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| author | Pan Bian <bianpan2016@163.com> | 2017-04-24 02:40:28 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-04-26 11:03:49 +0200 |
| commit | 9dc7efd3978aa67ae598129d2a3f240b390ce508 (patch) | |
| tree | a6728a3dbdb4d8c57a2a6f5dd68109048e2b9228 /drivers/net/wireless/rndis_wlan.c | |
| parent | libertas: check return value of alloc_workqueue (diff) | |
| download | linux-9dc7efd3978aa67ae598129d2a3f240b390ce508.tar.xz linux-9dc7efd3978aa67ae598129d2a3f240b390ce508.zip | |
rndis_wlan: add return value validation
Function create_singlethread_workqueue() will return a NULL pointer if
there is no enough memory, and its return value should be validated
before using. However, in function rndis_wlan_bind(), its return value
is not checked. This may cause NULL dereference bugs. This patch fixes
it.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/rndis_wlan.c')
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index eb513628d801..490068c02054 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -3428,6 +3428,10 @@ static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf) /* because rndis_command() sleeps we need to use workqueue */ priv->workqueue = create_singlethread_workqueue("rndis_wlan"); + if (!priv->workqueue) { + wiphy_free(wiphy); + return -ENOMEM; + } INIT_WORK(&priv->work, rndis_wlan_worker); INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller); INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results); |