Commit c8f417a2 authored by Mark Rutland's avatar Mark Rutland Committed by Greg Kroah-Hartman

arm64: make sys_call_table const

commit c623b33b 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: default avatarMark Rutland <mark.rutland@arm.com>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarAmit Pundir <amit.pundir@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 55dbe8e1
......@@ -50,7 +50,7 @@ asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
* 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>
};
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