netdev - [PATCH net] net/mlx4: double free of dev

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Message-Id: <1433169704-32307-1-git-send-email-clsoto@linux.vnet.ibm.com>
Date:	Mon,  1 Jun 2015 09:41:42 -0500
From:	clsoto@...ux.vnet.ibm.com
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, amirv@...lanox.com, jackm@...lanox.com,
	brking@...ux.vnet.ibm.com, clsoto@...ux.vnet.ibm.com
Subject: [PATCH net] net/mlx4: double free of dev_vfs 

If user loads mlx4_core with num_vfs greater than supported
then variable dev->dev_vfs is freed 2 times after unloading
the driver.

Signed-off-by: Carol L Soto <clsoto@...ux.vnet.ibm.com>
---
 drivers/net/ethernet/mellanox/mlx4/main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2685,6 +2685,7 @@ disable_sriov:
 free_mem:
 	dev->persist->num_vfs = 0;
 	kfree(dev->dev_vfs);
+	dev->dev_vfs = NULL;
 	return dev_flags & ~MLX4_FLAG_MASTER;
 }
 

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