drivers/hid/uhid.c: check write() bitness using in_compat_syscall

uhid changes the format expected in write() depending on bitness.  It
should check the syscall bitness directly.

Signed-off-by: Andy Lutomirski <[email protected]>
Cc: David Herrmann <[email protected]>
Acked-by: Jiri Kosina <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andy Lutomirski 2016-03-22 14:25:24 -07:00 • committed by Linus Torvalds
commit 7365abbade

View file

@ -384,7 +384,7 @@ struct uhid_create_req_compat {
static int uhid_event_from_user(const char __user *buffer, size_t len,
struct uhid_event *event)
{
if (is_compat_task()) {
if (in_compat_syscall()) {
u32 type;
if (get_user(type, buffer))