Re: [PATCH] firewire: fix NULL derefencing in fwnet_probe()

From: Stefan Richter
Date: Mon May 12 2014 - 08:38:34 EST


On Apr 29 Daeseok Youn wrote:
> "dev" and "net" are NULL when alloc_netdev() is failed.
> So just unlock and return an error.
>
> Signed-off-by: Daeseok Youn <daeseok.youn@xxxxxxxxx>

Pushed to linux1394.git. Thank you.

> ---
> drivers/firewire/net.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
> index 4af0a7b..c398645 100644
> --- a/drivers/firewire/net.c
> +++ b/drivers/firewire/net.c
> @@ -1462,8 +1462,8 @@ static int fwnet_probe(struct fw_unit *unit,
>
> net = alloc_netdev(sizeof(*dev), "firewire%d", fwnet_init_dev);
> if (net == NULL) {
> - ret = -ENOMEM;
> - goto out;
> + mutex_unlock(&fwnet_device_mutex);
> + return -ENOMEM;
> }
>
> allocated_netdev = true;

--
Stefan Richter
-=====-====- -=-= -==--
http://arcgraph.de/sr/
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