1 files changed, 9 insertions, 1 deletions

diff --git a/net/core/dst.c b/net/core/dst.c
index 069d51d29414..56d63612e1e4 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -149,7 +149,15 @@ int dst_discard(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(dst_discard);
 
-const u32 dst_default_metrics[RTAX_MAX];
+const u32 dst_default_metrics[RTAX_MAX + 1] = {
+        /* This initializer is needed to force linker to place this variable
+         * into const section. Otherwise it might end into bss section.
+         * We really want to avoid false sharing on this variable, and catch
+         * any writes on it.
+         */
+        [RTAX_MAX] = 0xdeadbeef,
+};
+
 
 void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
                 int initial_ref, int initial_obsolete, unsigned short flags)