From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758132AbbAIP5s (ORCPT ); Fri, 9 Jan 2015 10:57:48 -0500 Received: from foss-mx-na.foss.arm.com ([217.140.108.86]:58954 "EHLO foss-mx-na.foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755069AbbAIP5q (ORCPT ); Fri, 9 Jan 2015 10:57:46 -0500 From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Arnd Bergmann , Andrew Morton , Mark Rutland Subject: [PATCH 5/5] arm64: make sys_call_table const Date: Fri, 9 Jan 2015 15:57:28 +0000 Message-Id: <1420819048-3515-6-git-send-email-catalin.marinas@arm.com> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1420819048-3515-1-git-send-email-catalin.marinas@arm.com> References: <1420819048-3515-1-git-send-email-catalin.marinas@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Rutland As with x86, mark the sys_call_table const such that it will be placed in the .rodata section. This will cause attempts to modify the table (accidental or deliberate) to fail when strict page permissions are in place. In the absence of strict page permissions, there should be no functional change. Signed-off-by: Mark Rutland Acked-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/kernel/sys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index dec351a9f3d6..75151aaf1a52 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -49,7 +49,7 @@ asmlinkage long sys_rt_sigreturn_wrapper(void); * The sys_call_table array must be 4K aligned to be accessible from * kernel/entry.S. */ -void *sys_call_table[__NR_syscalls] __aligned(4096) = { +void * const sys_call_table[__NR_syscalls] __aligned(4096) = { [0 ... __NR_syscalls - 1] = sys_ni_syscall, #include };