--- On Ubuntu and probably other distros, ptrace permissions are tightend a bit by default; i.e., /proc/sys/kernel/yama/ptrace_score is set to 1. This cases memfd_secret's ptrace attach test fails with a permission error. Set it to 0 piror to running the program.

Signed-off-by: Itaru Kitayama itaru.kitayama@linux.dev --- tools/testing/selftests/mm/run_vmtests.sh | 1 + 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 3e2bc818d566..7d31718ce834 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -303,6 +303,7 @@ CATEGORY="hmm" run_test bash ./test_hmm.sh smoke # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate

+echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope CATEGORY="memfd_secret" run_test ./memfd_secret

# KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100

--- base-commit: ffc253263a1375a65fa6c9f62a893e9767fbebfa change-id: 20231030-selftest-c75b1b460817

Best regards,