[Midnightbsd-cvs] src [9332] trunk/sys/vm/vnode_pager.c: Assert that the object type for the vnode' non-NULL v_object, passed

[laffer1 at midnightbsd.org]

Revision: 9332
          http://svnweb.midnightbsd.org/src/?rev=9332
Author:   laffer1
Date:     2017-03-04 11:00:24 -0500 (Sat, 04 Mar 2017)
Log Message:
-----------
Assert that the object type for the vnode' non-NULL v_object, passed
to vnode_pager_setsize(), is either OBJT_VNODE, or, if vnode was
already reclaimed, OBJT_DEAD.

More, if the object is terminated, do not perform the resizing operation.

Modified Paths:
--------------
    trunk/sys/vm/vnode_pager.c

Modified: trunk/sys/vm/vnode_pager.c
===================================================================
--- trunk/sys/vm/vnode_pager.c	2017-03-04 15:59:44 UTC (rev 9331)
+++ trunk/sys/vm/vnode_pager.c	2017-03-04 16:00:24 UTC (rev 9332)
@@ -380,6 +380,12 @@
 		return;
 /* 	ASSERT_VOP_ELOCKED(vp, "vnode_pager_setsize and not locked vnode"); */
 	VM_OBJECT_LOCK(object);
+	if (object->type == OBJT_DEAD) {
+		VM_OBJECT_UNLOCK(object);
+		return;
+	}
+	KASSERT(object->type == OBJT_VNODE,
+	    ("not vnode-backed object %p", object));
 	if (nsize == object->un_pager.vnp.vnp_size) {
 		/*
 		 * Hasn't changed size