3.18-stable review patch. If anyone has any objections, please let me know.
------------------ From: Mark Rutland <[email protected]> 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 <[email protected]> Acked-by: Will Deacon <[email protected]> Signed-off-by: Catalin Marinas <[email protected]> Signed-off-by: Amit Pundir <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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> };
