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Commit 525c36c0 authored by Alok Chauhan's avatar Alok Chauhan
Browse files

msm: emac: Fix invalid pointer dereference 



Add defensive check to avoid null pointer
dereference during filling up transmit
descriptor.

Change-Id: Iee1bbcb46c3179ca16e7a4016d7969b2ad37ff01
Signed-off-by: default avatarAlok Chauhan <alokc@codeaurora.org>
parent e99d73e0

drivers/net/ethernet/qualcomm/emac/emac_main.c

+4 −1
Original line number Diff line number Diff line
@@ -796,6 +796,8 @@ static void emac_poll_hwtxtstamp(struct emac_adapter *adpt) 
				 */

				while ((pskb = __skb_dequeue(pending_q))

				       != skb) {

					if (!pskb)

						break;

					EMAC_HWTXTSTAMP_CB(pskb)->sec = 0;

					EMAC_HWTXTSTAMP_CB(pskb)->ns = 0;

					__skb_queue_tail(q, pskb);
@@ -1256,6 +1258,7 @@ static void emac_tx_map(struct emac_adapter *adpt, 
	/* The last buffer info contain the skb address,

	 * so it will be freed after unmap

	 */

	if (tpbuf)

		tpbuf->skb = skb;

}