net: fix __dst_destroy_metrics_generic()

dst_default_metrics is readonly, we dont want to kfree() it later. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
sasich · May 24, 2011 · b30c516 · b30c516
1 parent 19694ac
commit b30c516
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/core/dst.c b/net/core/dst.c
@@ -315,7 +315,7 @@ void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old)
 {
 	unsigned long prev, new;
 
-	new = (unsigned long) dst_default_metrics;
+	new = ((unsigned long) dst_default_metrics) | DST_METRICS_READ_ONLY;
 	prev = cmpxchg(&dst->_metrics, old, new);
 	if (prev == old)
 		kfree(__DST_METRICS_PTR(old));