From: Hans Verkuil Date: Thu, 15 Aug 2019 12:40:52 +0000 (-0300) Subject: media: radio/si470x: kill urb on error X-Git-Tag: v5.4-rc1~145^2~84 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0d616f2a3fdbf1304db44d451d9f07008556923b;p=thirdparty%2Flinux.git media: radio/si470x: kill urb on error In the probe() function radio->int_in_urb was not killed if an error occurred in the probe sequence. It was also missing in the disconnect. This caused this syzbot issue: https://syzkaller.appspot.com/bug?extid=2d4fc2a0c45ad8da7e99 Reported-and-tested-by: syzbot+2d4fc2a0c45ad8da7e99@syzkaller.appspotmail.com Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c index 49073747b1e7b..fedff68d8c496 100644 --- a/drivers/media/radio/si470x/radio-si470x-usb.c +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -734,7 +734,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, /* start radio */ retval = si470x_start_usb(radio); if (retval < 0) - goto err_all; + goto err_buf; /* set initial frequency */ si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ @@ -749,6 +749,8 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, return 0; err_all: + usb_kill_urb(radio->int_in_urb); +err_buf: kfree(radio->buffer); err_ctrl: v4l2_ctrl_handler_free(&radio->hdl); @@ -822,6 +824,7 @@ static void si470x_usb_driver_disconnect(struct usb_interface *intf) mutex_lock(&radio->lock); v4l2_device_disconnect(&radio->v4l2_dev); video_unregister_device(&radio->videodev); + usb_kill_urb(radio->int_in_urb); usb_set_intfdata(intf, NULL); mutex_unlock(&radio->lock); v4l2_device_put(&radio->v4l2_dev);