diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index f91b2f687343..a4eb31132229 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -263,7 +263,12 @@ static int xip_file_fault(struct vm_area_struct *vma, struct vm_fault *vmf) xip_pfn); if (err == -ENOMEM) return VM_FAULT_OOM; - BUG_ON(err); + /* + * err == -EBUSY is fine, we've raced against another thread + * that faulted-in the same page + */ + if (err != -EBUSY) + BUG_ON(err); return VM_FAULT_NOPAGE; } else { int err, ret = VM_FAULT_OOM;