Re: [PATCH] video: fbdev: udlfb: Fix use after free on dlfb_usb_probe error path

[Bartlomiej Zolnierkiewicz]

On Friday, August 11, 2017 03:59:01 PM Anton Vasilyev wrote:
> If dlfb_usb_probe drops to error path then there is only one
> kref_init() call and no kref_get(), so second kref_put() leads to
> use after free.
> 
> The patch removes superfluous kref_put on dlfb_usb_probe error path.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Anton Vasilyev <vasilyev@xxxxxxxxx>

Patch queued for 4.14, thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics