(gdb) bt full
#0  0x00007f9739f09da4 in _int_malloc () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f9739f0b87c in malloc () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f9739f5de17 in re_search_internal () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007f9739f64f65 in regexec@@GLIBC_2.3.4 () from /lib64/libc.so.6
No symbol table info available.
#4  0x00007f973ce376e4 in virLogProbablyLogMessage (
    str=str@entry=0x7f97182e1952 "2015-12-09T06:36:17.838944Z qemu-kvm: -chardev socket,id=charchannel1,path=/var/lib/libvirt/qemu1/rhel7.0-rhel.agent,server,nowait: Failed to bind socket to /var/lib/libvirt/qemu1/rhel7.0-rhel.agent: "...) at util/virlog.c:1413
No locals.
#5  0x00007f9723f7d300 in qemuProcessReadLog (msg=0x7f972cf69478, logCtxt=0x7f97182e1952) at qemu/qemu_process.c:1667
        buf = 0x7f97182e13d0 "=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/fs/r7_ext4.raw,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scs"...
        got = 1636
        eol = 0x7f97182e1a33 ""
        filter_next = 0x7f97182e1952 "2015-12-09T06:36:17.838944Z qemu-kvm: -chardev socket,id=charchannel1,path=/var/lib/libvirt/qemu1/rhel7.0-rhel.agent,server,nowait: Failed to bind socket to /var/lib/libvirt/qemu1/rhel7.0-rhel.agent: "...
#6  qemuProcessReportLogError (logCtxt=logCtxt@entry=0x7f97182c8280, msgprefix=0x7f97240040f8 "process exited while connecting to monitor") at qemu/qemu_process.c:1696
        logmsg = 0x0
        __FUNCTION__ = "qemuProcessReportLogError"
#7  0x00007f9723f7d6a8 in qemuProcessWaitForMonitor (driver=driver@entry=0x7f971819ef40, vm=vm@entry=0x7f9718220350, asyncJob=asyncJob@entry=6, qemuCaps=0x7f97182d36c0, logCtxt=logCtxt@entry=0x7f97182c8280)
    at qemu/qemu_process.c:1957
        ret = <optimized out>
        info = 0x0
        priv = <optimized out>
        __func__ = "qemuProcessWaitForMonitor"
#8  0x00007f9723f818cf in qemuProcessLaunch (conn=conn@entry=0x7f97140014b0, driver=driver@entry=0x7f971819ef40, vm=vm@entry=0x7f9718220350, asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_START,
    incoming=incoming@entry=0x0, snapshot=snapshot@entry=0x0, vmop=vmop@entry=VIR_NETDEV_VPORT_PROFILE_OP_CREATE, flags=flags@entry=1) at qemu/qemu_process.c:4904
        ret = <optimized out>
        rv = 0
        logfile = 29
        logCtxt = 0x7f97182c8280
        priv = 0x7f97182e5d20
        cmd = 0x7f97182dbc00
        hookData = {conn = 0x7f97140014b0, vm = 0x7f9718220350, driver = 0x7f971819ef40, cfg = 0x7f97181517b0}
        i = <optimized out>
        nodeset = 0x0
        cfg = 0x7f97181517b0
        caps = 0x7f9718209a40
        hostdev_flags = <optimized out>
        nnicindexes = 1
        nicindexes = 0x7f9718018cb0
        __func__ = "qemuProcessLaunch"
        __FUNCTION__ = "qemuProcessLaunch"
#9  0x00007f9723f84f30 in qemuProcessStart (conn=conn@entry=0x7f97140014b0, driver=driver@entry=0x7f971819ef40, vm=vm@entry=0x7f9718220350, asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_START,
    migrateFrom=migrateFrom@entry=0x0, migrateFd=migrateFd@entry=-1, migratePath=migratePath@entry=0x0, snapshot=snapshot@entry=0x0, vmop=vmop@entry=VIR_NETDEV_VPORT_PROFILE_OP_CREATE, flags=flags@entry=1)
    at qemu/qemu_process.c:5101
---Type <return> to continue, or q <return> to quit---
        priv = 0x7f97182e5d20
        incoming = 0x0
        stopFlags = <optimized out>
        relabel = false
        ret = -1
        rv = <optimized out>
        __func__ = "qemuProcessStart"
        __FUNCTION__ = "qemuProcessStart"
#10 0x00007f9723fe0cd8 in qemuDomainObjStart (conn=0x7f97140014b0, driver=driver@entry=0x7f971819ef40, vm=0x7f9718220350, flags=flags@entry=0, asyncJob=QEMU_ASYNC_JOB_START) at qemu/qemu_driver.c:7384
        ret = <optimized out>
        managed_save = 0x7f9718000be0 "/var/lib/libvirt/qemu/save/rhel7.0-rhel.save"
        start_paused = false
        autodestroy = false
        bypass_cache = false
        force_boot = false
        start_flags = 1
#11 0x00007f9723fe1416 in qemuDomainCreateWithFlags (dom=0x7f9718000ba0, flags=0) at qemu/qemu_driver.c:7438
        driver = 0x7f971819ef40
        vm = 0x7f9718220350
        ret = -1
        __FUNCTION__ = "qemuDomainCreateWithFlags"
#12 0x00007f973cf0680c in virDomainCreate (domain=domain@entry=0x7f9718000ba0) at libvirt-domain.c:6753
        ret = <optimized out>
        conn = <optimized out>
        __func__ = "virDomainCreate"
        __FUNCTION__ = "virDomainCreate"
#13 0x00007f973db715fb in remoteDispatchDomainCreate (server=0x7f973eb4ce30, msg=0x7f973eb65670, args=<optimized out>, rerr=0x7f972cf69c30, client=0x7f973eb656e0) at remote_dispatch.h:3613
        dom = 0x7f9718000ba0
        priv = <optimized out>
#14 remoteDispatchDomainCreateHelper (server=0x7f973eb4ce30, client=0x7f973eb656e0, msg=0x7f973eb65670, rerr=0x7f972cf69c30, args=<optimized out>, ret=0x7f9718267520) at remote_dispatch.h:3589
        rv = 1052137184
        __func__ = "remoteDispatchDomainCreateHelper"
#15 0x00007f973cf6f702 in virNetServerProgramDispatchCall (msg=0x7f973eb65670, client=0x7f973eb656e0, server=0x7f973eb4ce30, prog=0x7f973eb61390) at rpc/virnetserverprogram.c:437
        ret = 0x7f9718267520 ""
        rv = -1
        i = <optimized out>
        identity = 0x7f9710001ba0
        arg = 0x7f9718229840 "@u&\030\227\177"
        dispatcher = 0x7f973dda23b0 <remoteProcs+432>
        rerr = {code = 0, domain = 0, message = 0x0, level = 0, dom = 0x0, str1 = 0x0, str2 = 0x0, str3 = 0x0, int1 = 0, int2 = 0, net = 0x0}
#16 virNetServerProgramDispatch (prog=0x7f973eb61390, server=server@entry=0x7f973eb4ce30, client=0x7f973eb656e0, msg=0x7f973eb65670) at rpc/virnetserverprogram.c:307
        rerr = {code = 0, domain = 0, message = 0x0, level = 0, dom = 0x0, str1 = 0x0, str2 = 0x0, str3 = 0x0, int1 = 0, int2 = 0, net = 0x0}
        __func__ = "virNetServerProgramDispatch"
        __FUNCTION__ = "virNetServerProgramDispatch"
#17 0x00007f973cf6a97d in virNetServerProcessMsg (msg=<optimized out>, prog=<optimized out>, client=<optimized out>, srv=0x7f973eb4ce30) at rpc/virnetserver.c:135
        ret = -1
#18 virNetServerHandleJob (jobOpaque=<optimized out>, opaque=0x7f973eb4ce30) at rpc/virnetserver.c:156
        srv = 0x7f973eb4ce30
        job = 0x7f973eb402f0
---Type <return> to continue, or q <return> to quit---
        __func__ = "virNetServerHandleJob"
#19 0x00007f973ce64045 in virThreadPoolWorker (opaque=opaque@entry=0x7f973eb2f440) at util/virthreadpool.c:145
        data = 0x0
        pool = 0x7f973eb4cf10
        cond = 0x7f973eb4cf78
        priority = false
        job = 0x7f973eb64b20
#20 0x00007f973ce63568 in virThreadHelper (data=<optimized out>) at util/virthread.c:206
        args = 0x0
        local = {func = 0x7f973ce63ef0 <virThreadPoolWorker>, funcName = 0x7f973d05015b "virNetServerHandleJob", worker = true, opaque = 0x7f973eb2f440}
#21 0x00007f973a25bdc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#22 0x00007f9739f821cd in clone () from /lib64/libc.so.6
No symbol table info available.