linux-kernel - [PATCH 5.4 24/62] chtls: Replace skb_dequeue with skb

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Date:   Fri, 15 Jan 2021 13:27:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Vinay Kumar Yadav <vinay.yadav@...lsio.com>,
        Ayush Sawal <ayush.sawal@...lsio.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.4 24/62] chtls: Replace skb_dequeue with skb_peek

From: Ayush Sawal <ayush.sawal@...lsio.com>

[ Upstream commit a84b2c0d5fa23da6d6c8c0d5f5c93184a2744d3e ]

The skb is unlinked twice, one in __skb_dequeue in function
chtls_reset_synq() and another in cleanup_syn_rcv_conn().
So in this patch using skb_peek() instead of __skb_dequeue(),
so that unlink will be handled only in cleanup_syn_rcv_conn().

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@...lsio.com>
Signed-off-by: Ayush Sawal <ayush.sawal@...lsio.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/crypto/chelsio/chtls/chtls_cm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -577,7 +577,7 @@ static void chtls_reset_synq(struct list
 
 	while (!skb_queue_empty(&listen_ctx->synq)) {
 		struct chtls_sock *csk =
-			container_of((struct synq *)__skb_dequeue
+			container_of((struct synq *)skb_peek
 				(&listen_ctx->synq), struct chtls_sock, synq);
 		struct sock *child = csk->sk;