Patch "selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM" has been added to the 6.8-stable tree

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This is a note to let you know that I've just added the patch titled

    selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 105840ebd76d8dbc1a7d734748ae320076f3201e Mon Sep 17 00:00:00 2001
From: Edward Liaw <edliaw@xxxxxxxxxx>
Date: Thu, 21 Mar 2024 23:20:21 +0000
Subject: selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM

From: Edward Liaw <edliaw@xxxxxxxxxx>

commit 105840ebd76d8dbc1a7d734748ae320076f3201e upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 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
+++ b/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 stable-queue which might be from edliaw@xxxxxxxxxx are

queue-6.8/selftests-mm-fix-arm-related-issue-with-fork-after-pthread_create.patch
queue-6.8/selftests-mm-sigbus-wp-test-requires-uffd_feature_wp_hugetlbfs_shmem.patch




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