The patch titled
Subject: kselftest: vm: check errnos in mdwe_test
has been added to the -mm mm-unstable branch. Its filename is
kselftest-vm-check-errnos-in-mdwe_test.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kselftest-vm-check-errnos-in-mdwe_test.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: Florent Revest <revest@xxxxxxxxxxxx>
Subject: kselftest: vm: check errnos in mdwe_test
Date: Mon, 28 Aug 2023 17:08:55 +0200
Invalid prctls return a negative code and set errno. It's good practice
to check that errno is set as expected.
Link: https://lkml.kernel.org/r/20230828150858.393570-4-revest@xxxxxxxxxxxx
Signed-off-by: Florent Revest <revest@xxxxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Alexey Izbyshev <izbyshev@xxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Ayush Jain <ayush.jain3@xxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Greg Thelen <gthelen@xxxxxxxxxx>
Cc: Joey Gouly <joey.gouly@xxxxxxx>
Cc: KP Singh <kpsingh@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Szabolcs Nagy <Szabolcs.Nagy@xxxxxxx>
Cc: Topi Miettinen <toiwoton@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/mdwe_test.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/tools/testing/selftests/mm/mdwe_test.c~kselftest-vm-check-errnos-in-mdwe_test
+++ a/tools/testing/selftests/mm/mdwe_test.c
@@ -23,14 +23,22 @@
TEST(prctl_flags)
{
EXPECT_LT(prctl(PR_SET_MDWE, 7L, 0L, 0L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_SET_MDWE, 0L, 7L, 0L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_SET_MDWE, 0L, 0L, 7L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_SET_MDWE, 0L, 0L, 0L, 7L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_GET_MDWE, 7L, 0L, 0L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_GET_MDWE, 0L, 7L, 0L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_GET_MDWE, 0L, 0L, 7L, 0L), 0);
+ EXPECT_EQ(errno, EINVAL);
EXPECT_LT(prctl(PR_GET_MDWE, 0L, 0L, 0L, 7L), 0);
+ EXPECT_EQ(errno, EINVAL);
}
FIXTURE(mdwe)
_
Patches currently in -mm which might be from revest@xxxxxxxxxxxx are
kselftest-vm-fix-tabs-spaces-inconsistency-in-the-mdwe-test.patch
kselftest-vm-fix-mdwes-mmap_fixed-test-case.patch
kselftest-vm-check-errnos-in-mdwe_test.patch
mm-make-pr_mdwe_refuse_exec_gain-an-unsigned-long.patch
mm-add-a-no_inherit-flag-to-the-pr_set_mdwe-prctl.patch
kselftest-vm-add-tests-for-no-inherit-memory-deny-write-execute.patch
