disable brk system call

Author: thestinger

arch/arm64/include/asm/unistd32.h

@@ -112,7 +112,7 @@ __SYSCALL(__NR_times, compat_sys_times)
 			/* 44 was sys_prof */
 __SYSCALL(44, sys_ni_syscall)
 #define __NR_brk 45
-__SYSCALL(__NR_brk, sys_brk)
+__SYSCALL(__NR_brk, sys_ni_syscall)
 #define __NR_setgid 46
 __SYSCALL(__NR_setgid, sys_setgid16)
 #define __NR_getgid 47

include/uapi/asm-generic/unistd.h

@@ -584,7 +584,7 @@ __SC_COMP(__NR_readahead, sys_readahead, compat_sys_readahead)
 
 /* mm/nommu.c, also with MMU */
 #define __NR_brk 214
-__SYSCALL(__NR_brk, sys_brk)
+__SYSCALL(__NR_brk, sys_ni_syscall)
 #define __NR_munmap 215
 __SYSCALL(__NR_munmap, sys_munmap)
 #define __NR_mremap 216