Commit 29d0790e authored Nov 26, 2013 by Shannon Nelson Committed by Jeff Kirsher Dec 17, 2013

i40e: prevent null pointer exception in dump descriptor



Check that rings were allocated before trying to reference them.

Change-Id: I33151e55ab7a7a305fecdb88ccb2709ac246b7c7
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

parent 3753cb24

drivers/net/ethernet/intel/i40e/i40e_debugfs.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -782,6 +782,12 @@ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
		dev_info(&pf->pdev->dev, "dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
		return;
		}
		if (!vsi->tx_rings) {
		dev_info(&pf->pdev->dev,
		"descriptor rings have not been allocated for vsi %d\n",
		vsi_seid);
		return;
		}
		if (is_rx_ring)
		ring = *vsi->rx_rings[ring_id];
		else