From patchwork Mon Dec 9 09:50:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Brodsky X-Patchwork-Id: 848540 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C926E219E91; Mon, 9 Dec 2024 09:51:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733737873; cv=none; b=AqQzFk9E0MM/8hToJJJRy63HBhOhfH3EPCF5a8m6D9F4y12Kag48yAnJK91+Xl8M+wwljqEMC+0uH7oUbAqJTp8TxzX9g1MC9TKhg31OZoqojEZrpE26c8OKzcfb/9JsHnTVWNq+ycFNizAI81RLCCEMu0uzmzr921/fJ3oIj04= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733737873; c=relaxed/simple; bh=MvhezTTxFbJK29hWXRfef53TZk3il/zUElkvvYWqRvw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cEej7R51U5pUt5pS2FmCVKcE87PklrgOAOf/IledOm4aq8lC0z3n8rBy2u43hubD1A7AADJD4VT2L3bSslJ/n9vUymislTOy0xPcjIvLzfh3oW2ENXmjA8Wz7ZTdbHSeXMVYLSnzUu/QNKMUlEpno2s8oxqr79rFJSSrQMGi1os= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 84549113E; Mon, 9 Dec 2024 01:51:39 -0800 (PST) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7ADDE3F720; Mon, 9 Dec 2024 01:51:09 -0800 (PST) From: Kevin Brodsky To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , akpm@linux-foundation.org, aruna.ramakrishna@oracle.com, catalin.marinas@arm.com, dave.hansen@linux.intel.com, joey.gouly@arm.com, keith.lucas@oracle.com, ryan.roberts@arm.com, shuah@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, x86@kernel.org Subject: [PATCH 14/14] selftests/mm: Remove X permission from sigaltstack mapping Date: Mon, 9 Dec 2024 09:50:19 +0000 Message-ID: <20241209095019.1732120-15-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241209095019.1732120-1-kevin.brodsky@arm.com> References: <20241209095019.1732120-1-kevin.brodsky@arm.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There is no reason why the alternate signal stack should be mapped as RWX. Map it as RW instead. Signed-off-by: Kevin Brodsky --- tools/testing/selftests/mm/pkey_sighandler_tests.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/mm/pkey_sighandler_tests.c b/tools/testing/selftests/mm/pkey_sighandler_tests.c index 449ec5acec75..17bbfcd552c6 100644 --- a/tools/testing/selftests/mm/pkey_sighandler_tests.c +++ b/tools/testing/selftests/mm/pkey_sighandler_tests.c @@ -315,7 +315,7 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void) sys_mprotect_pkey(stack, STACK_SIZE, PROT_READ | PROT_WRITE, pkey); /* Set up alternate signal stack that will use the default MPK */ - sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, + sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); sigstack.ss_flags = 0; sigstack.ss_size = STACK_SIZE; @@ -488,7 +488,7 @@ static void test_pkru_sigreturn(void) sys_mprotect_pkey(stack, STACK_SIZE, PROT_READ | PROT_WRITE, pkey); /* Set up alternate signal stack that will use the default MPK */ - sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, + sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); sigstack.ss_flags = 0; sigstack.ss_size = STACK_SIZE;