3.16.47-rc1 review patch. If anyone has any objections, please let me know.
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From: Szymon Janc <szymon.j...@codecoup.pl>
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.j...@codecoup.pl>
Signed-off-by: Marko Kiiskila <ma...@runtime.io>
Signed-off-by: Marcel Holtmann <mar...@holtmann.org>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
net/bluetooth/hci_sock.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -886,7 +886,8 @@ static int hci_sock_sendmsg(struct kiocb
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)
