Re: [PATCH 2/5] dvb-usb/af9005: initialize act_len

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On Tue, Nov 12, 2019 at 10:22:25AM +0100, Hans Verkuil wrote:
> The act_len variable was uninitialized, leading to a syzbot
> error.
> 
> Syzbot link:
> 
> https://syzkaller.appspot.com/bug?extid=9d42b7773d2fecd983ab
> 
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
> Reported-and-tested-by: syzbot+9d42b7773d2fecd983ab@xxxxxxxxxxxxxxxxxxxxxxxxx
> CC: Sean Young <sean@xxxxxxxx>

This is the same as:

https://patchwork.linuxtv.org/patch/59986/

Sean

> ---
>  drivers/media/usb/dvb-usb/af9005.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/usb/dvb-usb/af9005.c b/drivers/media/usb/dvb-usb/af9005.c
> index ac93e88d7038..89b4b5d84cdf 100644
> --- a/drivers/media/usb/dvb-usb/af9005.c
> +++ b/drivers/media/usb/dvb-usb/af9005.c
> @@ -554,7 +554,7 @@ static int af9005_boot_packet(struct usb_device *udev, int type, u8 *reply,
>  			      u8 *buf, int size)
>  {
>  	u16 checksum;
> -	int act_len, i, ret;
> +	int act_len = 0, i, ret;
>  
>  	memset(buf, 0, size);
>  	buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);
> -- 
> 2.24.0



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