6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Taehee Yoo <ap420073@xxxxxxxxx>
[ Upstream commit bec161add35b478a7746bf58bcdea6faa19129ef ]
amt driver uses skb->cb for storing tunnel information.
This job is worked before TC layer and then amt driver load tunnel info
from skb->cb after TC layer.
So, its cb area should not be overwrapped with CB area used by TC.
In order to not use cb area used by TC, it skips the biggest cb
structure used by TC, which was qdisc_skb_cb.
But it's not anymore.
Currently, biggest structure of TC's CB is tc_skb_cb.
So, it should skip size of tc_skb_cb instead of qdisc_skb_cb.
Fixes: ec624fe740b4 ("net/sched: Extend qdisc control block with tc control block")
Signed-off-by: Taehee Yoo <ap420073@xxxxxxxxx>
Acked-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Reviewed-by: Jamal Hadi Salim <jhs@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240107144241.4169520-1-ap420073@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/amt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index 2d20be6ffb7e..ddd087c2c3ed 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -11,7 +11,7 @@
#include <linux/net.h>
#include <linux/igmp.h>
#include <linux/workqueue.h>
-#include <net/sch_generic.h>
+#include <net/pkt_sched.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/udp.h>
@@ -80,11 +80,11 @@ static struct mld2_grec mldv2_zero_grec;
static struct amt_skb_cb *amt_skb_cb(struct sk_buff *skb)
{
- BUILD_BUG_ON(sizeof(struct amt_skb_cb) + sizeof(struct qdisc_skb_cb) >
+ BUILD_BUG_ON(sizeof(struct amt_skb_cb) + sizeof(struct tc_skb_cb) >
sizeof_field(struct sk_buff, cb));
return (struct amt_skb_cb *)((void *)skb->cb +
- sizeof(struct qdisc_skb_cb));
+ sizeof(struct tc_skb_cb));
}
static void __amt_source_gc_work(void)
--
2.43.0
