3138 do_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, unsigned long sp)  in do_sigaltstack()  argument
3190 	if (uoss) {  in do_sigaltstack()
3192 		if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))  in do_sigaltstack()
3194 		error = __put_user(oss.ss_sp, &uoss->ss_sp) |  in do_sigaltstack()
3195 			__put_user(oss.ss_size, &uoss->ss_size) |  in do_sigaltstack()
3196 			__put_user(oss.ss_flags, &uoss->ss_flags);  in do_sigaltstack()
3202 SYSCALL_DEFINE2(sigaltstack,const stack_t __user *,uss, stack_t __user *,uoss)  in SYSCALL_DEFINE2()  argument
3204 	return do_sigaltstack(uss, uoss, current_user_stack_pointer());  in SYSCALL_DEFINE2()
3227 	stack_t uss, uoss;  in COMPAT_SYSCALL_DEFINE2()  local
3244 			     (stack_t __force __user *) &uoss,  in COMPAT_SYSCALL_DEFINE2()
3249 		    __put_user(ptr_to_compat(uoss.ss_sp), &uoss_ptr->ss_sp) ||  in COMPAT_SYSCALL_DEFINE2()
3250 		    __put_user(uoss.ss_flags, &uoss_ptr->ss_flags) ||  in COMPAT_SYSCALL_DEFINE2()
3251 		    __put_user(uoss.ss_size, &uoss_ptr->ss_size))  in COMPAT_SYSCALL_DEFINE2()