tree 0b3033347fe1709138b327b9032b704ee400c53c
parent 64b9533ec14bdfb8e77bbe1ae4f4842043d22aeb
author Florian Fainelli <f.fainelli@gmail.com> 1493168171 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1495016453 +0200

usb: core: Check URB setup_packet and transfer_buffer sanity

Update usb_hcd_map_urb_for_dma() to check for an URB's setup_packet and
transfer_buffer sanity. We first check that urb->setup_packet is neither
coming from vmalloc space nor is an on stack buffer, and if that's the
case, produce a warning and return an error. For urb->transfer_buffer
there is an existing is_vmalloc_addr() check so we just supplement that
with an object_is_on_stack() check, produce a warning if that is the case
and also return an error.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>