```
commit 5ed620bf5df1b2a38af461580d5207eadf5c552e
Author: Bastien Curutchet (eBPF Foundation) <[email protected]>
selftests/bpf: test_xsk: Don't exit immediately if validate_traffic fails
This changes __testapp_validate_traffic() to return TEST_FAILURE instead
of calling exit_with_error(), and adds cleanup for sockets and umem
before returning on pthread_barrier_destroy() failure.
> diff --git a/tools/testing/selftests/bpf/test_xsk.c
> b/tools/testing/selftests/bpf/test_xsk.c
> index 2c392d5b9..18a6ce648 100644
> --- a/tools/testing/selftests/bpf/test_xsk.c
> +++ b/tools/testing/selftests/bpf/test_xsk.c
> @@ -1772,12 +1772,12 @@ static int __testapp_validate_traffic(struct
> test_spec *test, struct ifobject *i
> err = test_spec_set_mtu(test, test->mtu);
> if (err) {
> ksft_print_msg("Error, could not set mtu.\n");
> - exit_with_error(err);
> + return TEST_FAILURE;
> }
>
> if (ifobj2) {
> if (pthread_barrier_init(&barr, NULL, 2))
> - exit_with_error(errno);
> + return TEST_FAILURE;
> pkt_stream_reset(ifobj2->xsk->pkt_stream);
> }
>
[ ... ]
> @@ -1791,8 +1791,11 @@ static int __testapp_validate_traffic(struct test_spec
> *test, struct ifobject *i
>
> if (ifobj2) {
> pthread_barrier_wait(&barr);
> - if (pthread_barrier_destroy(&barr))
> - exit_with_error(errno);
> + if (pthread_barrier_destroy(&barr)) {
> + clean_sockets(test, ifobj1);
> + clean_umem(test, ifobj1, NULL);
> + return TEST_FAILURE;
> + }
>
> /*Spawn TX thread */
> pthread_create(&t1, NULL, ifobj2->func_ptr, test);
In __testapp_validate_traffic(), thread t0 is created via pthread_create()
before the barrier operations. If pthread_barrier_destroy() fails, can this
leak thread t0?
The pthread_create(&t0, ...) happens earlier in the function. The normal
execution paths handle t0 via pthread_kill() or pthread_join(), but when
pthread_barrier_destroy() fails, the new error path calls clean_sockets()
and clean_umem() but never joins or kills t0 before returning TEST_FAILURE.
The commit message says "Release the resource of the 1st thread if a
failure happens between its creation and the creation of the second
thread", but the code only releases sockets and umem.
```
---
AI reviewed your patch. Please fix the bug or email reply why it's not a bug.
See: https://github.com/kernel-patches/vmtest/blob/master/ci/claude/README.md
In-Reply-To-Subject: `selftests/bpf: test_xsk: Don't exit immediately if
validate_traffic fails`
CI run summary: https://github.com/kernel-patches/bpf/actions/runs/18910697393
