staging/lustre/lov: Move target sysfs symlink removal to LOV freeing

This helps to avoid use after free on unmount.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/lov/lov_obd.c b/drivers/staging/lustre/lustre/lov/lov_obd.c
index cd6ed58..5f4c115 100644 (file)
--- a/drivers/staging/lustre/lustre/lov/lov_obd.c
+++ b/drivers/staging/lustre/lustre/lov/lov_obd.c
@@ -107,6 +107,10 @@ static void lov_putref(struct obd_device *obd)
                        /* Disconnect */
                        __lov_del_obd(obd, tgt);
                }
+
+               if (lov->lov_tgts_kobj)
+                       kobject_put(lov->lov_tgts_kobj);
+
        } else {
                mutex_unlock(&lov->lov_lock);
        }
@@ -322,9 +326,6 @@ static int lov_disconnect(struct obd_export *exp)
                }
        }
 
-       if (lov->lov_tgts_kobj)
-               kobject_put(lov->lov_tgts_kobj);
-
        obd_putref(obd);
 
 out: