1 files changed, 6 insertions, 2 deletions

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 6c501c4d996d..8eaa1ba793fc 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -289,9 +289,13 @@ static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long
 {
         struct proc_dir_entry *pde = PDE(file_inode(file));
         unsigned long rv = -EIO;
-        unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+        unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long) = NULL;
         if (use_pde(pde)) {
-                get_unmapped_area = pde->proc_fops->get_unmapped_area;
+#ifdef CONFIG_MMU
+                get_unmapped_area = current->mm->get_unmapped_area;
+#endif
+                if (pde->proc_fops->get_unmapped_area)
+                        get_unmapped_area = pde->proc_fops->get_unmapped_area;
                 if (get_unmapped_area)
                         rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
                 unuse_pde(pde);