mm: fix lazy vmap purging (use-after-free error)

[safe/jmp/linux-2.6] / net / 9p / util.c

diff --git a/net/9p/util.c b/net/9p/util.c
index 958fc58..dc4ec05 100644 (file)
--- a/net/9p/util.c
+++ b/net/9p/util.c
@@ -105,6 +105,7 @@ retry:
        else if (error)
                return -1;
 
+       P9_DPRINTK(P9_DEBUG_MUX, " id %d pool %p\n", i, p);
        return i;
 }
 EXPORT_SYMBOL(p9_idpool_get);
@@ -121,6 +122,9 @@ EXPORT_SYMBOL(p9_idpool_get);
 void p9_idpool_put(int id, struct p9_idpool *p)
 {
        unsigned long flags;
+
+       P9_DPRINTK(P9_DEBUG_MUX, " id %d pool %p\n", id, p);
+
        spin_lock_irqsave(&p->lock, flags);
        idr_remove(&p->pool, id);
        spin_unlock_irqrestore(&p->lock, flags);