--- kernel/sys.c~unmodified	2003-03-30 21:51:07.000000000 +0200
+++ kernel/sys.c	2003-03-30 21:53:01.000000000 +0200
@@ -1026,6 +1026,7 @@
 asmlinkage long sys_sethostname(char *name, int len)
 {
 	int errno;
+	char tmp[__NEW_UTS_LEN];
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
@@ -1033,7 +1034,8 @@
 		return -EINVAL;
 	down_write(&uts_sem);
 	errno = -EFAULT;
-	if (!copy_from_user(system_utsname.nodename, name, len)) {
+	if (!copy_from_user(tmp, name, len)) {
+		memcpy(system_utsname.nodename, tmp, len);
 		system_utsname.nodename[len] = 0;
 		errno = 0;
 	}
@@ -1065,6 +1067,7 @@
 asmlinkage long sys_setdomainname(char *name, int len)
 {
 	int errno;
+	char tmp[__NEW_UTS_LEN];
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
@@ -1073,9 +1076,10 @@
 
 	down_write(&uts_sem);
 	errno = -EFAULT;
-	if (!copy_from_user(system_utsname.domainname, name, len)) {
-		errno = 0;
+	if (!copy_from_user(tmp, name, len)) {
+		memcpy(system_utsname.domainname, tmp, len);
 		system_utsname.domainname[len] = 0;
+		errno = 0;
 	}
 	up_write(&uts_sem);
 	return errno;