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From: Florent Revest <revest@chromium.org>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, catalin.marinas@arm.com,
	anshuman.khandual@arm.com, joey.gouly@arm.com, mhocko@suse.com,
	keescook@chromium.org, david@redhat.com, peterx@redhat.com,
	izbyshev@ispras.ru, broonie@kernel.org, szabolcs.nagy@arm.com,
	kpsingh@kernel.org, gthelen@google.com, toiwoton@gmail.com,
	ayush.jain3@amd.com, Florent Revest <revest@chromium.org>
Subject: [PATCH v4 3/6] kselftest: vm: Check errnos in mdwe_test
Date: Mon, 28 Aug 2023 17:08:55 +0200	[thread overview]
Message-ID: <20230828150858.393570-4-revest@chromium.org> (raw)
In-Reply-To: <20230828150858.393570-1-revest@chromium.org>

Invalid prctls return a negative code and set errno. It's good practice
to check that errno is set as expected.

Signed-off-by: Florent Revest <revest@chromium.org>
---
 tools/testing/selftests/mm/mdwe_test.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/mm/mdwe_test.c b/tools/testing/selftests/mm/mdwe_test.c
index 91aa9c3099e7..1b84cf8e1bbe 100644
--- a/tools/testing/selftests/mm/mdwe_test.c
+++ b/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)
-- 
2.42.0.rc2.253.gd59a3bf2b4-goog


  parent reply	other threads:[~2023-08-28 15:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-28 15:08 [PATCH v4 0/6] MDWE without inheritance Florent Revest
2023-08-28 15:08 ` [PATCH v4 1/6] kselftest: vm: Fix tabs/spaces inconsistency in the mdwe test Florent Revest
2023-08-28 15:08 ` [PATCH v4 2/6] kselftest: vm: Fix mdwe's mmap_FIXED test case Florent Revest
2023-08-28 15:08 ` Florent Revest [this message]
2023-08-28 18:45   ` [PATCH v4 3/6] kselftest: vm: Check errnos in mdwe_test Kees Cook
2023-09-21  9:51   ` Catalin Marinas
2023-08-28 15:08 ` [PATCH v4 4/6] mm: Make PR_MDWE_REFUSE_EXEC_GAIN an unsigned long Florent Revest
2023-09-22  1:29   ` Andrew Morton
2023-09-22 13:10     ` Florent Revest
2023-08-28 15:08 ` [PATCH v4 5/6] mm: Add a NO_INHERIT flag to the PR_SET_MDWE prctl Florent Revest
2023-09-22  1:33   ` Andrew Morton
2023-10-03 15:52     ` Florent Revest
2023-08-28 15:08 ` [PATCH v4 6/6] kselftest: vm: Add tests for no-inherit memory-deny-write-execute Florent Revest
2023-08-28 18:45   ` Kees Cook
2023-09-20 19:56 ` [PATCH v4 0/6] MDWE without inheritance Florent Revest
2023-09-21  9:52   ` Catalin Marinas
2023-09-21  9:57     ` Florent Revest

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