1 // SPDX-License-Identifier: GPL-2.0
3 #include <bpf/bpf_helpers.h>
4 #include <bpf/bpf_tracing.h>
7 char _license[] SEC("license") = "GPL";
9 extern const void bpf_fentry_test1 __ksym;
10 extern const void bpf_fentry_test2 __ksym;
11 extern const void bpf_fentry_test3 __ksym;
12 extern const void bpf_fentry_test4 __ksym;
13 extern const void bpf_fentry_test5 __ksym;
14 extern const void bpf_fentry_test6 __ksym;
15 extern const void bpf_fentry_test7 __ksym;
16 extern const void bpf_fentry_test8 __ksym;
19 bool test_cookie = false;
21 __u64 kprobe_test1_result = 0;
22 __u64 kprobe_test2_result = 0;
23 __u64 kprobe_test3_result = 0;
24 __u64 kprobe_test4_result = 0;
25 __u64 kprobe_test5_result = 0;
26 __u64 kprobe_test6_result = 0;
27 __u64 kprobe_test7_result = 0;
28 __u64 kprobe_test8_result = 0;
30 __u64 kretprobe_test1_result = 0;
31 __u64 kretprobe_test2_result = 0;
32 __u64 kretprobe_test3_result = 0;
33 __u64 kretprobe_test4_result = 0;
34 __u64 kretprobe_test5_result = 0;
35 __u64 kretprobe_test6_result = 0;
36 __u64 kretprobe_test7_result = 0;
37 __u64 kretprobe_test8_result = 0;
39 extern bool CONFIG_X86_KERNEL_IBT __kconfig __weak;
41 static void kprobe_multi_check(void *ctx, bool is_return)
43 if (bpf_get_current_pid_tgid() >> 32 != pid)
46 __u64 cookie = test_cookie ? bpf_get_attach_cookie(ctx) : 0;
47 __u64 addr = bpf_get_func_ip(ctx) - (CONFIG_X86_KERNEL_IBT ? 4 : 0);
49 #define SET(__var, __addr, __cookie) ({ \
50 if (((const void *) addr == __addr) && \
51 (!test_cookie || (cookie == __cookie))) \
56 SET(kretprobe_test1_result, &bpf_fentry_test1, 8);
57 SET(kretprobe_test2_result, &bpf_fentry_test2, 7);
58 SET(kretprobe_test3_result, &bpf_fentry_test3, 6);
59 SET(kretprobe_test4_result, &bpf_fentry_test4, 5);
60 SET(kretprobe_test5_result, &bpf_fentry_test5, 4);
61 SET(kretprobe_test6_result, &bpf_fentry_test6, 3);
62 SET(kretprobe_test7_result, &bpf_fentry_test7, 2);
63 SET(kretprobe_test8_result, &bpf_fentry_test8, 1);
65 SET(kprobe_test1_result, &bpf_fentry_test1, 1);
66 SET(kprobe_test2_result, &bpf_fentry_test2, 2);
67 SET(kprobe_test3_result, &bpf_fentry_test3, 3);
68 SET(kprobe_test4_result, &bpf_fentry_test4, 4);
69 SET(kprobe_test5_result, &bpf_fentry_test5, 5);
70 SET(kprobe_test6_result, &bpf_fentry_test6, 6);
71 SET(kprobe_test7_result, &bpf_fentry_test7, 7);
72 SET(kprobe_test8_result, &bpf_fentry_test8, 8);
79 * No tests in here, just to trigger 'bpf_fentry_test*'
80 * through tracing test_run
82 SEC("fentry/bpf_modify_return_test")
88 SEC("kprobe.multi/bpf_fentry_tes??")
89 int test_kprobe(struct pt_regs *ctx)
91 kprobe_multi_check(ctx, false);
95 SEC("kretprobe.multi/bpf_fentry_test*")
96 int test_kretprobe(struct pt_regs *ctx)
98 kprobe_multi_check(ctx, true);
103 int test_kprobe_manual(struct pt_regs *ctx)
105 kprobe_multi_check(ctx, false);
109 SEC("kretprobe.multi")
110 int test_kretprobe_manual(struct pt_regs *ctx)
112 kprobe_multi_check(ctx, true);