On Thu, May 12, 2022 at 6:10 PM Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> From: Alexei Starovoitov <ast@xxxxxxxxxx>
>
> Check that ld_imm64 with src_reg=1 (aka BPF_PSEUDO_FUNC) works
> with jit_blinding.
>
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
> ---
Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
> tools/testing/selftests/bpf/progs/test_subprogs.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tools/testing/selftests/bpf/progs/test_subprogs.c b/tools/testing/selftests/bpf/progs/test_subprogs.c
> index b7c37ca09544..f8e9256cf18d 100644
> --- a/tools/testing/selftests/bpf/progs/test_subprogs.c
> +++ b/tools/testing/selftests/bpf/progs/test_subprogs.c
> @@ -89,6 +89,11 @@ int prog2(void *ctx)
> return 0;
> }
>
> +static int empty_callback(__u32 index, void *data)
> +{
> + return 0;
> +}
> +
> /* prog3 has the same section name as prog1 */
> SEC("raw_tp/sys_enter")
> int prog3(void *ctx)
> @@ -98,6 +103,9 @@ int prog3(void *ctx)
> if (!BPF_CORE_READ(t, pid) || !get_task_tgid((uintptr_t)t))
> return 1;
>
> + /* test that ld_imm64 with BPF_PSEUDO_FUNC doesn't get blinded */
> + bpf_loop(1, empty_callback, NULL, 0);
> +
> res3 = sub3(5) + 6; /* (5 + 3 + (4 + 1)) + 6 = 19 */
> return 0;
> }
> --
> 2.30.2
>
