mlx4: Fix access to freed memory
catas_reset() uses pointer to mlx4_priv, but mlx4_priv is not valid
after call mlx4_restart_one().
Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Acked-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mlx4/catas.c b/drivers/net/mlx4/catas.c
index aa9674b..f599294 100644
--- a/drivers/net/mlx4/catas.c
+++ b/drivers/net/mlx4/catas.c
@@ -96,12 +96,17 @@
spin_unlock_irq(&catas_lock);
list_for_each_entry_safe(priv, tmppriv, &tlist, catas_err.list) {
+ struct pci_dev *pdev = priv->dev.pdev;
+
ret = mlx4_restart_one(priv->dev.pdev);
- dev = &priv->dev;
+ /* 'priv' now is not valid */
if (ret)
- mlx4_err(dev, "Reset failed (%d)\n", ret);
- else
+ printk(KERN_ERR "mlx4 %s: Reset failed (%d)\n",
+ pci_name(pdev), ret);
+ else {
+ dev = pci_get_drvdata(pdev);
mlx4_dbg(dev, "Reset succeeded\n");
+ }
}
}