The patch titled
Subject: selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem.patch
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: Edward Liaw <edliaw@xxxxxxxxxx>
Subject: selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM
Date: Thu, 21 Mar 2024 23:20:21 +0000
The sigbus-wp test requires the UFFD_FEATURE_WP_HUGETLBFS_SHMEM flag for
shmem and hugetlb targets. Otherwise it is not backwards compatible with
kernels <5.19 and fails with EINVAL.
Link: https://lkml.kernel.org/r/20240321232023.2064975-1-edliaw@xxxxxxxxxx
Fixes: 73c1ea939b65 ("selftests/mm: move uffd sig/events tests into uffd unit tests")
Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-unit-tests.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/uffd-unit-tests.c~selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem
+++ a/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -1427,7 +1427,8 @@ uffd_test_case_t uffd_tests[] = {
.uffd_fn = uffd_sigbus_wp_test,
.mem_targets = MEM_ALL,
.uffd_feature_required = UFFD_FEATURE_SIGBUS |
- UFFD_FEATURE_EVENT_FORK | UFFD_FEATURE_PAGEFAULT_FLAG_WP,
+ UFFD_FEATURE_EVENT_FORK | UFFD_FEATURE_PAGEFAULT_FLAG_WP |
+ UFFD_FEATURE_WP_HUGETLBFS_SHMEM,
},
{
.name = "events",
_
Patches currently in -mm which might be from edliaw@xxxxxxxxxx are
selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem.patch
