Re: [PATCH bpf-next 2/4] bpf: Enable BPF_PROG_TEST_RUN for tp_btf

On Sat, Apr 26, 2025 at 9:01 AM KaFai Wan mannkafai@gmail.com wrote:

Add .test_run for tp_btf. Use the .test_run for raw_tp.

Hm... so now you'll be able to pass arbitrary values as pointers to kernel structs (e.g., arbitrary u64 as struct task_struct * pointer), not sure this is a good idea...

Signed-off-by: KaFai Wan mannkafai@gmail.com

net/bpf/test_run.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 8cb285187270..8c901ec92341 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -690,6 +690,9 @@ int bpf_prog_test_run_tracing(struct bpf_prog *prog, int b = 2, err = -EFAULT; u32 retval = 0;

•   if (prog->expected_attach_type == BPF_TRACE_RAW_TP)
  

•           return bpf_prog_test_run_raw_tp(prog, kattr, uattr);
  

•   if (kattr->test.flags || kattr->test.cpu || kattr->test.batch_size)
            return -EINVAL;
  
  

-- 2.43.0