Code: BOOLEAN UIPC_Send(tUIPC_CH_ID ch_id, UINT16 msg_evt, UINT8 *p_buf,
        UINT16 msglen)
{
    UNUSED(msg_evt);

    BTIF_TRACE_DEBUG("UIPC_Send : ch_id:%d %d bytes", ch_id, msglen);

 
     UIPC_LOCK();
 
    if (write(uipc_main.ch[ch_id].fd, p_buf, msglen) < 0)
     {
         BTIF_TRACE_ERROR("failed to write (%s)", strerror(errno));
     }

    UIPC_UNLOCK();

 return FALSE;
}

Vulnerability Type: DoS 
CWE ID: CWE-284
Summary: Bluetooth in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-08-01 allows attackers to cause a denial of service (loss of Bluetooth 911 functionality) via a crafted application that sends a signal to a Bluetooth process, aka internal bug 28885210.
Commit Message: DO NOT MERGE Fix potential DoS caused by delivering signal to BT process

Bug: 28885210
Change-Id: I63866d894bfca47464d6e42e3fb0357c4f94d360

 Conflicts:
	btif/co/bta_hh_co.c
	btif/src/btif_core.c
Merge conflict resolution of ag/1161415 (referencing ag/1164670)
- Directly into mnc-mr2-release
