vhost: do not try to access device IOTLB when not initialized

[mirror_ubuntu-bionic-kernel.git] / mm / frame_vector.c

diff --git a/mm/frame_vector.c b/mm/frame_vector.c
index 297c7238f7d4094a6ac4ab0dc72e04abb870972f..c64dca6e27c28c915ad4ce662de764d6da5ef6f1 100644 (file)
--- a/mm/frame_vector.c
+++ b/mm/frame_vector.c
@@ -62,8 +62,10 @@ int get_vaddr_frames(unsigned long start, unsigned int nr_frames,
         * get_user_pages_longterm() and disallow it for filesystem-dax
         * mappings.
         */
-       if (vma_is_fsdax(vma))
-               return -EOPNOTSUPP;
+       if (vma_is_fsdax(vma)) {
+               ret = -EOPNOTSUPP;
+               goto out;
+       }
 
        if (!(vma->vm_flags & (VM_IO | VM_PFNMAP))) {
                vec->got_ref = true;