diff options
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index fd28c1157bd3..3687a40b61c6 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -1024,6 +1024,11 @@ static void bpf_testmod_test_2(int a, int b) { } +static int bpf_testmod_tramp(int value) +{ + return 0; +} + static int bpf_testmod_ops__test_maybe_null(int dummy, struct task_struct *task__nullable) { @@ -1080,6 +1085,7 @@ static int bpf_testmod_init(void) .kfunc_btf_id = bpf_testmod_dtor_ids[1] }, }; + void **tramp; int ret; ret = register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC, &bpf_testmod_common_kfunc_set); @@ -1103,6 +1109,14 @@ static int bpf_testmod_init(void) ret = register_bpf_testmod_uprobe(); if (ret < 0) return ret; + + /* Ensure nothing is between tramp_1..tramp_40 */ + BUILD_BUG_ON(offsetof(struct bpf_testmod_ops, tramp_1) + 40 * sizeof(long) != + offsetofend(struct bpf_testmod_ops, tramp_40)); + tramp = (void **)&__bpf_testmod_ops.tramp_1; + while (tramp <= (void **)&__bpf_testmod_ops.tramp_40) + *tramp++ = bpf_testmod_tramp; + return 0; } |