xfrm: Use __skb_queue_tail in xfrm_trans_queue

We do not need locking in xfrm_trans_queue because it is designed
to use per-CPU buffers.  However, the original code incorrectly
used skb_queue_tail which takes the lock.  This patch switches
it to __skb_queue_tail instead.

Reported-and-tested-by: Artem Savkov <[email protected]>
Fixes: acf568ee859f ("xfrm: Reinject transport-mode packets...")
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>

diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 3f6f6f8c9fa5224e75c1b62f299f217da172d370..5b2409746ae0a14c491cc8dfd316facc5cd67347 100644 (file)
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -518,7 +518,7 @@ int xfrm_trans_queue(struct sk_buff *skb,
                return -ENOBUFS;
 
        XFRM_TRANS_SKB_CB(skb)->finish = finish;
-       skb_queue_tail(&trans->queue, skb);
+       __skb_queue_tail(&trans->queue, skb);
        tasklet_schedule(&trans->tasklet);
        return 0;
 }