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authorSzymon Janc <szymon.janc@codecoup.pl>2017-04-24 18:25:04 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-20 14:27:02 +0200
commitff1c4cf24642a3598fd9adc7e110d0df2610d1d8 (patch)
treee5373faf0ff2b82e3539d9df02682eca3720bbd2 /net
parent9bd2cc56a08967dc389a4ea9b18869570549df64 (diff)
Bluetooth: Fix user channel for 32bit userspace on 64bit kernel
commit ab89f0bdd63a3721f7cd3f064f39fc4ac7ca14d4 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-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 b1eb8c09a660..c842f40c1173 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1164,7 +1164,8 @@ 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)