diff options
-rw-r--r-- | mm/madvise.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index af3d573b0141..4e196155a0c3 100644 --- a/mm/madvise.c +++ b/mm/madvise.c | |||
@@ -168,6 +168,9 @@ static long madvise_remove(struct vm_area_struct *vma, | |||
168 | return -EINVAL; | 168 | return -EINVAL; |
169 | } | 169 | } |
170 | 170 | ||
171 | if ((vma->vm_flags & (VM_SHARED|VM_WRITE)) != (VM_SHARED|VM_WRITE)) | ||
172 | return -EACCES; | ||
173 | |||
171 | mapping = vma->vm_file->f_mapping; | 174 | mapping = vma->vm_file->f_mapping; |
172 | 175 | ||
173 | offset = (loff_t)(start - vma->vm_start) | 176 | offset = (loff_t)(start - vma->vm_start) |