From 23bc6ab0a0912146fd674a0becc758c3162baabc Mon Sep 17 00:00:00 2001
From: =?utf8?q?Amadeusz=20S=C5=82awi=C5=84ski?=
<amadeusz.slawinski@tieto.com>
Date: Thu, 14 Jul 2016 10:50:23 +0200
Subject: [PATCH] Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
MIME-Version: 1.0
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When we retrieve imtu value from userspace we should use 16 bit pointer
cast instead of 32 as it's defined that way in headers. Fixes setsockopt
calls on big-endian platforms.
Signed-off-by: Amadeusz SÅawiÅski <amadeusz.slawinski@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
---
net/bluetooth/l2cap_sock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 388ee8b591450..1842141baedb6 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -927,7 +927,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
break;
}
- if (get_user(opt, (u32 __user *) optval)) {
+ if (get_user(opt, (u16 __user *) optval)) {
err = -EFAULT;
break;
}
--
2.30.2