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Thu, 10 Sep 2026 05:57:02 -0700 (PDT) From: Tianyi Chen To: Andrew Morton , David Hildenbrand Cc: Shuah Khan , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Joel Savitz Subject: [PATCH v3 RESEND 2/2] selftests/mm: Only prepare ptrace_scope when memfd_secret is selected Date: Thu, 10 Sep 2026 20:56:45 +0800 Message-ID: <20260910125645.285866-3-diannaaav@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260910125645.285866-1-diannaaav@gmail.com> References: <20260910125645.285866-1-diannaaav@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Tianyi Chen The memfd_secret setup clears ptrace_scope whenever its test binary is executable, even when a different category was selected. run_test() filters the test invocation, but it does not protect the preceding setup. Check the category selection before entering the memfd_secret block so running unrelated categories does not change ptrace_scope. Keep the existing executable check and the behavior when memfd_secret is selected. Acked-by: David Hildenbrand (Arm) Assisted-by: LLM Signed-off-by: Tianyi Chen --- tools/testing/selftests/mm/run_vmtests.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 9e62ab4c6775..9bbef9410ccc 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -370,7 +370,7 @@ CATEGORY="process_madv" run_test ./process_madv CATEGORY="vma_merge" run_test ./merge -if [ -x ./memfd_secret ] +if test_selected "memfd_secret" && [ -x ./memfd_secret ] then if [ -f /proc/sys/kernel/yama/ptrace_scope ]; then (echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix -- 2.55.0