arch/s390/lib/test_kprobes.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <linux/kernel.h>
   4 #include <linux/kprobes.h>
   5 #include <linux/random.h>
   6 #include <kunit/test.h>
   7 #include "test_kprobes.h"
   8
   9 static struct kprobe kp;
  10
  11 static void setup_kprobe(struct kunit *test, struct kprobe *kp,
  12                          const char *symbol, int offset)
  13 {
  14         kp->offset = offset;
  15         kp->addr = NULL;
  16         kp->symbol_name = symbol;
  17 }
  18
  19 static void test_kprobe_offset(struct kunit *test, struct kprobe *kp,
  20                                const char *target, int offset)
  21 {
  22         int ret;
  23
  24         setup_kprobe(test, kp, target, 0);
  25         ret = register_kprobe(kp);
  26         if (!ret)
  27                 unregister_kprobe(kp);
  28         KUNIT_EXPECT_EQ(test, 0, ret);
  29         setup_kprobe(test, kp, target, offset);
  30         ret = register_kprobe(kp);
  31         KUNIT_EXPECT_EQ(test, -EINVAL, ret);
  32         if (!ret)
  33                 unregister_kprobe(kp);
  34 }
  35
  36 static void test_kprobe_odd(struct kunit *test)
  37 {
  38         test_kprobe_offset(test, &kp, "kprobes_target_odd",
  39                            kprobes_target_odd_offs);
  40 }
  41
  42 static void test_kprobe_in_insn4(struct kunit *test)
  43 {
  44         test_kprobe_offset(test, &kp, "kprobes_target_in_insn4",
  45                            kprobes_target_in_insn4_offs);
  46 }
  47
  48 static void test_kprobe_in_insn6_lo(struct kunit *test)
  49 {
  50         test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_lo",
  51                            kprobes_target_in_insn6_lo_offs);
  52 }
  53
  54 static void test_kprobe_in_insn6_hi(struct kunit *test)
  55 {
  56         test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_hi",
  57                            kprobes_target_in_insn6_hi_offs);
  58 }
  59
  60 static struct kunit_case kprobes_testcases[] = {
  61         KUNIT_CASE(test_kprobe_odd),
  62         KUNIT_CASE(test_kprobe_in_insn4),
  63         KUNIT_CASE(test_kprobe_in_insn6_lo),
  64         KUNIT_CASE(test_kprobe_in_insn6_hi),
  65         {}
  66 };
  67
  68 static struct kunit_suite kprobes_test_suite = {
  69         .name = "kprobes_test_s390",
  70         .test_cases = kprobes_testcases,
  71 };
  72
  73 kunit_test_suites(&kprobes_test_suite);
  74
  75 MODULE_LICENSE("GPL");