The patch titled
Subject: selftests/mm: skip uffd-stress if userfaultfd not available
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-skip-uffd-stress-if-userfaultfd-not-available.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-skip-uffd-stress-if-userfaultfd-not-available.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Brendan Jackman <jackmanb@xxxxxxxxxx>
Subject: selftests/mm: skip uffd-stress if userfaultfd not available
Date: Fri, 21 Feb 2025 18:25:42 +0000
It's pretty obvious that the test wouldn't work if you don't have the
feature enabled. But, it's still useful to SKIP instead of failing so the
reader can immediately tell that this is the reason why.
Link: https://lkml.kernel.org/r/20250221-mm-selftests-v2-3-28c4d66383c5@xxxxxxxxxx
Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx>
Cc: Dev Jain <dev.jain@xxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Mateusz Guzik <mjguzik@xxxxxxxxx>
Cc: Shuah Khan (Samsung OSG) <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-stress.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/mm/uffd-stress.c~selftests-mm-skip-uffd-stress-if-userfaultfd-not-available
+++ a/tools/testing/selftests/mm/uffd-stress.c
@@ -412,8 +412,8 @@ static void parse_test_type_arg(const ch
* feature.
*/
- if (uffd_get_features(&features))
- err("failed to get available features");
+ if (uffd_get_features(&features) && errno == ENOENT)
+ ksft_exit_skip("failed to get available features (%d)\n", errno);
test_uffdio_wp = test_uffdio_wp &&
(features & UFFD_FEATURE_PAGEFAULT_FLAG_WP);
_
Patches currently in -mm which might be from jackmanb@xxxxxxxxxx are
mm-mmu_gather-update-comment-on-rcu-freeing.patch
selftests-mm-report-errno-when-things-fail-in-gup_longterm.patch
selftests-mm-fix-assumption-that-sudo-is-present.patch
selftests-mm-skip-uffd-stress-if-userfaultfd-not-available.patch
selftests-mm-skip-uffd-wp-mremap-if-userfaultfd-not-available.patch
selftests-mm-uffd-rename-nr_cpus-nr_threads.patch
selftests-mm-print-some-details-when-uffd-stress-gets-bad-params.patch
selftests-mm-dont-fail-uffd-stress-if-too-many-cpus.patch
selftests-mm-skip-map_populate-on-weird-filesystems.patch
selftests-mm-skip-gup_longerm-tests-on-weird-filesystems.patch
