remap_file_pages: correctly handle the case of a NULL vm_ops pointer

[karo-tx-linux.git] / mm / fremap.c

diff --git a/mm/fremap.c b/mm/fremap.c
index 3899a86851ceb6bf021e51c014fef16e0893a7f0..a0aaf0e56800394be8b9ae0d0da47712b6e0bb53 100644 (file)
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -169,7 +169,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
        if (vma->vm_private_data && !(vma->vm_flags & VM_NONLINEAR))
                goto out;
 
-       if (!vma->vm_ops->remap_pages)
+       if (!vma->vm_ops || !vma->vm_ops->remap_pages)
                goto out;
 
        if (start < vma->vm_start || start + size > vma->vm_end)