Patch "i40e/i40evf: Fix use after free in Rx cleanup path" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

i40e/i40evf: Fix use after free in Rx cleanup path

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     i40e-i40evf-fix-use-after-free-in-rx-cleanup-path.patch

and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexander Duyck <[email protected]>
Date: Tue, 21 Feb 2017 15:55:41 -0800
Subject: i40e/i40evf: Fix use after free in Rx cleanup path

From: Alexander Duyck <[email protected]>

[ Upstream commit 741b8b832a57402380be79d7d11a59eaf57fff3b ]

We need to reset skb back to NULL when we have freed it in the Rx cleanup path. I found one spot where this wasn't occurring so this patch fixes it.

---
 drivers/net/ethernet/intel/i40e/i40e_txrx.c   |    1 +
 drivers/net/ethernet/intel/i40evf/i40e_txrx.c |    1 +
 2 files changed, 2 insertions(+)

@@ -1820,6 +1820,7 @@ static int i40e_clean_rx_irq(struct i40e
 		 */
 		if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
 			dev_kfree_skb_any(skb);
+			skb = NULL;
 			continue;
 		}
 

@@ -1262,6 +1262,7 @@ static int i40e_clean_rx_irq(struct i40e
 		 */
 		if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
 			dev_kfree_skb_any(skb);
+			skb = NULL;
 			continue;
 		}
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/i40e-i40evf-fix-use-after-free-in-rx-cleanup-path.patch