Benoit Taine <benoit.taine@xxxxxxx> writes:
> This issue was reported by coccicheck using the semantic patch
> at scripts/coccinelle/api/memdup.cocci
>
> Signed-off-by: Benoit Taine <benoit.taine@xxxxxxx>
> ---
> Tested by compilation without errors.
>
> drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c | 3 +--
> drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c | 16 ++++++----------
> 2 files changed, 7 insertions(+), 12 deletions(-)
Benoit,
I believe this was already applied to staging-next - if you feel
something is missing. Could you please re-diff against the latest
staging-next tree.
Cheers,
Jes
commit 4a6eea4dcbc0328c3126fed264c42b0725bea659
Author: Benoit Taine <benoit.taine@xxxxxxx>
Date: Thu May 22 15:08:33 2014 +0200
staging: rtl8723au: Use kmemdup() instead of memcpy() to duplicate memory
This issue was reported by coccicheck using the semantic patch
at scripts/coccinelle/api/memdup.cocci, and tested by compilation.
Signed-off-by: Benoit Taine <benoit.taine@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
>
> diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> index e2d426a..f917edd 100644
> --- a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> +++ b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> @@ -339,12 +339,11 @@ int rtl8723a_FirmwareDownload(struct rtw_adapter *padapter)
> rtStatus = _FAIL;
> goto Exit;
> }
> - firmware_buf = kzalloc(fw->size, GFP_KERNEL);
> + firmware_buf = kmemdup(fw->data, fw->size, GFP_KERNEL);
> if (!firmware_buf) {
> rtStatus = _FAIL;
> goto Exit;
> }
> - memcpy(firmware_buf, fw->data, fw->size);
> buf = firmware_buf;
> fw_size = fw->size;
> release_firmware(fw);
> diff --git a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> index 182f57c..735eb99 100644
> --- a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> +++ b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> @@ -1426,14 +1426,13 @@ static int rtw_cfg80211_set_probe_req_wpsp2pie(struct rtw_adapter *padapter,
> pmlmepriv->wps_probe_req_ie = NULL;
> }
>
> - pmlmepriv->wps_probe_req_ie =
> - kmalloc(wps_ielen, GFP_KERNEL);
> + pmlmepriv->wps_probe_req_ie = kmemdup(wps_ie,
> + wps_ielen, GFP_KERNEL);
> if (pmlmepriv->wps_probe_req_ie == NULL) {
> DBG_8723A("%s()-%d: kmalloc() ERROR!\n",
> __func__, __LINE__);
> return -EINVAL;
> }
> - memcpy(pmlmepriv->wps_probe_req_ie, wps_ie, wps_ielen);
> pmlmepriv->wps_probe_req_ie_len = wps_ielen;
> }
> }
> @@ -1697,12 +1696,11 @@ static int rtw_cfg80211_set_wpa_ie(struct rtw_adapter *padapter, const u8 *pie,
> ret = -EINVAL;
> goto exit;
> }
> - buf = kzalloc(ielen, GFP_KERNEL);
> + buf = kmemdup(pie, ielen, GFP_KERNEL);
> if (buf == NULL) {
> ret = -ENOMEM;
> goto exit;
> }
> - memcpy(buf, pie, ielen);
>
> /* dump */
> DBG_8723A("set wpa_ie(length:%zu):\n", ielen);
> @@ -3178,14 +3176,13 @@ static int rtw_cfg80211_set_beacon_wpsp2pie(struct net_device *ndev, char *buf,
> pmlmepriv->wps_beacon_ie = NULL;
> }
>
> - pmlmepriv->wps_beacon_ie =
> - kmalloc(wps_ielen, GFP_KERNEL);
> + pmlmepriv->wps_beacon_ie = kmemdup(wps_ie, wps_ielen,
> + GFP_KERNEL);
> if (pmlmepriv->wps_beacon_ie == NULL) {
> DBG_8723A("%s()-%d: kmalloc() ERROR!\n",
> __func__, __LINE__);
> return -EINVAL;
> }
> - memcpy(pmlmepriv->wps_beacon_ie, wps_ie, wps_ielen);
> pmlmepriv->wps_beacon_ie_len = wps_ielen;
>
> #ifdef CONFIG_8723AU_AP_MODE
> @@ -3270,14 +3267,13 @@ static int rtw_cfg80211_set_assoc_resp_wpsp2pie(struct net_device *net,
> pmlmepriv->wps_assoc_resp_ie = NULL;
> }
>
> - pmlmepriv->wps_assoc_resp_ie = kmalloc(len, GFP_KERNEL);
> + pmlmepriv->wps_assoc_resp_ie = kmemdup(buf, len, GFP_KERNEL);
> if (pmlmepriv->wps_assoc_resp_ie == NULL) {
> DBG_8723A("%s()-%d: kmalloc() ERROR!\n",
> __func__, __LINE__);
> return -EINVAL;
>
> }
> - memcpy(pmlmepriv->wps_assoc_resp_ie, buf, len);
> pmlmepriv->wps_assoc_resp_ie_len = len;
> }
>
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