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Bug 1243313

Summary: starting a qemu results spice core dump
Product: Red Hat Enterprise Linux 7 Reporter: Xiaoqing Wei <xwei>
Component: spiceAssignee: Default Assignee for SPICE Bugs <rh-spice-bugs>
Status: CLOSED DUPLICATE QA Contact: SPICE QE bug list <spice-qe-bugs>
Severity: high Docs Contact:
Priority: high    
Version: 7.2CC: juzhang, knoel, kraxel, marcandre.lureau, qzhang, victortoso, virt-maint
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: All   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-07-16 15:39:55 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Xiaoqing Wei 2015-07-15 07:55:10 UTC 
Description of problem:
starting a qemu results spice core dump

Version-Release number of selected component (if applicable):

qemu-kvm-rhev-2.3.0-10.el7.x86_64
spice-server-0.12.4-12.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. start a pre-defined vm, xml would be pasted in a separated comment later

2015-07-15 07:31:33.816+0000: starting up libvirt version: 1.2.17, package: 2.el7 (Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>, 2015-07-10-07:33:51, x86-035.build.eng.bos.redhat.com), qemu version: 2.3.0 (qemu-kvm-rhev-2.3.0-10.el7)
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name win2k12 -S -machine pc-i440fx-rhel7.2.0,accel=kvm,usb=off,vmport=off -cpu Opteron_G5,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff -m 2048 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 5ace6117-a351-41ba-a91f-a5ba657a59cf -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win2k12.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot menu=on,strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 -device ahci,id=sata0,bus=pci.0,addr=0x7 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64-virtio.qcow2,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64/autounattend.iso,if=none,media=cdrom,id=drive-sata0-0-1,readonly=on,format=raw -device ide-cd,bus=sata0.1,drive=drive-sata0-0-1,id=sata0-0-1 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/ISO/Win2012/en_windows_server_2012_x64_dvd_915478.iso,if=none,id=drive-scsi0-0-0-0,readonly=on,format=raw,cache=none -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -netdev tap,fd=23,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:6e:24:0d,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -vnc 0.0.0.0:0 -device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0xa -msg timestamp=on
char device redirected to /dev/pts/2 (label charserial0)



2.
3.

Actual results:
((null):21283): Spice-ERROR **: reds.c:4015:do_spice_init: statistics shm_open failed, Permission denied


Expected results:

vm started and work well

Additional info:

this happens whatever VM xml has spice or not
eg:
spice + qxl
vnc + VGA
Comment 1 Xiaoqing Wei 2015-07-15 07:56:29 UTC 
log for this qemu instance, from libvirt

char device redirected to /dev/pts/2 (label charserial0)
((null):21283): Spice-ERROR **: reds.c:4015:do_spice_init: statistics shm_open failed, Permission denied
Thread 5 (Thread 0x7efe312cf700 (LWP 21284)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007efe3fc41d02 in _L_lock_791 () from /lib64/libpthread.so.0
#2  0x00007efe3fc41c08 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x7efe4183f180 <qemu_global_mutex>) at pthread_mutex_lock.c:64
#3  0x00007efe41394439 in qemu_mutex_lock (mutex=mutex@entry=0x7efe4183f180 <qemu_global_mutex>) at util/qemu-thread-posix.c:73
#4  0x00007efe41150b9c in qemu_mutex_lock_iothread () at /usr/src/debug/qemu-2.3.0/cpus.c:1123
#5  0x00007efe413a2abe in call_rcu_thread (opaque=<optimized out>) at util/rcu.c:241
#6  0x00007efe3fc3fdc5 in start_thread (arg=0x7efe312cf700) at pthread_create.c:308
#7  0x00007efe397ce1bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 4 (Thread 0x7efe308b7700 (LWP 21286)):
#0  sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:101
#1  0x00007efe41394667 in qemu_sem_timedwait (sem=sem@entry=0x7efe433806e8, ms=ms@entry=10000) at util/qemu-thread-posix.c:254
#2  0x00007efe4131879c in worker_thread (opaque=0x7efe43380680) at thread-pool.c:92
#3  0x00007efe3fc3fdc5 in start_thread (arg=0x7efe308b7700) at pthread_create.c:308
#4  0x00007efe397ce1bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 3 (Thread 0x7efe300b6700 (LWP 21287)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efe41394519 in qemu_cond_wait (cond=<optimized out>, mutex=mutex@entry=0x7efe4183f180 <qemu_global_mutex>) at util/qemu-thread-posix.c:132
#2  0x00007efe4114f7ab in qemu_kvm_wait_io_event (cpu=<optimized out>) at /usr/src/debug/qemu-2.3.0/cpus.c:915
#3  qemu_kvm_cpu_thread_fn (arg=0x7efe43b4e000) at /usr/src/debug/qemu-2.3.0/cpus.c:952
#4  0x00007efe3fc3fdc5 in start_thread (arg=0x7efe300b6700) at pthread_create.c:308
#5  0x00007efe397ce1bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 2 (Thread 0x7efe2f8b5700 (LWP 21288)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efe41394519 in qemu_cond_wait (cond=<optimized out>, mutex=mutex@entry=0x7efe4183f180 <qemu_global_mutex>) at util/qemu-thread-posix.c:132
#2  0x00007efe4114f7ab in qemu_kvm_wait_io_event (cpu=<optimized out>) at /usr/src/debug/qemu-2.3.0/cpus.c:915
#3  qemu_kvm_cpu_thread_fn (arg=0x7efe43bba000) at /usr/src/debug/qemu-2.3.0/cpus.c:952
#4  0x00007efe3fc3fdc5 in start_thread (arg=0x7efe2f8b5700) at pthread_create.c:308
#5  0x00007efe397ce1bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 1 (Thread 0x7efe41027c40 (LWP 21283)):
#0  0x00007efe3fc4622d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007efe3a747911 in read (__nbytes=255, __buf=0x7ffe7df580f0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  spice_backtrace_gstack () at backtrace.c:100
#3  0x00007efe3a747a59 in spice_backtrace () at backtrace.c:131
#4  0x00007efe3a74f207 in spice_logv (log_domain=0x7efe3a7c57c6 "Spice", log_level=SPICE_LOG_LEVEL_ERROR, strloc=0x7efe3a7d0cf6 "reds.c:4015", function=0x7efe3a7d2eb0 <__FUNCTION__.31803> "do_spice_init", format=0x7efe3a7d2018 "statistics shm_open failed, %s", args=args@entry=0x7ffe7df58280) at log.c:108
#5  0x00007efe3a74f365 in spice_log (log_domain=log_domain@entry=0x7efe3a7c57c6 "Spice", log_level=log_level@entry=SPICE_LOG_LEVEL_ERROR, strloc=strloc@entry=0x7efe3a7d0cf6 "reds.c:4015", function=function@entry=0x7efe3a7d2eb0 <__FUNCTION__.31803> "do_spice_init", format=format@entry=0x7efe3a7d2018 "statistics shm_open failed, %s") at log.c:123
#6  0x00007efe3a734d84 in do_spice_init (core_interface=0x7efe417d03a0 <core_interface>) at reds.c:4015
#7  spice_server_init (s=<optimized out>, core=core@entry=0x7efe417d03a0 <core_interface>) at reds.c:4089
#8  0x00007efe412febf8 in qemu_spice_add_interface (sin=sin@entry=0x7efe43306218) at ui/spice-core.c:849
#9  0x00007efe41212c87 in vmc_register_interface (scd=0x7efe43306210) at spice-qemu-char.c:122
#10 0x00007efe4120ff87 in qemu_chr_fe_set_open (fe_open=1, chr=0x7efe43372880) at qemu-char.c:3784
#11 qemu_chr_add_handlers (s=0x7efe43372880, fd_can_read=fd_can_read@entry=0x7efe412cc240 <usbredir_chardev_can_read>, fd_read=fd_read@entry=0x7efe412cd380 <usbredir_chardev_read>, fd_event=fd_event@entry=0x7efe412cd300 <usbredir_chardev_event>, opaque=opaque@entry=0x7efe45b36000) at qemu-char.c:371
#12 0x00007efe412cae52 in usbredir_realize (udev=0x7efe45b36000, errp=<optimized out>) at hw/usb/redirect.c:1399
#13 0x00007efe412b57c6 in usb_device_realize (errp=0x7ffe7df583f0, dev=0x7efe45b36000) at hw/usb/bus.c:121
#14 usb_qdev_realize (qdev=0x7efe45b36000, errp=0x7ffe7df58430) at hw/usb/bus.c:258
#15 0x00007efe4125cb5d in device_set_realized (obj=0x7efe45b36000, value=<optimized out>, errp=0x7ffe7df58568) at hw/core/qdev.c:1058
#16 0x00007efe412ea29e in property_set_bool (obj=0x7efe45b36000, v=<optimized out>, opaque=0x7efe454fe680, name=<optimized out>, errp=0x7ffe7df58568) at qom/object.c:1514
#17 0x00007efe412ece27 in object_property_set_qobject (obj=obj@entry=0x7efe45b36000, value=value@entry=0x7efe44faf880, name=name@entry=0x7efe413d40dd "realized", errp=errp@entry=0x7ffe7df58568) at qom/qom-qobject.c:24
#18 0x00007efe412eb8b0 in object_property_set_bool (obj=obj@entry=0x7efe45b36000, value=value@entry=true, name=name@entry=0x7efe413d40dd "realized", errp=errp@entry=0x7ffe7df58568) at qom/object.c:905
#19 0x00007efe4120aac4 in qdev_device_add (opts=0x7efe43304b90) at qdev-monitor.c:574
#20 0x00007efe41213fc9 in device_init_func (opts=<optimized out>, opaque=<optimized out>) at vl.c:2139
#21 0x00007efe413a0deb in qemu_opts_foreach (list=<optimized out>, func=func@entry=0x7efe41213fc0 <device_init_func>, opaque=opaque@entry=0x0, abort_on_failure=abort_on_failure@entry=1) at util/qemu-option.c:1059
#22 0x00007efe411250b0 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4254
2015-07-15 07:31:35.824+0000: shutting down
Comment 2 Xiaoqing Wei 2015-07-15 07:58:01 UTC 
this is the VM xml with vnc + VGA (uses spicevmc, though)

# virsh dumpxml win2k12 
<domain type='kvm'>
  <name>win2k12</name>
  <uuid>5ace6117-a351-41ba-a91f-a5ba657a59cf</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.2.0'>hvm</type>
    <bootmenu enable='yes'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
    <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
    </hyperv>
    <vmport state='off'/>
  </features>
  <cpu mode='custom' match='exact'>
    <model fallback='allow'>Opteron_G5</model>
  </cpu>
  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64-virtio.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <boot order='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64/autounattend.iso'/>
      <target dev='sdb' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/ISO/Win2012/en_windows_server_2012_x64_dvd_915478.iso'/>
      <target dev='sda' bus='scsi'/>
      <readonly/>
      <boot order='1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x2'/>
    </controller>
    <controller type='scsi' index='0' model='virtio-scsi'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:6e:24:0d'/>
      <source bridge='switch'/>
      <model type='rtl8139'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <sound model='ich6'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </sound>
    <video>
      <model type='vga' vram='16384' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </memballoon>
  </devices>
</domain>
Comment 3 Xiaoqing Wei 2015-07-15 07:59:52 UTC 
this is the vm using spice + qxl

virsh start win2k12


2015-07-15 07:58:32.364+0000: starting up libvirt version: 1.2.17, package: 2.el7 (Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>, 2015-07-10-07:33:51, x86-035.build.eng.bos.redhat.com), qemu version: 2.3.0 (qemu-kvm-rhev-2.3.0-10.el7)
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qemu-kvm -name win2k12 -S -machine pc-i440fx-rhel7.2.0,accel=kvm,usb=off,vmport=off -cpu Opteron_G5,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff -m 2048 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 5ace6117-a351-41ba-a91f-a5ba657a59cf -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win2k12.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot menu=on,strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 -device ahci,id=sata0,bus=pci.0,addr=0x7 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64-virtio.qcow2,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64/autounattend.iso,if=none,media=cdrom,id=drive-sata0-0-1,readonly=on,format=raw -device ide-cd,bus=sata0.1,drive=drive-sata0-0-1,id=sata0-0-1 -drive file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/ISO/Win2012/en_windows_server_2012_x64_dvd_915478.iso,if=none,id=drive-scsi0-0-0-0,readonly=on,format=raw,cache=none -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -netdev tap,fd=23,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:6e:24:0d,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=0.0.0.0,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0xa -msg timestamp=on
char device redirected to /dev/pts/2 (label charserial0)
((null):21552): Spice-ERROR **: reds.c:4015:do_spice_init: statistics shm_open failed, Permission denied
Thread 2 (Thread 0x7f4d2349f700 (LWP 21553)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f4d31e11d02 in _L_lock_791 () from /lib64/libpthread.so.0
#2  0x00007f4d31e11c08 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x7f4d33a0f180 <qemu_global_mutex>) at pthread_mutex_lock.c:64
#3  0x00007f4d33564439 in qemu_mutex_lock (mutex=mutex@entry=0x7f4d33a0f180 <qemu_global_mutex>) at util/qemu-thread-posix.c:73
#4  0x00007f4d33320b9c in qemu_mutex_lock_iothread () at /usr/src/debug/qemu-2.3.0/cpus.c:1123
#5  0x00007f4d33572b46 in call_rcu_thread (opaque=<optimized out>) at util/rcu.c:241
#6  0x00007f4d31e0fdc5 in start_thread (arg=0x7f4d2349f700) at pthread_create.c:308
#7  0x00007f4d2b99e1bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 1 (Thread 0x7f4d331f8c40 (LWP 21552)):
#0  0x00007f4d31e1622d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4d2c917911 in read (__nbytes=255, __buf=0x7ffdec4d20f0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  spice_backtrace_gstack () at backtrace.c:100
#3  0x00007f4d2c917a59 in spice_backtrace () at backtrace.c:131
#4  0x00007f4d2c91f207 in spice_logv (log_domain=0x7f4d2c9957c6 "Spice", log_level=SPICE_LOG_LEVEL_ERROR, strloc=0x7f4d2c9a0cf6 "reds.c:4015", function=0x7f4d2c9a2eb0 <__FUNCTION__.31803> "do_spice_init", format=0x7f4d2c9a2018 "statistics shm_open failed, %s", args=args@entry=0x7ffdec4d2280) at log.c:108
#5  0x00007f4d2c91f365 in spice_log (log_domain=log_domain@entry=0x7f4d2c9957c6 "Spice", log_level=log_level@entry=SPICE_LOG_LEVEL_ERROR, strloc=strloc@entry=0x7f4d2c9a0cf6 "reds.c:4015", function=function@entry=0x7f4d2c9a2eb0 <__FUNCTION__.31803> "do_spice_init", format=format@entry=0x7f4d2c9a2018 "statistics shm_open failed, %s") at log.c:123
#6  0x00007f4d2c904d84 in do_spice_init (core_interface=0x7f4d339a03a0 <core_interface>) at reds.c:4015
#7  spice_server_init (s=<optimized out>, core=core@entry=0x7f4d339a03a0 <core_interface>) at reds.c:4089
#8  0x00007f4d334cf0b4 in qemu_spice_init () at ui/spice-core.c:807
#9  0x00007f4d332f4de5 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4125
2015-07-15 07:58:34.007+0000: shutting down
Comment 4 Xiaoqing Wei 2015-07-15 08:00:56 UTC 
vm xml for spice + qxl(also uses spicevmc)

# virsh dumpxml win2k12 
<domain type='kvm'>
  <name>win2k12</name>
  <uuid>5ace6117-a351-41ba-a91f-a5ba657a59cf</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.2.0'>hvm</type>
    <bootmenu enable='yes'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
    <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
    </hyperv>
    <vmport state='off'/>
  </features>
  <cpu mode='custom' match='exact'>
    <model fallback='allow'>Opteron_G5</model>
  </cpu>
  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64-virtio.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <boot order='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/win2012-64/autounattend.iso'/>
      <target dev='sdb' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/isos/ISO/Win2012/en_windows_server_2012_x64_dvd_915478.iso'/>
      <target dev='sda' bus='scsi'/>
      <readonly/>
      <boot order='1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x2'/>
    </controller>
    <controller type='scsi' index='0' model='virtio-scsi'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:6e:24:0d'/>
      <source bridge='switch'/>
      <model type='rtl8139'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='spice' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <sound model='ich6'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </sound>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </memballoon>
  </devices>
</domain>
Comment 6 Gerd Hoffmann 2015-07-15 11:04:50 UTC 
> Actual results:
> ((null):21283): Spice-ERROR **: reds.c:4015:do_spice_init: statistics
> shm_open failed, Permission denied

Stale /dev/shm/spice.* from another user hanging around?
selinux denying access?

In any case this should not be a fatal error, the statistics are not essential, needs fixing in spice.
Comment 7 Xiaoqing Wei 2015-07-16 02:54:38 UTC 
(In reply to Gerd Hoffmann from comment #6)
> > Actual results:
> > ((null):21283): Spice-ERROR **: reds.c:4015:do_spice_init: statistics
> > shm_open failed, Permission denied
> 
> Stale /dev/shm/spice.* from another user hanging around?

# ls -l /dev/shm/
total 0

no, this was the only vm trying to start


> selinux denying access?

# getenforce 
Disabled


> 
> In any case this should not be a fatal error, the statistics are not
> essential, needs fixing in spice.


Ah, my fault, I was want to file this bug against spice-server when checking this file 

/usr/src/debug/spice-0.12.4/server/reds.c
4014     if ((fd = shm_open(reds->stat_shm_name, O_CREAT | O_RDWR, 0444)) == -1) {
4015         spice_error("statistics shm_open failed, %s", strerror(errno));
4016     }


but I just use the bookmarked url in firefox and didn't change the component ;)
Comment 8 Victor Toso 2015-07-16 15:39:55 UTC 
Looks like this is a duplicate of #1177326 which has upstream patch in spice
http://lists.freedesktop.org/archives/spice-devel/2015-July/020863.html

*** This bug has been marked as a duplicate of bug 1177326 ***