7kxclAATsobclvetQtCCCwpC0uu+E=; b=InjgB6b3i6+KIKo+2wfWdXQiCn67ICIXq2MiYWR77x8ZKMKVEthyPLhtXQwMF9MNQEBg/NdzOKiII67GMLkzuRuXJDdP+obTZNtJbCl/bt15w45MrOnocCTnpIHDhwtWwNXRvYuzXOT4Q+g3U9AgDlTwBGqdCwRi0qOYi0Jqqos= Received: from localhost(mailfrom:lulie@linux.alibaba.com fp:SMTPD_---0WEKuTCT_1725522985) by smtp.aliyun-inc.com; Thu, 05 Sep 2024 15:56:26 +0800 From: Philo Lu To: bpf@vger.kernel.org Cc: edumazet@google.com, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, martin.lau@linux.dev, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, mykolal@fb.com, shuah@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, thinker.li@gmail.com, juntong.deng@outlook.com, jrife@google.com, alan.maguire@oracle.com, davemarchevsky@fb.com, dxu@dxuuu.xyz, vmalik@redhat.com, cupertino.miranda@oracle.com, mattbobrowski@google.com, xuanzhuo@linux.alibaba.com, netdev@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH bpf-next v2 2/5] selftests/bpf: Add test for __nullable suffix in tp_btf Date: Thu, 5 Sep 2024 15:56:19 +0800 Message-Id: <20240905075622.66819-3-lulie@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240905075622.66819-1-lulie@linux.alibaba.com> References: <20240905075622.66819-1-lulie@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a tracepoint with __nullable suffix in bpf_testmod, and add a failure load case: $./test_progs -t "module_attach" #173/1 module_attach/handle_tp_btf_nullable_bare:OK #173 module_attach:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Philo Lu --- .../bpf/bpf_testmod/bpf_testmod-events.h | 6 ++++++ .../selftests/bpf/bpf_testmod/bpf_testmod.c | 2 ++ .../selftests/bpf/prog_tests/module_attach.c | 14 +++++++++++++- .../bpf/progs/test_module_attach_fail.c | 16 ++++++++++++++++ 4 files changed, 37 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/progs/test_module_attach_fail.c diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h index 11ee801e75e7e..6c3b4d4f173ac 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h @@ -34,6 +34,12 @@ DECLARE_TRACE(bpf_testmod_test_write_bare, TP_ARGS(task, ctx) ); +/* Used in bpf_testmod_test_read() to test __nullable suffix */ +DECLARE_TRACE(bpf_testmod_test_nullable_bare, + TP_PROTO(struct bpf_testmod_test_read_ctx *ctx__nullable), + TP_ARGS(ctx__nullable) +); + #undef BPF_TESTMOD_DECLARE_TRACE #ifdef DECLARE_TRACE_WRITABLE #define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \ diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index c73d04bc9e9de..9649e7f09fc90 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -394,6 +394,8 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj, if (bpf_testmod_loop_test(101) > 100) trace_bpf_testmod_test_read(current, &ctx); + trace_bpf_testmod_test_nullable_bare(NULL); + /* Magic number to enable writable tp */ if (len == 64) { struct bpf_testmod_test_writable_ctx writable = { diff --git a/tools/testing/selftests/bpf/prog_tests/module_attach.c b/tools/testing/selftests/bpf/prog_tests/module_attach.c index 6d391d95f96e0..961d8577d6fab 100644 --- a/tools/testing/selftests/bpf/prog_tests/module_attach.c +++ b/tools/testing/selftests/bpf/prog_tests/module_attach.c @@ -4,6 +4,7 @@ #include #include #include "test_module_attach.skel.h" +#include "test_module_attach_fail.skel.h" #include "testing_helpers.h" static int duration; @@ -33,7 +34,7 @@ static int trigger_module_test_writable(int *val) return 0; } -void test_module_attach(void) +static void module_attach_succ(void) { const int READ_SZ = 456; const int WRITE_SZ = 457; @@ -115,3 +116,14 @@ void test_module_attach(void) cleanup: test_module_attach__destroy(skel); } + +static void module_attach_fail(void) +{ + RUN_TESTS(test_module_attach_fail); +} + +void test_module_attach(void) +{ + module_attach_succ(); + module_attach_fail(); +} diff --git a/tools/testing/selftests/bpf/progs/test_module_attach_fail.c b/tools/testing/selftests/bpf/progs/test_module_attach_fail.c new file mode 100644 index 0000000000000..0f848d8f2f5e8 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_module_attach_fail.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "vmlinux.h" +#include +#include +#include "../bpf_testmod/bpf_testmod.h" +#include "bpf_misc.h" + +SEC("tp_btf/bpf_testmod_test_nullable_bare") +__failure __msg("invalid mem access") +int BPF_PROG(handle_tp_btf_nullable_bare, struct bpf_testmod_test_read_ctx *nullable_ctx) +{ + return nullable_ctx->len; +} + +char _license[] SEC("license") = "GPL";