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Description of problem: I try to do internal migration, guests use spice, but segfault always occur during migration. Version-Release number of selected component (if applicable): # rpm -qa |grep qemu qemu-kvm-0.12.1.2-2.147.el6.x86_64 qemu-img-0.12.1.2-2.147.el6.x86_64 qemu-kvm-tools-0.12.1.2-2.147.el6.x86_64 gpxe-roms-qemu-0.9.7-6.4.el6.noarch qemu-kvm-debuginfo-0.12.1.2-2.147.el6.x86_64 # rpm -qa |grep spice spice-server-0.7.2-4.el6.x86_64 spice-server-debuginfo-0.7.2-4.el6.x86_64 How reproducible: always Steps to Reproduce: 1. boot up src and dest vm (using spice) 2. do internal migration Actual results: segfualt occurred. Expected results: internal migration completed. Additional info: 1. qemu cmdline: # qemu-kvm -name vm1 -chardev socket,id=human_monitor_id_20110223-085318-bfFr,path=/tmp/monitor-humanmonitor1-20110223-085318-bfFr,server,nowait -mon chardev=human_monitor_id_20110223-085318-bfFr,mode=readline -chardev socket,id=serial_id_20110223-085318-bfFr,path=/tmp/serial-20110223-085318-bfFr,server,nowait -device isa-serial,chardev=serial_id_20110223-085318-bfFr -drive file=/home/devel/autotest-devel/client/tests/kvm/images/RHEL-Server-6.0-64-virtio.qcow2,index=0,if=none,id=drive-virtio-disk1,media=disk,cache=none,format=qcow2,aio=native -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk1,id=virtio-disk1 -device virtio-net-pci,netdev=idi86uSe,mac=9a:3e:14:01:86:56,netdev=idi86uSe,id=ndev00idi86uSe,bus=pci.0,addr=0x3 -netdev tap,id=idi86uSe,vhost=on,ifname=t0-085318-bfFr,script=/home/devel/autotest-devel/client/tests/kvm/scripts/qemu-ifup-switch,downscript=no -m 1024 -smp 2,cores=1,threads=1,sockets=2 -cpu cpu64-rhel6,+sse2,+x2apic -spice port=8001,disable-ticketing -vga qxl -rtc base=utc,clock=host,driftfix=none -boot order=cdn,once=c,menu=off -usbdevice tablet -no-kvm-pit-reinjection -enable-kvm -incoming tcp:0:5200 2. CoreTrace: Program terminated with signal 11, Segmentation fault. #0 reds_mig_switch (s=<value optimized out>) at reds.c:3379 3379 migrate.port = s->port; (gdb) bt #0 reds_mig_switch (s=<value optimized out>) at reds.c:3379 #1 spice_server_migrate_switch (s=<value optimized out>) at reds.c:4184 #2 0x00000000004df239 in notifier_list_notify (list=<value optimized out>) at notify.c:37 #3 0x00000000004b9472 in buffered_put_buffer (opaque=0x23a40f0, buf=0x0, pos=0, size=0) at buffered_file.c:163 #4 0x000000000040bb56 in main_loop_wait (timeout=1000) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4429 #5 0x000000000042b2fa in kvm_main_loop () at /usr/src/debug/qemu-kvm-0.12.1.2/qemu-kvm.c:2165 #6 0x000000000040ef0f in main_loop (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4634 #7 main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:6848 (gdb) info threads 5 Thread 0x7f078339e700 (LWP 32315) 0x00000037c9a33add in do_sigtimedwait (set=<value optimized out>, info=0x7f078339da20, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:56 4 Thread 0x7f0783da3700 (LWP 32314) 0x00000037c9a33add in do_sigtimedwait (set=<value optimized out>, info=0x7f0783da2a20, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:56 3 Thread 0x7f0780c00700 (LWP 32414) pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216 2 Thread 0x7f0781601700 (LWP 32321) 0x00000037c9ae63c3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:82 * 1 Thread 0x7f078a9dd940 (LWP 32302) reds_mig_switch (s=<value optimized out>) at reds.c:3379 (gdb) bt full #0 reds_mig_switch (s=<value optimized out>) at reds.c:3379 s = 0x0 migrate = {port = 0, sport = 0, host_size = 0, host_data = 0x4b973a "\205\300u:H\307C(", cert_subject_size = 1, cert_subject_data = 0x2372ce0 "ЗK"} item = 0x23d6fd0 #1 spice_server_migrate_switch (s=<value optimized out>) at reds.c:4184 __FUNCTION__ = "spice_server_migrate_switch" #2 0x00000000004df239 in notifier_list_notify (list=<value optimized out>) at notify.c:37 notifier = <value optimized out> next = 0x0 #3 0x00000000004b9472 in buffered_put_buffer (opaque=0x23a40f0, buf=0x0, pos=0, size=0) at buffered_file.c:163 s = 0x23a40f0 offset = 0 ret = <value optimized out> #4 0x000000000040bb56 in main_loop_wait (timeout=1000) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4429 pioh = <value optimized out> ioh = 0x2259dd0 rfds = {fds_bits = {562949953421312, 0 <repeats 15 times>}} wfds = {fds_bits = {288230376151711744, 0 <repeats 15 times>}} xfds = {fds_bits = {0 <repeats 16 times>}} ret = 2 nfds = <value optimized out> tv = {tv_sec = 0, tv_usec = 999986} #5 0x000000000042b2fa in kvm_main_loop () at /usr/src/debug/qemu-kvm-0.12.1.2/qemu-kvm.c:2165 fds = {47, 48} mask = {__val = {268443712, 0 <repeats 15 times>}} sigfd = <value optimized out> #6 0x000000000040ef0f in main_loop (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4634 r = <value optimized out> #7 main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:6848 gdbstub_dev = 0x0 i = <value optimized out> snapshot = 0 linux_boot = 0 initrd_filename = 0x0 kernel_filename = 0x0 kernel_cmdline = 0x63bd42 "" boot_devices = "c\000n", '\000' <repeats 29 times> ds = <value optimized out> dcl = <value optimized out> cyls = 0 heads = 0 secs = 0 translation = 0 hda_opts = <value optimized out> opts = <value optimized out> olist = <value optimized out> optind = 37 optarg = 0x0 loadvm = 0x0 ---Type <return> to continue, or q <return> to quit--- machine = <value optimized out> cpu_model = 0x7fffc3d70bfd "cpu64-rhel6,+sse2,+x2apic" fds = {269549568, 134219936} tb_size = 0 pid_file = 0x0 incoming = 0x0 fd = 0 pwd = 0x0 chroot_dir = 0x0 run_as = 0x0 env = <value optimized out> show_vnc_port = <value optimized out> defconfig = <value optimized out> defconfig_verbose = <value optimized out>