Hi Vladimir,
On Thu, Mar 10, 2016 at 10:13 AM, Vladimir Zapolskiy <vz@xxxxxxxxx> wrote:
> The kthread_run() function returns either a valid task_struct or
> ERR_PTR() value, check for NULL is invalid. The change fixes potential
> oops, e.g. in OOM situation.
>
> Signed-off-by: Vladimir Zapolskiy <vz@xxxxxxxxx>
> ---
> drivers/staging/wilc1000/linux_wlan.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c
> index 54fe9d7..5077c30 100644
> --- a/drivers/staging/wilc1000/linux_wlan.c
> +++ b/drivers/staging/wilc1000/linux_wlan.c
> @@ -849,10 +849,10 @@ static int wlan_initialize_threads(struct net_device *dev)
> PRINT_D(INIT_DBG, "Creating kthread for transmission\n");
> wilc->txq_thread = kthread_run(linux_wlan_txq_task, (void *)dev,
> "K_TXQ_TASK");
> - if (!wilc->txq_thread) {
> + if (IS_ERR(wilc->txq_thread)) {
> PRINT_ER("couldn't create TXQ thread\n");
> wilc->close = 0;
> - return -ENOBUFS;
> + return PTR_ERR(wilc->txq_thread);
Are you sure changing the error returned is correct? Do all the
callers of wlan_initialize_threads() handle the full range of errors
from kthread_run()?
Thanks,
--
Julian Calaby
Email: julian.calaby@xxxxxxxxx
Profile: http://www.google.com/profiles/julian.calaby/
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