Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751539AbaLCB6d (ORCPT ); Tue, 2 Dec 2014 20:58:33 -0500 Received: from mailapp01.imgtec.com ([195.59.15.196]:22144 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751244AbaLCB63 (ORCPT ); Tue, 2 Dec 2014 20:58:29 -0500 Subject: [PATCH v3 3/3] MIPS: set stack/data protection as non-executable From: Leonid Yegoshin To: , , , , , , , , , , , , , , , , , , , , , , , , , , Date: Tue, 2 Dec 2014 17:58:24 -0800 Message-ID: <20141203015824.13886.74616.stgit@linux-yegoshin> In-Reply-To: <20141203015537.13886.50830.stgit@linux-yegoshin> References: <20141203015537.13886.50830.stgit@linux-yegoshin> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.65.146] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a last step of 3 patches which shift FPU emulation out of stack into protected area. So, it disables a default executable stack. Additionally, it sets a default data area non-executable protection. Signed-off-by: Leonid Yegoshin --- arch/mips/include/asm/page.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index 3be81803595d..d49ba81cb4ed 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -230,7 +230,7 @@ extern int __virt_addr_valid(const volatile void *kaddr); #define virt_addr_valid(kaddr) \ __virt_addr_valid((const volatile void *) (kaddr)) -#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/