[Spice-devel] [ spice-devel ] libspice server segfault
Alon Levy
alevy at redhat.com
Thu Sep 6 06:25:58 PDT 2012
> Hello,
> with lastest git libspice ( 1.4.0 ) : no change , segfault.
Where is this 1.4.0 version coming from? the last release of libspice-server (spice.tar.gz) is 0.11.3 and the next should be 0.12.0.
http://spice-space.org/download.html#latest-server
> with lastest git spice/qemu ( rebase/spice- next ) : no segfault
> but
> a vm freeze ( in spice client and vnc client )
Can you look at qemu's log and see if it says "guest bug" ?
You'll have to enable guestdebug or use the trace point "qxl_set_guest_bug".
To enable guest debug append to qemu's command line:
-global qxl-vga.guestdebug=1
>
> Regards,
> Nicolas
>
> 2012/9/5 nicolas prochazka <prochazka.nicolas at gmail.com>:
> > 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 at redhat.com>:
> >>> Yes it happens with and without -vnc qemu cmdline
> >>> Nicolas
> >>> 2012/9/5 Alon Levy <alevy at redhat.com>:
> >>
> >> 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 at gmail.com>:
> >>> >> > 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 at redhat.com>:
> >>> >> >>> 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 at lists.freedesktop.org
> >>> >> >>> http://lists.freedesktop.org/mailman/listinfo/spice-devel
> >>> >> >>>
> >>> >>
> >>>
>
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