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Date: Thu, 24 Jul 2014 06:13:11 -0700 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: davem@...emloft.net Cc: Mark Rustad <mark.d.rustad@...el.com>, netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [net-next 01/14] ixgbe: Fix possible null-dereference in error path From: Mark Rustad <mark.d.rustad@...el.com> In ixgbe_probe, the code at label err_dma can dereference adapter when it has a NULL value. The check is there to avoid disabling a disabled device. When adapter is NULL, treat it as if the device is enabled, because it is enabled in that case. Signed-off-by: Mark Rustad <mark.d.rustad@...el.com> Tested-by: Phil Schmitt <phillip.j.schmitt@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index f5aa331..16e8e44 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -8477,7 +8477,7 @@ err_alloc_etherdev: pci_select_bars(pdev, IORESOURCE_MEM)); err_pci_reg: err_dma: - if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) + if (!adapter || !test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) pci_disable_device(pdev); return err; } -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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