From: Antoine Tenart <atenart@kernel.org>
Date: Thu, 18 Mar 2021 18:37:52 +0000 (+0100)
Subject: net: NULL the old xps map entries when freeing them
X-Git-Tag: microblaze-v5.14~96^2~495^2
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=75b2758abc355c410dd335d45b2d40f920e27cde;p=linux-2.6-microblaze.git

net: NULL the old xps map entries when freeing them

In __netif_set_xps_queue, old map entries from the old dev_maps are
freed but their corresponding entry in the old dev_maps aren't NULLed.
Fix this.

Signed-off-by: Antoine Tenart <atenart@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index d5f6ba209f1e..4961fc2e9b19 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2764,6 +2764,7 @@ int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask,
 					continue;
 			}
 
+			RCU_INIT_POINTER(dev_maps->attr_map[tci], NULL);
 			kfree_rcu(map, rcu);
 		}
 	}