From: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Date: Mon, 2 Nov 2020 23:09:10 +0530
Subject: chelsio/chtls: fix always leaking ctrl_skb
Patch-mainline: v5.10-rc3
Git-commit: dbfe394dad33f99cf8458be50483ec40a5d29c34
References: bsc#1104270 FATE#325931

Correct skb refcount in alloc_ctrl_skb(), causing skb memleak
when chtls_send_abort() called with NULL skb.
it was always leaking the skb, correct it by incrementing skb
refs by one.

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Link: https://lore.kernel.org/r/20201102173909.24826-1-vinay.yadav@chelsio.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 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
@@ -176,7 +176,7 @@ static struct sk_buff *alloc_ctrl_skb(st
 {
 	if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
 		__skb_trim(skb, 0);
-		refcount_add(2, &skb->users);
+		refcount_inc(&skb->users);
 	} else {
 		skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
 	}