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Yes, judging by the backtrace this seems to be the same issue. I'm not 100% sure though, but we can always re-open the bug if needed.
CongLi, can you please add a comment to bug 869586 describing how you triggered this issue?
*** This bug has been marked as a duplicate of bug 869586 ***
Description of problem: Core dump when quitting Version-Release number of selected component (if applicable): kernel-2.6.32-358.6.1.el6.x86_64 qemu-kvm-0.12.1.2-2.355.el6_4.3.x86_64 How reproducible: 1/1 Steps to Reproduce: 1. CML: /root/autotest/autotest-devel/client/tests/kvm/qemu -S -name 'vm1' -nodefaults -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20130417-023721-qLPVffAl,server,nowait -mon chardev=qmp_id_qmpmonitor1,mode=control -chardev socket,id=serial_id_serial1,path=/tmp/serial-serial1-20130417-023721-qLPVffAl,server,nowait -device isa-serial,chardev=serial_id_serial1 -chardev socket,id=seabioslog_id_20130417-023721-qLPVffAl,path=/tmp/seabios-20130417-023721-qLPVffAl,server,nowait -device isa-debugcon,chardev=seabioslog_id_20130417-023721-qLPVffAl,iobase=0x402 -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=0x4 -drive file='/root/autotest/autotest-devel/client/tests/kvm/images/win2008r2-64-virtio.qcow2',if=none,id=drive-virtio-disk1,media=disk,cache=none,boot=off,snapshot=off,format=qcow2,aio=native -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -device virtio-net-pci,netdev=idrBVLWX,mac=9a:88:89:8a:8b:8c,bus=pci.0,addr=0x3,id='idSDN2f3' -netdev tap,id=idrBVLWX,vhost=on,fd=22 -m 32768 -smp 16,maxcpus=16,cores=4,threads=2,sockets=2 -cpu 'Opteron_G4',hv_relaxed -M rhel6.4.0 -drive file='/root/autotest/autotest-devel/client/tests/kvm/isos/windows/winutils.iso',if=none,id=drive-ide0-0-0,media=cdrom,snapshot=off,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 -vnc :1 -vga std -rtc base=localtime,clock=host,driftfix=slew -boot order=cdn,once=c,menu=off -enable-kvm 2. 3. Actual results: core dump Expected results: qemu works well & no core dump happen Additional info: 1. (gdb) bt #0 qemu_bh_delete (bh=0x643122203a226469) at /usr/src/debug/qemu-kvm-0.12.1.2/async.c:118 #1 0x00007f6f1cf62dbf in virtio_blk_dma_restart_bh (opaque=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio-blk.c:465 #2 0x00007f6f1cf85031 in qemu_bh_poll () at /usr/src/debug/qemu-kvm-0.12.1.2/async.c:70 #3 0x00007f6f1cf4e419 in main_loop_wait (timeout=1000) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4017 #4 0x00007f6f1cf7098a in kvm_main_loop () at /usr/src/debug/qemu-kvm-0.12.1.2/qemu-kvm.c:2244 #5 0x00007f6f1cf51018 in main_loop (argc=50, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4187 #6 main (argc=50, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:6526 (gdb) 2. CpuInfo processor : 31 vendor_id : AuthenticAMD cpu family : 21 model : 1 model name : AMD Opteron(TM) Processor 6272 stepping : 2 cpu MHz : 2100.129 cache size : 2048 KB physical id : 1 siblings : 16 core id : 7 cpu cores : 8 apicid : 79 initial apicid : 47 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nonstop_tsc extd_apicid amd_dcm aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 popcnt aes xsave avx lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 nodeid_msr topoext perfctr_core cpb npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bogomips : 4199.76 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb