This series addresses three reliability problems in the namespaces selftest suite that cause tests to hang or report incorrect results.
The first patch fixes a hang in nsid_test where the grandchild process is not reaped during fixture teardown, leaving it alive and holding the TAP pipe write-end open so the test runner blocks indefinitely waiting for EOF. The second and third patches fix two problems in listns_efault_test: a waitpid(-1) race that can cause the iterator child to be consumed during namespace cleanup (leading to an indefinite block on the subsequent targeted waitpid), and a false FAIL verdict on kernels that do not implement listns() (the EFAULT tests should SKIP in that case, consistent with every other listns test that already handles ENOSYS correctly). Assisted-by: Claude Sonnet 4.6 Signed-off-by: Ricardo B. Marliere <[email protected]> --- Ricardo B. Marlière (3): selftests/namespaces: Kill grandchild in nsid fixture teardown selftests/namespaces: Fix waitpid race in listns_efault_test cleanup selftests/namespaces: Skip efault tests when listns() is not available .../selftests/namespaces/listns_efault_test.c | 33 ++++++++++++++++++---- tools/testing/selftests/namespaces/nsid_test.c | 14 ++++++++- 2 files changed, 40 insertions(+), 7 deletions(-) --- base-commit: bfe62a454542cfad3379f6ef5680b125f41e20f4 change-id: 20260407-selftests-namespaces_fixes-43ff47179e5c Best regards, -- Ricardo B. Marlière <[email protected]>
