On 3/11/22 1:10 PM, Alan Maguire wrote:
tests that verify auto-attach works for function entry/return for
local functions in program, library functions in program and library
functions in library.
Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
---
.../selftests/bpf/prog_tests/uprobe_autoattach.c | 48 +++++++++++++++
.../selftests/bpf/progs/test_uprobe_autoattach.c | 69 ++++++++++++++++++++++
2 files changed, 117 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
create mode 100644 tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c b/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
new file mode 100644
index 0000000..57ed636
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022, Oracle and/or its affiliates. */
+
+#include <test_progs.h>
+#include "test_uprobe_autoattach.skel.h"
+
+/* uprobe attach point */
+static void autoattach_trigger_func(void)
+{
+ asm volatile ("");
+}
+
+void test_uprobe_autoattach(void)
+{
+ struct test_uprobe_autoattach *skel;
+ char *mem;
+
+ skel = test_uprobe_autoattach__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "skel_open"))
+ return;
+ if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
+ goto cleanup;
+
+ if (!ASSERT_OK(test_uprobe_autoattach__attach(skel), "skel_attach"))
+ goto cleanup;
+
+ /* trigger & validate uprobe & uretprobe */
+ autoattach_trigger_func();
+
+ /* trigger & validate shared library u[ret]probes attached by name */
+ mem = malloc(1);
+ free(mem);
+
+ if (!ASSERT_EQ(skel->bss->uprobe_byname_res, 1, "check_uprobe_byname_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname_res, 2, "check_uretprobe_byname_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uprobe_byname2_res, 3, "check_uprobe_byname2_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname2_res, 4, "check_uretprobe_byname2_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uprobe_byname3_res, 5, "check_uprobe_byname3_res"))
+ goto cleanup;
+ if (!ASSERT_EQ(skel->bss->uretprobe_byname3_res, 6, "check_uretprobe_byname3_res"))
+ goto cleanup;
+cleanup:
+ test_uprobe_autoattach__destroy(skel);
+}
Hmm, looks like this fails CI, ptal:
https://github.com/kernel-patches/bpf/runs/5517172330?check_suite_focus=true
[...]
test_attach_probe:PASS:uprobe_offset 0 nsec
test_attach_probe:PASS:ref_ctr_offset 0 nsec
test_attach_probe:PASS:skel_open 0 nsec
test_attach_probe:PASS:check_bss 0 nsec
test_attach_probe:PASS:attach_kprobe 0 nsec
test_attach_probe:PASS:attach_kretprobe 0 nsec
test_attach_probe:PASS:uprobe_ref_ctr_before 0 nsec
test_attach_probe:PASS:attach_uprobe 0 nsec
test_attach_probe:PASS:uprobe_ref_ctr_after 0 nsec
test_attach_probe:PASS:attach_uretprobe 0 nsec
test_attach_probe:PASS:auto-attach should fail for old-style name 0 nsec
test_attach_probe:PASS:attach_uprobe_byname 0 nsec
test_attach_probe:PASS:attach_uretprobe_byname 0 nsec
test_attach_probe:PASS:attach_uprobe_byname2 0 nsec
test_attach_probe:PASS:attach_uretprobe_byname2 0 nsec
test_attach_probe:PASS:check_kprobe_res 0 nsec
test_attach_probe:PASS:check_kretprobe_res 0 nsec
test_attach_probe:PASS:check_uprobe_res 0 nsec
test_attach_probe:PASS:check_uretprobe_res 0 nsec
test_attach_probe:PASS:check_uprobe_byname_res 0 nsec
test_attach_probe:PASS:check_uretprobe_byname_res 0 nsec
test_attach_probe:PASS:check_uprobe_byname2_res 0 nsec
test_attach_probe:FAIL:check_uretprobe_byname2_res unexpected check_uretprobe_byname2_res: actual 0 != expected 8
test_attach_probe:PASS:uprobe_ref_ctr_cleanup 0 nsec
#4 attach_probe:FAIL
[...]
