[PATCH] davinci_emac: Fix use after free in davinci_emac_remove

From: Stefan Weil
Date: Tue Aug 03 2010 - 14:55:14 EST

free_netdev finally calls kfree which makes the contents
of ndev and priv (private data contained in ndev) invalid.

So iounmap should be called before free_netdev.

Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Chaithrika U S <chaithrika@xxxxxx>
Cc: Sriramakrishnan <srk@xxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Stefan Weil <weil@xxxxxxxxxxxxxxx>
drivers/net/davinci_emac.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 8cc8a43..866e6b8 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -2818,8 +2818,8 @@ static int __devexit davinci_emac_remove(struct platform_device *pdev)
release_mem_region(res->start, res->end - res->start + 1);

- free_netdev(ndev);
+ free_netdev(ndev);


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