1 files changed, 3 insertions, 2 deletions

diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index f35220c72042..2184ddb9cb31 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -15,6 +15,7 @@
 #include "kern_util.h"
 #include "os.h"
 #include "um_malloc.h"
+#include "kern_constants.h"
 
 struct helper_data {
         void (*pre_exec)(void*);
@@ -69,7 +70,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
                 goto out_close;
         }
 
-        sp = stack + page_size() - sizeof(void *);
+        sp = stack + UM_KERN_PAGE_SIZE - sizeof(void *);
         data.pre_exec = pre_exec;
         data.pre_data = pre_data;
         data.argv = argv;
@@ -123,7 +124,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
         if (stack == 0)
                 return -ENOMEM;
 
-        sp = stack + (page_size() << stack_order) - sizeof(void *);
+        sp = stack + (UM_KERN_PAGE_SIZE << stack_order) - sizeof(void *);
         pid = clone(proc, (void *) sp, flags | SIGCHLD, arg);
         if (pid < 0) {
                 err = -errno;