From 0d616f2a3fdbf1304db44d451d9f07008556923b Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Thu, 15 Aug 2019 09:40:52 -0300 Subject: 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 --- drivers/media/radio/si470x/radio-si470x-usb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/media/radio') diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c index 49073747b1e7..fedff68d8c49 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); -- cgit v1.2.3-58-ga151