Drivers using vm_insert_page() will set VM_MIXEDMAP, but their .fault
handler are likely not prepared to handle expansion.
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
---
mm/mremap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/mremap.c b/mm/mremap.c
index 17fa018..3b886dc 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -354,7 +354,7 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
if (new_len > old_len) {
unsigned long pgoff;
- if (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP))
+ if (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP))
goto Efault;
pgoff = (addr - vma->vm_start) >> PAGE_SHIFT;
pgoff += vma->vm_pgoff;
--
1.8.1
--
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