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[35.204.162.40]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5e5c7669fd0sm8846503a12.51.2025.03.11.17.21.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Mar 2025 17:21:23 -0700 (PDT) From: jeffxu@chromium.org To: akpm@linux-foundation.org, vbabka@suse.cz, lorenzo.stoakes@oracle.com, Liam.Howlett@Oracle.com, broonie@kernel.org, skhan@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, jorgelo@chromium.org, keescook@chromium.org, pedro.falcato@gmail.com, rdunlap@infradead.org, jannh@google.com, Jeff Xu Subject: [RFC PATCH v1 1/2] selftests/mm: mseal_test: avoid using no-op mprotect Date: Wed, 12 Mar 2025 00:21:16 +0000 Message-ID: <20250312002117.2556240-2-jeffxu@google.com> X-Mailer: git-send-email 2.49.0.rc0.332.g42c0ae87b1-goog In-Reply-To: <20250312002117.2556240-1-jeffxu@google.com> References: <20250312002117.2556240-1-jeffxu@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jeff Xu Modify mseal_tests to avoid using no-op mprotect. The no-op mprotect shall be allowed. Signed-off-by: Jeff Xu Fixes: 4a2dd02b0916 ("mm/mprotect: replace can_modify_mm with can_modify_vma") --- tools/testing/selftests/mm/mseal_test.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c index ad17005521a8..0d4e5d8aeefb 100644 --- a/tools/testing/selftests/mm/mseal_test.c +++ b/tools/testing/selftests/mm/mseal_test.c @@ -677,7 +677,7 @@ static void test_seal_mprotect_two_vma(bool seal) FAIL_TEST_IF_FALSE(!ret); } - ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); + ret = sys_mprotect(ptr, page_size * 2, PROT_READ); if (seal) FAIL_TEST_IF_FALSE(ret < 0); else @@ -718,7 +718,7 @@ static void test_seal_mprotect_two_vma_with_split(bool seal) FAIL_TEST_IF_FALSE(!ret); /* the second page is sealed. */ - ret = sys_mprotect(ptr + page_size, page_size, PROT_READ | PROT_WRITE); + ret = sys_mprotect(ptr + page_size, page_size, PROT_READ); if (seal) FAIL_TEST_IF_FALSE(ret < 0); else @@ -873,7 +873,7 @@ static void test_seal_mprotect_split(bool seal) FAIL_TEST_IF_FALSE(!ret); - ret = sys_mprotect(ptr + 2 * page_size, 2 * page_size, PROT_READ); + ret = sys_mprotect(ptr + 2 * page_size, 2 * page_size, PROT_WRITE); if (seal) FAIL_TEST_IF_FALSE(ret < 0); else -- 2.49.0.rc0.332.g42c0ae87b1-goog