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-rw-r--r--sys/vm/vnode_pager.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/vm/vnode_pager.c b/sys/vm/vnode_pager.c
index 16545848a57e..bf6a1c9dcd9d 100644
--- a/sys/vm/vnode_pager.c
+++ b/sys/vm/vnode_pager.c
@@ -148,6 +148,8 @@ vnode_pager_alloc(handle, size, prot, offset)
else
object->flags = 0;
+ if (vp->v_usecount == 0)
+ panic("vnode_pager_alloc: no vnode reference");
/*
* Hold a reference to the vnode and initialize object data.
*/