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

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.

Change-ID: Iaca68934200732cd4a63eb0bd83b539c95f8c4dd
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
hifive-unleashed-5.1
Alexander Duyck 2017-02-21 15:55:41 -08:00 committed by Jeff Kirsher
parent f25571b576
commit 741b8b832a
2 changed files with 2 additions and 0 deletions
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1
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -1941,6 +1941,7 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
*/
if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
dev_kfree_skb_any(skb);
skb = NULL;
continue;
}

1
drivers/net/ethernet/intel/i40evf/i40e_txrx.c
View File

@ -1299,6 +1299,7 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
*/
if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
dev_kfree_skb_any(skb);
skb = NULL;
continue;
}