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SubjectRe: usb/media/em28xx: use-after-free in em28xx_dvb_fini

Quoting Andrey Konovalov <andreyknvl@google.com>:

> On Tue, Nov 7, 2017 at 10:18 PM, Gustavo A. R. Silva
> <garsilva@embeddedor.com> wrote:
>> Hi Andrey,
>>
>> Could you please try this patch?
>>
>> Thank you
>>
>> Gustavo A. R. Silva
>
> Hi Gustavo,
>
> Still see the crash with your patch.
>
> Thanks!
>

Thank you, Andrey. I will look into this further.

--
Gustavo A. R. Silva

>>
>> ---
>> drivers/media/usb/em28xx/em28xx-dvb.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c
>> b/drivers/media/usb/em28xx/em28xx-dvb.c
>> index 4a7db62..fc3fb92 100644
>> --- a/drivers/media/usb/em28xx/em28xx-dvb.c
>> +++ b/drivers/media/usb/em28xx/em28xx-dvb.c
>> @@ -2073,6 +2073,9 @@ static int em28xx_dvb_fini(struct em28xx *dev)
>> struct em28xx_dvb *dvb;
>> struct i2c_client *client;
>>
>> + if (!dev)
>> + return 0;
>> +
>> if (dev->is_audio_only) {
>> /* Shouldn't initialize IR for this interface */
>> return 0;
>> --
>> 2.7.4
>>






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