Messages in this thread Patch in this message | | | From | Pan Bian <> | Subject | net: lapbether: fix double free | Date | Sun, 29 Oct 2017 21:57:22 +0800 |
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The function netdev_priv() returns the private data of the device. The memory to store the private data is allocated in alloc_netdev() and is released in netdev_free(). Calling kfree() on the return value of netdev_priv() after netdev_free() results in a double free bug.
Signed-off-by: Pan Bian <bianpan2016@163.com> --- drivers/net/wan/lapbether.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c index 63f7490..0e3f8ed 100644 --- a/drivers/net/wan/lapbether.c +++ b/drivers/net/wan/lapbether.c @@ -346,7 +346,6 @@ static int lapbeth_new_device(struct net_device *dev) fail: dev_put(dev); free_netdev(ndev); - kfree(lapbeth); goto out; } -- 1.9.1
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