Re: [PATCH v10 bpf-next 2/2] selftests/bpf: Add selftests for the invocation of bpf_lwt_xmit_push_encap

From: Martin KaFai Lau

Date: Wed Mar 04 2026 - 20:11:21 EST


On 3/4/26 2:33 AM, Leon Hwang wrote:
On 4/3/26 17:44, Feng Yang wrote:
From: Feng Yang <yangfeng@xxxxxxxxxx>

Calling bpf_lwt_xmit_push_encap will not cause a crash when dst is missing.

Signed-off-by: Feng Yang <yangfeng@xxxxxxxxxx>
---
.../selftests/bpf/prog_tests/lwt_misc.c | 9 ++++++++
tools/testing/selftests/bpf/progs/lwt_misc.c | 22 +++++++++++++++++++
2 files changed, 31 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/lwt_misc.c
create mode 100644 tools/testing/selftests/bpf/progs/lwt_misc.c


Unnecessary to create new files.

Move the adding test to verifier_lwt.c. prog_tests/verifier.c will run
the test.

It is actually the change from v9 to v10. I think leaving it separate is better. It is not testing the verifier, so logically it does not fit in verifier_lwt.c. It probably won't be the last fix for test_run+lwt, so separating it should be useful going forward.