lkml.org 
[lkml]   [2019]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.20 26/76] sctp: call iov_iter_revert() after sending ABORT
    Date
    4.20-stable review patch.  If anyone has any objections, please let me know.

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

    From: Xin Long <lucien.xin@gmail.com>

    [ Upstream commit 901efe12318b1ea8d3e2c88a7b75ed6e6d5d7245 ]

    The user msg is also copied to the abort packet when doing SCTP_ABORT in
    sctp_sendmsg_check_sflags(). When SCTP_SENDALL is set, iov_iter_revert()
    should have been called for sending abort on the next asoc with copying
    this msg. Otherwise, memcpy_from_msg() in sctp_make_abort_user() will
    fail and return error.

    Fixes: 4910280503f3 ("sctp: add support for snd flag SCTP_SENDALL process in sendmsg")
    Reported-by: Ying Xu <yinxu@redhat.com>
    Signed-off-by: Xin Long <lucien.xin@gmail.com>
    Acked-by: Neil Horman <nhorman@tuxdriver.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/sctp/socket.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/net/sctp/socket.c
    +++ b/net/sctp/socket.c
    @@ -1866,6 +1866,7 @@ static int sctp_sendmsg_check_sflags(str

    pr_debug("%s: aborting association:%p\n", __func__, asoc);
    sctp_primitive_ABORT(net, asoc, chunk);
    + iov_iter_revert(&msg->msg_iter, msg_len);

    return 0;
    }

    \
     
     \ /
      Last update: 2019-03-08 14:08    [W:4.559 / U:0.272 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site