* [PATCH] staging: rtl8723au: Fix resource leak
@ 2015-09-27 19:30 Mateusz Kulikowski
2015-09-28 11:23 ` Sudip Mukherjee
0 siblings, 1 reply; 2+ messages in thread
From: Mateusz Kulikowski @ 2015-09-27 19:30 UTC (permalink / raw)
To: Larry.Finger, Jes.Sorensen
Cc: Mateusz Kulikowski, gregkh, linux-wireless, devel, linux-kernel
Firmware was not released properly if kmemdup fails.
Addresses-Coverity-Id: 1269118
Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
---
drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
index cd014f7..87bb87f 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
@@ -249,13 +249,13 @@ int rtl8723a_FirmwareDownload(struct rtw_adapter *padapter)
goto Exit;
}
firmware_buf = kmemdup(fw->data, fw->size, GFP_KERNEL);
+ release_firmware(fw);
if (!firmware_buf) {
rtStatus = _FAIL;
goto Exit;
}
buf = firmware_buf;
fw_size = fw->size;
- release_firmware(fw);
/* To Check Fw header. Added by tynli. 2009.12.04. */
pFwHdr = (struct rt_8723a_firmware_hdr *)firmware_buf;
--
2.1.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] staging: rtl8723au: Fix resource leak
2015-09-27 19:30 [PATCH] staging: rtl8723au: Fix resource leak Mateusz Kulikowski
@ 2015-09-28 11:23 ` Sudip Mukherjee
0 siblings, 0 replies; 2+ messages in thread
From: Sudip Mukherjee @ 2015-09-28 11:23 UTC (permalink / raw)
To: Mateusz Kulikowski
Cc: Larry.Finger, Jes.Sorensen, devel, gregkh, linux-wireless,
linux-kernel
On Sun, Sep 27, 2015 at 09:30:54PM +0200, Mateusz Kulikowski wrote:
> Firmware was not released properly if kmemdup fails.
>
> Addresses-Coverity-Id: 1269118
> Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
> ---
> drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> index cd014f7..87bb87f 100644
> --- a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> +++ b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> @@ -249,13 +249,13 @@ int rtl8723a_FirmwareDownload(struct rtw_adapter *padapter)
> goto Exit;
> }
> firmware_buf = kmemdup(fw->data, fw->size, GFP_KERNEL);
> + release_firmware(fw);
> if (!firmware_buf) {
> rtStatus = _FAIL;
> goto Exit;
> }
> buf = firmware_buf;
> fw_size = fw->size;
> - release_firmware(fw);
You are releasing the firmware and then accessing fw->size here. That
just introduced a NULL pointer dereference.
regards
sudip
^ permalink raw reply [flat|nested] 2+ messages in thread
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