lkml.org 
[lkml]   [2017]   [May]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.10 84/93] Bluetooth: Fix user channel for 32bit userspace on 64bit kernel
    Date
    4.10-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Szymon Janc <szymon.janc@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.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>

    ---
    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
    @@ -1680,7 +1680,8 @@ static int hci_sock_sendmsg(struct socke
    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)

    \
     
     \ /
      Last update: 2017-05-18 13:37    [W:3.113 / U:0.128 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site