From: Malcolm Priestley Date: Mon, 23 Sep 2013 19:30:42 +0000 (+0100) Subject: staging: vt6656: [BUG] iwctl_siwencodeext return if device not open X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5e8c3d3e41b0bf241e830a1ee0752405adecc050;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git staging: vt6656: [BUG] iwctl_siwencodeext return if device not open Don't allow entry to iwctl_siwencodeext if device not open. This fixes a race condition where wpa supplicant/network manager enters the function when the device is already closed. Signed-off-by: Malcolm Priestley Cc: stable@vger.kernel.org # 3.8+ Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/vt6656/iwctl.c b/drivers/staging/vt6656/iwctl.c index d0cf7d8a20e5..8872e0f84f40 100644 --- a/drivers/staging/vt6656/iwctl.c +++ b/drivers/staging/vt6656/iwctl.c @@ -1634,6 +1634,9 @@ int iwctl_siwencodeext(struct net_device *dev, struct iw_request_info *info, if (pMgmt == NULL) return -EFAULT; + if (!(pDevice->flags & DEVICE_FLAGS_OPENED)) + return -ENODEV; + buf = kzalloc(sizeof(struct viawget_wpa_param), GFP_KERNEL); if (buf == NULL) return -ENOMEM;