The patch titled Subject: selftests: memfd_secret: don't build memfd_secret test on unsupported arches has been added to the -mm mm-hotfixes-unstable branch. Its filename is selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: Muhammad Usama Anjum usama.anjum@collabora.com Subject: selftests: memfd_secret: don't build memfd_secret test on unsupported arches Date: Fri, 9 Aug 2024 12:56:42 +0500

[1] mentions that memfd_secret is only supported on arm64, riscv, x86 and x86_64 for now. It doesn't support other architectures. I found the build error on arm and decided to send the fix as it was creating noise on KernelCI. Hence I'm adding condition that memfd_secret should only be compiled on supported architectures.

Also check in run_vmtests script if memfd_secret binary is present before executing it.

Link: https://lore.kernel.org/all/20210518072034.31572-7-rppt@kernel.org/ [1] Link: https://lkml.kernel.org/r/20240809075642.403247-1-usama.anjum@collabora.com Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)") Signed-off-by: Muhammad Usama Anjum usama.anjum@collabora.com Cc: Albert Ou aou@eecs.berkeley.edu Cc: James Bottomley James.Bottomley@HansenPartnership.com Cc: Mike Rapoport (Microsoft) rppt@kernel.org Cc: Palmer Dabbelt palmer@dabbelt.com Cc: Paul Walmsley paul.walmsley@sifive.com Cc: Shuah Khan shuah@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

tools/testing/selftests/mm/Makefile | 2 ++ tools/testing/selftests/mm/run_vmtests.sh | 3 +++ 2 files changed, 5 insertions(+)

--- a/tools/testing/selftests/mm/Makefile~selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches +++ a/tools/testing/selftests/mm/Makefile @@ -53,7 +53,9 @@ TEST_GEN_FILES += madv_populate TEST_GEN_FILES += map_fixed_noreplace TEST_GEN_FILES += map_hugetlb TEST_GEN_FILES += map_populate +ifneq (,$(filter $(ARCH),arm64 riscv riscv64 x86 x86_64)) TEST_GEN_FILES += memfd_secret +endif TEST_GEN_FILES += migration TEST_GEN_FILES += mkdirty TEST_GEN_FILES += mlock-random-test --- a/tools/testing/selftests/mm/run_vmtests.sh~selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches +++ a/tools/testing/selftests/mm/run_vmtests.sh @@ -374,8 +374,11 @@ CATEGORY="hmm" run_test bash ./test_hmm. # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate

+if [ -x ./memfd_secret ] +then (echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix CATEGORY="memfd_secret" run_test ./memfd_secret +fi

# KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 CATEGORY="ksm" run_test ./ksm_tests -H -s 100 _

Patches currently in -mm which might be from usama.anjum@collabora.com are

selftests-mm-fix-build-errors-on-armhf.patch selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch