From: Mark Rustad Date: Fri, 6 Jun 2014 01:57:00 +0000 (+0000) Subject: ixgbe: Fix possible null-dereference in error path X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=508a8c9e264e1057f663e578c47c5ffa00adb160;p=linux-beck.git ixgbe: Fix possible null-dereference in error path 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 Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index f5aa3311ea28..16e8e444c616 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; }