Patch "arm64: make sys_call_table const" has been added to the 3.18-stable tree

Patch "arm64: make sys_call_table const" has been added to the 3.18-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    arm64: make sys_call_table const

to the 3.18-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-make-sys_call_table-const.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From c623b33b4e9599c6ac5076f7db7369eb9869aa04 Mon Sep 17 00:00:00 2001
From: Mark Rutland <mark.rutland@arm.com>
Date: Thu, 8 Jan 2015 11:42:59 +0000
Subject: arm64: make sys_call_table const

From: Mark Rutland <mark.rutland@arm.com>

commit c623b33b4e9599c6ac5076f7db7369eb9869aa04 upstream.

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 <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arm64/kernel/sys.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/kernel/sys.c
+++ b/arch/arm64/kernel/sys.c
@@ -50,7 +50,7 @@ asmlinkage long sys_mmap(unsigned long a
  * 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 <asm/unistd.h>
 };


Patches currently in stable-queue which might be from mark.rutland@arm.com are

queue-3.18/arm64-make-sys_call_table-const.patch