From: David S. Miller <davem@davemloft.net>
Date: Sun, 28 Oct 2018 17:35:12 +0000 (-0700)
Subject: net: Properly unlink GRO packets on overflow.
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ece23711dd956cd5053c9cb03e9fe0668f9c8894;p=openwrt%2Fstaging%2Fblogic.git

net: Properly unlink GRO packets on overflow.

Just like with normal GRO processing, we have to initialize
skb->next to NULL when we unlink overflow packets from the
GRO hash lists.

Fixes: d4546c2509b1 ("net: Convert GRO SKB handling to list_head.")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index 022ad73d6253..77d43ae2a7bb 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5457,7 +5457,7 @@ static void gro_flush_oldest(struct list_head *head)
 	/* Do not adjust napi->gro_hash[].count, caller is adding a new
 	 * SKB to the chain.
 	 */
-	list_del(&oldest->list);
+	skb_list_del_init(oldest);
 	napi_gro_complete(oldest);
 }