The patch titled
Subject: selftests/mm: print some details when uffd-stress gets bad params
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-print-some-details-when-uffd-stress-gets-bad-params.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-print-some-details-when-uffd-stress-gets-bad-params.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: print some details when uffd-stress gets bad params
Date: Fri, 21 Feb 2025 18:25:45 +0000
So this can be debugged more easily.
Link: https://lkml.kernel.org/r/20250221-mm-selftests-v2-6-28c4d66383c5@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 | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/uffd-stress.c~selftests-mm-print-some-details-when-uffd-stress-gets-bad-params
+++ a/tools/testing/selftests/mm/uffd-stress.c
@@ -457,7 +457,8 @@ int main(int argc, char **argv)
nr_pages_per_cpu = bytes / page_size / nr_threads;
if (!nr_pages_per_cpu) {
- _err("invalid MiB");
+ _err("pages_per_cpu = 0, cannot test (%lu / %lu / %lu)",
+ nr_pages_per_cpu, bytes, page_size, nr_threads);
usage();
}
_
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
