target/linux/brcm2708/patches-4.4/0493-Bluetooth-Fix-l2cap_sock_setsockopt-with-optname-BT_.patch

   1 From 2b3cf031dfcef6f4fc803ae451364c70482404a8 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?=
   3  <amadeusz.slawinski@tieto.com>
   4 Date: Thu, 14 Jul 2016 10:50:23 +0200
   5 Subject: [PATCH] Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 commit 23bc6ab0a0912146fd674a0becc758c3162baabc upstream.
  11
  12 When we retrieve imtu value from userspace we should use 16 bit pointer
  13 cast instead of 32 as it's defined that way in headers. Fixes setsockopt
  14 calls on big-endian platforms.
  15
  16 Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com>
  17 Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19 ---
  20  net/bluetooth/l2cap_sock.c | 2 +-
  21  1 file changed, 1 insertion(+), 1 deletion(-)
  22
  23 --- a/net/bluetooth/l2cap_sock.c
  24 +++ b/net/bluetooth/l2cap_sock.c
  25 @@ -817,7 +817,7 @@ static int l2cap_sock_setsockopt(struct
  26                         break;
  27                 }
  28
  29 -               if (get_user(opt, (u32 __user *) optval)) {
  30 +               if (get_user(opt, (u16 __user *) optval)) {
  31                         err = -EFAULT;
  32                         break;
  33                 }