[RFC PATCH] NFC: st21nfcb: Avoid use of skb after free

From: Anda-Maria Nicolae
Date: Thu Jan 15 2015 - 05:28:32 EST


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

Signed-off-by: Anda-Maria Nicolae <anda-maria.nicolae@xxxxxxxxx>
---
Only compile tested, please have a look

drivers/nfc/st21nfcb/ndlc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/st21nfcb/ndlc.c b/drivers/nfc/st21nfcb/ndlc.c
index bac50e8..72659a3 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);
}
--
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/