[PATCH] s390 signal annotations

Signed-off-by: Al Viro <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/s390/kernel/compat_signal.c

···
 			break;
 		case __SI_FAULT >> 16:
 			err |= __get_user(tmp, &from->si_addr);
-			to->si_addr = (void *)(u64) (tmp & PSW32_ADDR_INSN);
+			to->si_addr = (void __user *)(u64) (tmp & PSW32_ADDR_INSN);
 			break;
 		case __SI_POLL >> 16:
 			err |= __get_user(to->si_band, &from->si_band);
···
 		err |= __get_user(kss.ss_flags, &uss->ss_flags);
 		if (err)
 			return -EFAULT;
-		kss.ss_sp = (void *) ss_sp;
+		kss.ss_sp = (void __user *) ss_sp;
 	}
 
 	set_fs (KERNEL_DS);
···
 		goto badframe;
 
 	err = __get_user(ss_sp, &frame->uc.uc_stack.ss_sp);
-	st.ss_sp = (void *) A((unsigned long)ss_sp);
+	st.ss_sp = compat_ptr(ss_sp);
 	err |= __get_user(st.ss_size, &frame->uc.uc_stack.ss_size);
 	err |= __get_user(st.ss_flags, &frame->uc.uc_stack.ss_flags);
 	if (err)

arch/s390/kernel/signal.c

···
 
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __put_user((void *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
+	err |= __put_user(NULL, &frame->uc.uc_link);
+	err |= __put_user((void __user *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
 	err |= __put_user(sas_ss_flags(regs->gprs[15]),
 			  &frame->uc.uc_stack.ss_flags);
 	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);

include/asm-s390/sigcontext.h

···
 struct sigcontext
 {
 	unsigned long	oldmask[_SIGCONTEXT_NSIG_WORDS];
-	_sigregs        *sregs;
+	_sigregs        __user *sregs;
 };
 
 

include/asm-s390/signal.h

···
 #endif /* __KERNEL__ */
 
 typedef struct sigaltstack {
-        void *ss_sp;
+        void __user *ss_sp;
         int ss_flags;
         size_t ss_size;
 } stack_t;