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authorLuca Tettamanti <kronos.it@gmail.com>2010-09-22 10:41:58 +0000
committerDavid S. Miller <davem@davemloft.net>2010-09-22 13:52:45 -0700
commitec5a32f67c603b11d68eb283d94eb89a4f6cfce1 (patch)
tree5f7d7f48f40bf998390da7da43ef40dddfb3d933 /drivers/net/atlx
parent56b49f4b8f6728b91d10c556c116175051b77b60 (diff)
atl1: fix resume
adapter->cmb.cmb is initialized when the device is opened and freed when it's closed. Accessing it unconditionally during resume results either in a crash (NULL pointer dereference, when the interface has not been opened yet) or data corruption (when the interface has been used and brought down adapter->cmb.cmb points to a deallocated memory area). Cc: stable@kernel.org Signed-off-by: Luca Tettamanti <kronos.it@gmail.com> Acked-by: Chris Snook <chris.snook@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/atlx')
-rw-r--r--drivers/net/atlx/atl1.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index 63b9ba0cc67e..bbd6e3009be0 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -2847,10 +2847,11 @@ static int atl1_resume(struct pci_dev *pdev)
pci_enable_wake(pdev, PCI_D3cold, 0);
atl1_reset_hw(&adapter->hw);
- adapter->cmb.cmb->int_stats = 0;
- if (netif_running(netdev))
+ if (netif_running(netdev)) {
+ adapter->cmb.cmb->int_stats = 0;
atl1_up(adapter);
+ }
netif_device_attach(netdev);
return 0;