From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Sun, 25 Jan 2015 22:33:23 +0000 (+0100)
Subject: NFC: st21nfcb: Avoid use of skb after free
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=20842466ec6d823ae9d3991b86527b6a1460ec63;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

NFC: st21nfcb: Avoid use of skb after free

Do not insert in send queue the skb that contains unknown Packet Control
Byte

Acked-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Anda-Maria Nicolae <anda-maria.nicolae@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---

diff --git a/drivers/nfc/st21nfcb/ndlc.c b/drivers/nfc/st21nfcb/ndlc.c
index ef0f997dae0a..5fbf59d2138c 100644
--- a/drivers/nfc/st21nfcb/ndlc.c
+++ b/drivers/nfc/st21nfcb/ndlc.c
@@ -138,7 +138,7 @@ static void llt_ndlc_requeue_data_pending(struct llt_ndlc *ndlc)
 		default:
 			pr_err("UNKNOWN Packet Control Byte=%d\n", pcb);
 			kfree_skb(skb);
-			break;
+			continue;
 		}
 		skb_queue_head(&ndlc->send_q, skb);
 	}