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authorSzymon Janc <szymon.janc@codecoup.pl>2017-04-24 18:25:04 -0700
committerMarcel Holtmann <marcel@holtmann.org>2017-04-30 12:22:14 +0200
commitab89f0bdd63a3721f7cd3f064f39fc4ac7ca14d4 (patch)
tree45ecfaacb9ee7f90284f75dc4f6c67d771b07972 /net/bluetooth
parent763d9a302ab18da0a0078c9788ed6566d0c974e3 (diff)
downloadlinux-ab89f0bdd63a3721f7cd3f064f39fc4ac7ca14d4.tar.bz2
Bluetooth: Fix user channel for 32bit userspace on 64bit kernel
Running 32bit userspace on 64bit kernel results in MSG_CMSG_COMPAT being defined as 0x80000000. This results in sendmsg failure if used from 32bit userspace running on 64bit kernel. Fix this by accounting for MSG_CMSG_COMPAT in flags check in hci_sock_sendmsg. Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl> Signed-off-by: Marko Kiiskila <marko@runtime.io> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/hci_sock.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index f64d6566021f..638bf0e1a2e3 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1680,7 +1680,8 @@ static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg,
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE))
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE|
+ MSG_CMSG_COMPAT))
return -EINVAL;
if (len < 4 || len > HCI_MAX_FRAME_SIZE)