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net/i40e: fix use after free in FDIR release

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The original code use a heap pointer after it is freed.

Fixes: 460d1679586e ("drivers/net: delete HW rings while freeing queues")
Cc: stable@dpdk.org

Signed-off-by: Dapeng Yu <dapengx.yu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Dapeng Yu 2021-06-04 10:02:01 +08:00 committed by Qi Zhang
parent 8751894ed4
commit 4b5b8ce8ff
1 changed files with 2 additions and 2 deletions
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4
drivers/net/i40e/i40e_fdir.c
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@ -301,11 +301,11 @@ i40e_fdir_teardown(struct i40e_pf *pf)
if (err)
PMD_DRV_LOG(DEBUG, "Failed to do FDIR RX switch off");
i40e_dev_rx_queue_release(pf->fdir.rxq);
rte_eth_dma_zone_free(dev, "fdir_rx_ring", pf->fdir.rxq->queue_id);
i40e_dev_rx_queue_release(pf->fdir.rxq);
pf->fdir.rxq = NULL;
i40e_dev_tx_queue_release(pf->fdir.txq);
rte_eth_dma_zone_free(dev, "fdir_tx_ring", pf->fdir.txq->queue_id);
i40e_dev_tx_queue_release(pf->fdir.txq);
pf->fdir.txq = NULL;
i40e_vsi_release(vsi);
pf->fdir.fdir_vsi = NULL;