diff mbox series

[bpf-next,v4,3/3] selftests/bpf: add test for legacy/perf kprobe/uprobe attach mode

Message ID 20230306064833.7932-4-imagedong@tencent.com (mailing list archive)
State Accepted
Commit c7aec81b31e43a0aa94ee55d9bb33d70b1046f76
Delegated to: BPF
Headers show
Series libbpf: allow users to set kprobe/uprobe attach mode | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 4 maintainers not CCed: shuah@kernel.org mykolal@fb.com linux-kselftest@vger.kernel.org delyank@fb.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning CHECK: Please don't use multiple blank lines WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? WARNING: line length of 83 exceeds 80 columns WARNING: line length of 86 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 2 this patch: 2
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next-VM_Test-1 success Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-5 success Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-6 success Logs for build for x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-7 success Logs for llvm-toolchain
bpf/vmtest-bpf-next-VM_Test-8 success Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-2 success Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-3 success Logs for build for aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-4 success Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-27 success Logs for test_progs_no_alu32_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-32 success Logs for test_progs_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-37 success Logs for test_verifier on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-9 success Logs for test_maps on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-10 success Logs for test_maps on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-12 success Logs for test_maps on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-13 success Logs for test_maps on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-14 success Logs for test_progs on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-15 success Logs for test_progs on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-17 success Logs for test_progs on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-18 success Logs for test_progs on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-19 success Logs for test_progs_no_alu32 on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-20 success Logs for test_progs_no_alu32 on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-22 success Logs for test_progs_no_alu32 on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-23 success Logs for test_progs_no_alu32 on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-24 success Logs for test_progs_no_alu32_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-25 success Logs for test_progs_no_alu32_parallel on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-28 success Logs for test_progs_no_alu32_parallel on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-29 success Logs for test_progs_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-30 success Logs for test_progs_parallel on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-33 success Logs for test_progs_parallel on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-34 success Logs for test_verifier on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-35 success Logs for test_verifier on aarch64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-38 success Logs for test_verifier on x86_64 with llvm-17
bpf/vmtest-bpf-next-VM_Test-21 success Logs for test_progs_no_alu32 on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-26 success Logs for test_progs_no_alu32_parallel on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-36 success Logs for test_verifier on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-16 success Logs for test_progs on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-31 success Logs for test_progs_parallel on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-11 success Logs for test_maps on s390x with gcc

Commit Message

Menglong Dong March 6, 2023, 6:48 a.m. UTC 
From: Menglong Dong <imagedong@tencent.com>

Add the testing for kprobe/uprobe attaching in default, legacy, perf and
link mode. And the testing passed:

./test_progs -t attach_probe
$5/1     attach_probe/manual-default:OK
$5/2     attach_probe/manual-legacy:OK
$5/3     attach_probe/manual-perf:OK
$5/4     attach_probe/manual-link:OK
$5/5     attach_probe/auto:OK
$5/6     attach_probe/kprobe-sleepable:OK
$5/7     attach_probe/uprobe-lib:OK
$5/8     attach_probe/uprobe-sleepable:OK
$5/9     attach_probe/uprobe-ref_ctr:OK
$5       attach_probe:OK
Summary: 1/9 PASSED, 0 SKIPPED, 0 FAILED

Reviewed-by: Biao Jiang <benbjiang@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
---
v4:
- use test_attach_probe_manual__open_and_load() directly
---
 .../selftests/bpf/prog_tests/attach_probe.c   | 37 +++++++++----
 .../selftests/bpf/progs/test_attach_probe.c   | 32 -----------
 .../bpf/progs/test_attach_probe_manual.c      | 53 +++++++++++++++++++
 3 files changed, 81 insertions(+), 41 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/test_attach_probe_manual.c
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
index c374759f39ce..7175af39134f 100644
--- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c
+++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
@@ -1,6 +1,7 @@ 
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
 #include "test_attach_kprobe_sleepable.skel.h"
+#include "test_attach_probe_manual.skel.h"
 #include "test_attach_probe.skel.h"
 
 /* this is how USDT semaphore is actually defined, except volatile modifier */
@@ -33,33 +34,43 @@  static noinline void trigger_func4(void)
 static char test_data[] = "test_data";
 
 /* manual attach kprobe/kretprobe/uprobe/uretprobe testings */
-static void test_attach_probe_manual(struct test_attach_probe *skel)
+static void test_attach_probe_manual(enum probe_attach_mode attach_mode)
 {
 	DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts);
+	DECLARE_LIBBPF_OPTS(bpf_kprobe_opts, kprobe_opts);
 	struct bpf_link *kprobe_link, *kretprobe_link;
 	struct bpf_link *uprobe_link, *uretprobe_link;
+	struct test_attach_probe_manual *skel;
 	ssize_t uprobe_offset;
 
+	skel = test_attach_probe_manual__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_kprobe_manual_open_and_load"))
+		return;
+
 	uprobe_offset = get_uprobe_offset(&trigger_func);
 	if (!ASSERT_GE(uprobe_offset, 0, "uprobe_offset"))
 		goto cleanup;
 
 	/* manual-attach kprobe/kretprobe */
-	kprobe_link = bpf_program__attach_kprobe(skel->progs.handle_kprobe,
-						 false /* retprobe */,
-						 SYS_NANOSLEEP_KPROBE_NAME);
+	kprobe_opts.attach_mode = attach_mode;
+	kprobe_opts.retprobe = false;
+	kprobe_link = bpf_program__attach_kprobe_opts(skel->progs.handle_kprobe,
+						      SYS_NANOSLEEP_KPROBE_NAME,
+						      &kprobe_opts);
 	if (!ASSERT_OK_PTR(kprobe_link, "attach_kprobe"))
 		goto cleanup;
 	skel->links.handle_kprobe = kprobe_link;
 
-	kretprobe_link = bpf_program__attach_kprobe(skel->progs.handle_kretprobe,
-						    true /* retprobe */,
-						    SYS_NANOSLEEP_KPROBE_NAME);
+	kprobe_opts.retprobe = true;
+	kretprobe_link = bpf_program__attach_kprobe_opts(skel->progs.handle_kretprobe,
+							 SYS_NANOSLEEP_KPROBE_NAME,
+							 &kprobe_opts);
 	if (!ASSERT_OK_PTR(kretprobe_link, "attach_kretprobe"))
 		goto cleanup;
 	skel->links.handle_kretprobe = kretprobe_link;
 
 	/* manual-attach uprobe/uretprobe */
+	uprobe_opts.attach_mode = attach_mode;
 	uprobe_opts.ref_ctr_offset = 0;
 	uprobe_opts.retprobe = false;
 	uprobe_link = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe,
@@ -108,6 +119,7 @@  static void test_attach_probe_manual(struct test_attach_probe *skel)
 	ASSERT_EQ(skel->bss->uprobe_byname_res, 5, "check_uprobe_byname_res");
 
 cleanup:
+	test_attach_probe_manual__destroy(skel);
 }
 
 static void test_attach_probe_auto(struct test_attach_probe *skel)
@@ -289,8 +301,15 @@  void test_attach_probe(void)
 	if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
 		goto cleanup;
 
-	if (test__start_subtest("manual"))
-		test_attach_probe_manual(skel);
+	if (test__start_subtest("manual-default"))
+		test_attach_probe_manual(PROBE_ATTACH_MODE_DEFAULT);
+	if (test__start_subtest("manual-legacy"))
+		test_attach_probe_manual(PROBE_ATTACH_MODE_LEGACY);
+	if (test__start_subtest("manual-perf"))
+		test_attach_probe_manual(PROBE_ATTACH_MODE_PERF);
+	if (test__start_subtest("manual-link"))
+		test_attach_probe_manual(PROBE_ATTACH_MODE_LINK);
+
 	if (test__start_subtest("auto"))
 		test_attach_probe_auto(skel);
 	if (test__start_subtest("kprobe-sleepable"))
diff --git a/tools/testing/selftests/bpf/progs/test_attach_probe.c b/tools/testing/selftests/bpf/progs/test_attach_probe.c
index 9e1e7163bb67..68466a6ad18c 100644
--- a/tools/testing/selftests/bpf/progs/test_attach_probe.c
+++ b/tools/testing/selftests/bpf/progs/test_attach_probe.c
@@ -7,12 +7,8 @@ 
 #include <bpf/bpf_core_read.h>
 #include "bpf_misc.h"
 
-int kprobe_res = 0;
 int kprobe2_res = 0;
-int kretprobe_res = 0;
 int kretprobe2_res = 0;
-int uprobe_res = 0;
-int uretprobe_res = 0;
 int uprobe_byname_res = 0;
 int uretprobe_byname_res = 0;
 int uprobe_byname2_res = 0;
@@ -23,13 +19,6 @@  int uretprobe_byname3_sleepable_res = 0;
 int uretprobe_byname3_res = 0;
 void *user_ptr = 0;
 
-SEC("kprobe")
-int handle_kprobe(struct pt_regs *ctx)
-{
-	kprobe_res = 1;
-	return 0;
-}
-
 SEC("ksyscall/nanosleep")
 int BPF_KSYSCALL(handle_kprobe_auto, struct __kernel_timespec *req, struct __kernel_timespec *rem)
 {
@@ -37,13 +26,6 @@  int BPF_KSYSCALL(handle_kprobe_auto, struct __kernel_timespec *req, struct __ker
 	return 0;
 }
 
-SEC("kretprobe")
-int handle_kretprobe(struct pt_regs *ctx)
-{
-	kretprobe_res = 2;
-	return 0;
-}
-
 SEC("kretsyscall/nanosleep")
 int BPF_KRETPROBE(handle_kretprobe_auto, int ret)
 {
@@ -51,20 +33,6 @@  int BPF_KRETPROBE(handle_kretprobe_auto, int ret)
 	return ret;
 }
 
-SEC("uprobe")
-int handle_uprobe(struct pt_regs *ctx)
-{
-	uprobe_res = 3;
-	return 0;
-}
-
-SEC("uretprobe")
-int handle_uretprobe(struct pt_regs *ctx)
-{
-	uretprobe_res = 4;
-	return 0;
-}
-
 SEC("uprobe")
 int handle_uprobe_ref_ctr(struct pt_regs *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/test_attach_probe_manual.c b/tools/testing/selftests/bpf/progs/test_attach_probe_manual.c
new file mode 100644
index 000000000000..7f08bce94596
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_attach_probe_manual.c
@@ -0,0 +1,53 @@ 
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2017 Facebook
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include <bpf/bpf_core_read.h>
+#include "bpf_misc.h"
+
+int kprobe_res = 0;
+int kretprobe_res = 0;
+int uprobe_res = 0;
+int uretprobe_res = 0;
+int uprobe_byname_res = 0;
+void *user_ptr = 0;
+
+SEC("kprobe")
+int handle_kprobe(struct pt_regs *ctx)
+{
+	kprobe_res = 1;
+	return 0;
+}
+
+SEC("kretprobe")
+int handle_kretprobe(struct pt_regs *ctx)
+{
+	kretprobe_res = 2;
+	return 0;
+}
+
+SEC("uprobe")
+int handle_uprobe(struct pt_regs *ctx)
+{
+	uprobe_res = 3;
+	return 0;
+}
+
+SEC("uretprobe")
+int handle_uretprobe(struct pt_regs *ctx)
+{
+	uretprobe_res = 4;
+	return 0;
+}
+
+SEC("uprobe")
+int handle_uprobe_byname(struct pt_regs *ctx)
+{
+	uprobe_byname_res = 5;
+	return 0;
+}
+
+
+char _license[] SEC("license") = "GPL";