same test, but core dump shows us differents things.
p item after the segfault tells no symbol item in current context
Nicolas
(/usr/local/bin/qemu:6512): SpiceWorker-ERROR **:
../spice-common/common/ring.h:84:ring_remove: assertion `item->next !=
NULL && item->prev != NULL' failed
Aborted (core dumped)
(gdb) thread apply all bt
Thread 4 (LWP 6512):
#0 0x00007f625c921033 in select () from /lib/libc.so.6
#1 0x00007f625f63b9d8 in os_host_main_loop_wait (timeout=4294967295)
at main-loop.c:308
#2 main_loop_wait (nonblocking=<optimized out>) at main-loop.c:496
#3 0x00007f625f63afa2 in main_loop () at
/tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/vl.c:1643
#4 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized
out>) at /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/vl.c:3755
Thread 3 (LWP 6637):
#0 0x00007f625c920327 in ioctl () from /lib/libc.so.6
#1 0x00007f625f6e3c26 in kvm_vcpu_ioctl (env=<optimized out>,
type=44672) at /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/kvm-all.c:1648
#2 0x00007f625f6e48e7 in kvm_cpu_exec (env=0x7f6260f06b20) at
/tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/kvm-all.c:1535
#3 0x00007f625f6a2167 in qemu_kvm_cpu_thread_fn (arg=<optimized out>)
at /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/cpus.c:757
#4 0x00007f625cbd698c in ?? () from /lib/libpthread.so.0
#5 0x00007f625c926fcd in clone () from /lib/libc.so.6
Thread 2 (LWP 21713):
#0 0x00007f625cbdb27b in pthread_cond_timedwait () from /lib/libpthread.so.0
#1 0x00007f625f64a29a in cond_timedwait (ts=<optimized out>,
mutex=<optimized out>, cond=<optimized out>) at posix-aio-compat.c:107
#2 aio_thread (unused=<optimized out>) at posix-aio-compat.c:337
#3 0x00007f625cbd698c in ?? () from /lib/libpthread.so.0
#4 0x00007f625c926fcd in clone () from /lib/libc.so.6
Thread 1 (LWP 6638):
#0 0x00007f625c886c85 in raise () from /lib/libc.so.6
#1 0x00007f625c887e64 in abort () from /lib/libc.so.6
#2 0x00007f625d2e4557 in spice_logv (log_domain=0x7f625d35d2dc
"SpiceWorker", log_level=SPICE_LOG_LEVEL_ERROR,
strloc=0x7f625d358160 "../spice-common/common/ring.h:84",
function=0x7f625d35f413 "ring_remove",
format=0x7f625d3583c8 "assertion `%s' failed", args=<optimized
out>) at log.c:109
#3 0x00007f625d2e45f4 in spice_log (log_domain=0x1970
<Address 0x1970 out of bounds>, log_level=6638, strloc=0x6 <Address
0x6 out of bounds>,
function=0xffffffffffffffff <Address 0xffffffffffffffff
out of bounds>, format=0x7f623d9d0700 "") at log.c:123
#4 0x00007f625d2b8f75 in ring_remove (item=<optimized
out>) at ../spice-common/common/ring.h:84
#5 current_remove_container (container=<optimized out>,
worker=<optimized out>) at red_worker.c:1818
#6 container_cleanup (container=<optimized out>,
worker=<optimized out>) at red_worker.c:1834
#7 red_update_area (worker=0x7f62611248b0,
area=<optimized out>, surface_id=<optimized out>) at red_worker.c:4634
#8 0x00007f625d2b972f in surface_flush (worker=0x1970,
surface_id=0, rect=0x19ee) at red_worker.c:1859
#9 0x00007f625d2c1b4c in
red_handle_depends_on_target_surface (surface_id=<optimized out>,
worker=<optimized out>) at red_worker.c:3839
#10 red_process_surface (loadvm=<optimized out>,
group_id=<optimized out>, surface=<optimized out>, worker=<optimized
out>) at red_worker.c:4004
#11 red_process_commands (worker=0x7f62611248b0,
max_pipe_size=<optimized out>, ring_is_empty=0x7f623d9cfccc) at
red_worker.c:4950
#12 0x00007f625d2c2fef in red_worker_main (arg=<optimized
out>) at red_worker.c:11778
#13 0x00007f625cbd698c in ?? () from /lib/libpthread.so.0
#14 0x00007f625c926fcd in clone () from /lib/libc.so.6
2012/9/5 Alon Levy <alevy@xxxxxxxxxx>:
>> Yes it happens with and without -vnc qemu cmdline
>> Nicolas
>> 2012/9/5 Alon Levy <alevy@xxxxxxxxxx>:
>
> Right after the segfault, before "thread apply all bt", can you please run
> p item
> p item->next
> info locals
>
> Thanks,
> Alon
>
>> >> and with all threads :
>> >>
>> >> bego3 ~ # cat /storage/tmp/log6
>> >> warning: Unable to find libthread_db matching inferior's thread
>> >> library, thread debugging will not be available.
>> >> Core was generated by `/usr/local/bin/qemu -name xpvirtser001
>> >> -readconfig /etc/ich9-ehci-uhci.cfg -dev'.
>> >> Program terminated with signal 11, Segmentation fault.
>> >> #0 ring_add (item=<optimized out>, ring=<optimized out>) at
>> >> ../spice-common/common/ring.h:61
>> >> 61 ring->next = item->next->prev = item;
>> >> (gdb) thread apply all bt
>> >>
>> >> Thread 5 (LWP 3065):
>> >> #0 0x00007f9036826033 in select () from /lib/libc.so.6
>> >> #1 0x00007f90395409d8 in os_host_main_loop_wait
>> >> (timeout=4294967295)
>> >> at main-loop.c:308
>> >> #2 main_loop_wait (nonblocking=<optimized out>) at
>> >> main-loop.c:496
>> >> #3 0x00007f903953ffa2 in main_loop () at
>> >> /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/vl.c:1643
>> >> #4 main (argc=<optimized out>, argv=<optimized out>,
>> >> envp=<optimized
>> >> out>) at
>> >> /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/vl.c:3755
>> >>
>> >> Thread 4 (LWP 4885):
>> >> #0 0x00007f9036ae027b in pthread_cond_timedwait () from
>> >> /lib/libpthread.so.0
>> >> #1 0x00007f903954f29a in cond_timedwait (ts=<optimized out>,
>> >> mutex=<optimized out>, cond=<optimized out>) at
>> >> posix-aio-compat.c:107
>> >> #2 aio_thread (unused=<optimized out>) at posix-aio-compat.c:337
>> >> #3 0x00007f9036adb98c in ?? () from /lib/libpthread.so.0
>> >> #4 0x00007f903682bfcd in clone () from /lib/libc.so.6
>> >>
>> >> Thread 3 (LWP 3180):
>> >> #0 0x00007f9036adfefc in pthread_cond_wait () from
>> >> /lib/libpthread.so.0
>> >> #1 0x00007f903956c62a in qemu_cond_wait (cond=0x7f903b6f4114,
>> >> mutex=0x80) at qemu-thread-posix.c:113
>> >> #2 0x00007f903959aac6 in vnc_worker_thread_loop
>> >> (queue=0x7f903b6f4110) at ui/vnc-jobs.c:222
>> >> #3 0x00007f903959af21 in vnc_worker_thread (arg=<optimized out>)
>> >> at
>> >> ui/vnc-jobs.c:318
>> >> #4 0x00007f9036adb98c in ?? () from /lib/libpthread.so.0
>> >> #5 0x00007f903682bfcd in clone () from /lib/libc.so.6
>> >
>> > Does this happen if you run without vnc?
>> >
>> >>
>> >> Thread 2 (LWP 3177):
>> >> #0 0x00007f9036825327 in ioctl () from /lib/libc.so.6
>> >> #1 0x00007f90395e8c26 in kvm_vcpu_ioctl (env=<optimized out>,
>> >> type=44672) at
>> >> /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/kvm-all.c:1648
>> >> #2 0x00007f90395e98e7 in kvm_cpu_exec (env=0x7f903ae0bb20) at
>> >> /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/kvm-all.c:1535
>> >> #3 0x00007f90395a7167 in qemu_kvm_cpu_thread_fn (arg=<optimized
>> >> out>)
>> >> at /tmp/qemu-0b3f79b9e9c17e97d8d8179defdb6e03cd9ddc8f/cpus.c:757
>> >> #4 0x00007f9036adb98c in ?? () from /lib/libpthread.so.0
>> >> #5 0x00007f903682bfcd in clone () from /lib/libc.so.6
>> >>
>> >> Thread 1 (LWP 3178):
>> >> #0 ring_add (item=<optimized out>, ring=<optimized out>) at
>> >> ../spice-common/common/ring.h:61
>> >> #1 ring_add_after (pos=<optimized out>, item=<optimized out>) at
>> >> ../spice-common/common/ring.h:66
>> >> #2 __current_add_drawable (pos=<optimized out>,
>> >> drawable=<optimized
>> >> out>, worker=<optimized out>) at red_worker.c:2351
>> >> #3 red_current_add (worker=0x7f903b0298b0, ring=0x7f9010022ef8,
>> >> drawable=0x7f903b1e91e8) at red_worker.c:3479
>> >> #4 0x00007f90371c5f13 in red_current_add_qxl
>> >> (red_drawable=<optimized
>> >> out>, ring=<optimized out>, worker=<optimized out>,
>> >> drawable=<optimized out>) at red_worker.c:3612
>> >> #5 red_process_drawable (group_id=<optimized out>,
>> >> drawable=<optimized out>, worker=<optimized out>) at
>> >> red_worker.c:3953
>> >> #6 red_process_commands (worker=0x7f903b0298b0,
>> >> max_pipe_size=<optimized out>, ring_is_empty=0x7f90180d5ccc) at
>> >> red_worker.c:4902
>> >> #7 0x00007f90371c7fa5 in red_worker_main (arg=<optimized
>> >> out>)
>> >> at
>> >> red_worker.c:11778
>> >> #8 0x00007f9036adb98c in ?? () from /lib/libpthread.so.0
>> >> #9 0x00007f903682bfcd in clone () from /lib/libc.so.6
>> >
>> > Thanks for the work producing the backtrace, unfortunately I can't
>> > think of anything at the moment. I'd like to see the history of
>> > the ring adds but that's of course impossible. Valgrind would be
>> > awesome, but it requires compiling libssl specifically to avoid a
>> > ton of false warnings from valgrind (even if you don't use the tls
>> > port of spice). See http://www.openssl.org/support/faq.html#PROG14
>> > if you are willing to go this extra mile.
>> >
>> >
>> >>
>> >>
>> >> 2012/9/5 nicolas prochazka <prochazka.nicolas@xxxxxxxxx>:
>> >> > Hello,
>> >> > With the help of Alon, i can produce debug information :
>> >> >
>> >> > Core was generated by `/usr/local/bin/qemu -name xpvirtser001
>> >> > -readconfig /etc/ich9-ehci-uhci.cfg -dev'.
>> >> > Program terminated with signal 11, Segmentation fault.
>> >> > #0 ring_add (item=<optimized out>, ring=<optimized out>) at
>> >> > ../spice-common/common/ring.h:61
>> >> > 61 ring->next = item->next->prev = item;
>> >> >
>> >> >
>> >> > Regards,
>> >> > Nicolas
>> >> >
>> >> > 2012/9/4 Alon Levy <alevy@xxxxxxxxxx>:
>> >> >>> hello
>> >> >>> libspice 0.11.3
>> >> >>> qemu 1.2rc2
>> >> >>>
>> >> >>> In windows XP Guest VM ,
>> >> >>> Change screensaver ( with small preview windows change)
>> >> >>> causes a segfault in libspice server .
>> >> >>>
>> >> >>> I can always reproduce it ,
>> >> >>> two logs juste before segfault.
>> >> >>>
>> >> >>>
>> >> >>> usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (194, 21)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 19
>> >> >>> dependent item found 0x7fdb3a46ae10, 0x7fdb3b132150
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 455) (359,
>> >> >>> 613)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 7: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (5, 0) (199, 158)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 7
>> >> >>> dependent item found 0x7fdb3a46ccb0, 0x7fdb3ac64ce0
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (168, 437) (339,
>> >> >>> 452)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 19: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (3, 3) (174, 18)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 19
>> >> >>> dependent item found 0x7fdb3a46c818, 0x7fdb3ac987e0
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2633:red_display_detach_stream_gracefully: stream
>> >> >>> 49:
>> >> >>> upgrade by screenshot. has current 0. box ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (257, 265) (409,
>> >> >>> 377)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (257, 265) (409,
>> >> >>> 377)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2674:red_detach_streams_behind: stream 49
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:309:async_command_alloc: 0x7fdaa007f4b0
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 7: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (32, 32)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:11443:worker_handle_dispatcher_async_done:
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:960:red_dispatcher_async_complete:
>> >> >>> 0x7fdaa007f4b0:
>> >> >>> cookie 140576964702000
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:962:red_dispatcher_async_complete: no more
>> >> >>> async
>> >> >>> commands
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:309:async_command_alloc: 0x7fdaa00b6f30
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 20: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (16, 16)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:11443:worker_handle_dispatcher_async_done:
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:960:red_dispatcher_async_complete:
>> >> >>> 0x7fdaa00b6f30:
>> >> >>> cookie 140576964474032
>> >> >>> (/usr/local/bin/qemu:11553): Spice-Debug **:
>> >> >>> red_dispatcher.c:962:red_dispatcher_async_complete: no more
>> >> >>> async
>> >> >>> commands
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (472, 596) (547,
>> >> >>> 619)
>> >> >>> (/usr/local/bin/qemu:11553): SpiceWorker-ERROR **:
>> >> >>> ../spice-common/common/ring.h:83:ring_remove: assertion
>> >> >>> `item->next
>> >> >>> !=
>> >> >>> NULL && item->prev != NULL' failed
>> >> >>> Aborted
>> >> >>>
>> >> >>>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 434) (359,
>> >> >>> 455)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 22: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (194, 21)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 22
>> >> >>> dependent item found 0x7f67c1181838, 0x7f6728484650
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (168, 435) (358,
>> >> >>> 454)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 22: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (3, 1) (193, 20)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 22
>> >> >>> dependent item found 0x7f67c117e738, 0x7f672809f6e0
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 8: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (5, 0) (199, 158)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 455) (359,
>> >> >>> 613)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 455) (359,
>> >> >>> 613)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 25: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (194, 158)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 25
>> >> >>> dependent item found 0x7f67c11813a0, 0x7f672806db10
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (341, 435) (358,
>> >> >>> 454)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 22: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (176, 1) (193,
>> >> >>> 20)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 22
>> >> >>> dependent item found 0x7f67c117e118, 0x7f67280ab110
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 434) (359,
>> >> >>> 455)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 10: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (0, 0) (194, 21)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 10
>> >> >>> dependent item found 0x7f67c11bd540, 0x7f6728189b90
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (165, 455) (359,
>> >> >>> 613)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 8: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (5, 0) (199, 158)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 8
>> >> >>> dependent item found 0x7f67c11bd540, 0x7f67285e68c0
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (168, 437) (339,
>> >> >>> 452)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 10: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (3, 3) (174, 18)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2030:red_clear_surface_drawables_from_pipe:
>> >> >>> surface
>> >> >>> 10
>> >> >>> dependent item found 0x7f67c1181838, 0x7f67281b6310
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:10258:display_channel_release_item: not pushed
>> >> >>> (101)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2633:red_display_detach_stream_gracefully: stream
>> >> >>> 49:
>> >> >>> upgrade by screenshot. has current 0. box ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (257, 265) (409,
>> >> >>> 377)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:4593:red_update_area: surface 0: area ==>
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> ../spice-common/common/rect.h:91:rect_debug: (257, 265) (409,
>> >> >>> 377)
>> >> >>> (/usr/local/bin/qemu:21130): SpiceWorker-Debug **:
>> >> >>> red_worker.c:2674:red_detach_streams_behind: stream 49
>> >> >>> Segmentation fault
>> >> >>>
>> >> >>
>> >> >> Hi Nicolas,
>> >> >>
>> >> >> Thanks for the report (s), can you please provide a stacktrace
>> >> >> of
>> >> >> qemu when it segfaults?
>> >> >> Simplest way differs depending on how you run it:
>> >> >> 1) standalone - you launch qemu directly. Then run it under
>> >> >> gdb:
>> >> >> gdb --args qemu...
>> >> >> r
>> >> >> <do what leads to segfault>
>> >> >> thread apply all bt
>> >> >> 2) you launch qemu via libvirt / any other means.
>> >> >> launch qemu normally
>> >> >> if this is the only copy of qemu that is running, you can
>> >> >> launch:
>> >> >> gdb -p `pgrep qemu`
>> >> >> if you have more then one, you'll need to identify the pid
>> >> >> yourself.
>> >> >> <do what leads to segfault>
>> >> >> thread apply all bt
>> >> >>
>> >> >> Alon
>> >> >>
>> >> >>>
>> >> >>>
>> >> >>> Regards,
>> >> >>> Nicolas
>> >> >>> _______________________________________________
>> >> >>> Spice-devel mailing list
>> >> >>> Spice-devel@xxxxxxxxxxxxxxxxxxxxx
>> >> >>> http://lists.freedesktop.org/mailman/listinfo/spice-devel
>> >> >>>
>> >>
>>
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