diff options
| -rw-r--r-- | daemon/graphdriver/overlay2/overlay.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/daemon/graphdriver/overlay2/overlay.go b/daemon/graphdriver/overlay2/overlay.go index 39e8cf246d..11d53029ca 100644 --- a/daemon/graphdriver/overlay2/overlay.go +++ b/daemon/graphdriver/overlay2/overlay.go @@ -573,14 +573,14 @@ func (d *Driver) Get(id, mountLabel string) (_ containerfs.ContainerFS, retErr e // the page size. The mount syscall fails if the mount data cannot // fit within a page and relative links make the mount data much // smaller at the expense of requiring a fork exec to chroot. - if len(mountData) > pageSize { + if len(mountData) > pageSize-1 { if readonly { opts = indexOff + "lowerdir=" + path.Join(id, diffDirName) + ":" + string(lowers) } else { opts = indexOff + "lowerdir=" + string(lowers) + ",upperdir=" + path.Join(id, diffDirName) + ",workdir=" + path.Join(id, workDirName) } mountData = label.FormatMountLabel(opts, mountLabel) - if len(mountData) > pageSize { + if len(mountData) > pageSize-1 { return nil, fmt.Errorf("cannot mount layer, mount label too large %d", len(mountData)) } |