[Spice-devel] Fwd: Re: virt-viewer 0.5.4 crashes on debian wheezy

Dominique Rodrigues dominique.rodrigues at nanocloud.com
Fri Sep 21 16:51:00 PDT 2012



-------- Original Message --------
Subject: Re: [Spice-devel] virt-viewer 0.5.4 crashes on debian wheezy
Date: Sat, 22 Sep 2012 01:50:31 +0200
From: Dominique Rodrigues <dominique.rodrigues at nanocloud.com>
To: Christophe Fergeau <cfergeau at redhat.com>

On Fri, 21 Sep 2012 15:10:58 +0200, Christophe Fergeau
<cfergeau at redhat.com> wrote:
> On Fri, Sep 21, 2012 at 12:23:30AM +0200, Dominique Rodrigues wrote:
>> 
>> 
>> I guess I got the issue. 
>> 
>> In my case, to keep remote-viewer stable, the
>> following option is mandatory : 
>> 
>> -device virtio-serial-pci 
>> 
>> when I launch
>> a VM with qemu-kvm. 
>> 
>> I did not have problem previsously, and still not,
>> with VM configurations already with that option. 
>> 
>> So I just have to change
>> configs where this line is missing. 
> 
> What you describe is a workaround at best, I'd rather understand what's
> going on in this case and have virt-viewer/remote-viewer fails
gracefully
> or handle this situation. So gdb/valgrind traces would still be very
> helpful.
> 
> Christophe

Ok, so here are some feedbacks

_________________________________________________________
COMPILATION config :

./configure --without-libvirt --with-gtk=3.0
SPICE_GTK_CFLAGS="-I/usr/local/include/spice-client-gtk-3.0
-I/usr/local/include/spice-client-glib-2.0/ -I/usr/local/include/spice-1
-I/usr/local/include/spice-server" CFLAGS="-O0 -g3 -ggdb3"

make && make install
_________________________________________________________

RUN under Valgrind :

dominique at nanoClouD:~$ valgrind --vgdb=full /usr/local/bin/remote-viewer
spice://localhost:7177
==20854== Memcheck, a memory error detector
==20854== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==20854== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright
info
==20854== Command: /usr/local/bin/remote-viewer spice://localhost:7177
==20854==
==20854== Warning: client switching stacks?  SP change: 0x7fefff5d8 -->
0x1c3a4fe8
==20854==          to suppress, use: --max-stackframe=33869374960 or
greater
==20854== Warning: client switching stacks?  SP change: 0x1c3a4bf8 -->
0x7fefff5e0
==20854==          to suppress, use: --max-stackframe=33869375976 or
greater
==20854== Warning: client switching stacks?  SP change: 0x7fefff578 -->
0x1c3a4c00
==20854==          to suppress, use: --max-stackframe=33869375864 or
greater
==20854==          further instances of this message will not be shown.
==20854== Invalid free() / delete / delete[] / realloc()
==20854==    at 0x4C27D4E: free (vg_replace_malloc.c:427)
==20854==    by 0x41A4D8: virt_viewer_session_spice_main_channel_event
(virt-viewer-session-spice.c:352)
==20854==    by 0xA2F8058: g_cclosure_marshal_VOID__ENUMv (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA2F5A02: ??? (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA30E075: g_signal_emit_valist (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA30E8C1: g_signal_emit (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0x69D2EA9: do_emit_main_context (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D92EF: emit_main_context (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0xA57E204: g_main_context_dispatch (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0xA57E537: ??? (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0xA57E931: g_main_loop_run (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0x64AF2D4: gtk_main (in
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0.400.2)
==20854==  Address 0x1c79f4b0 is 0 bytes inside a block of size 10 free'd
==20854==    at 0x4C27D4E: free (vg_replace_malloc.c:427)
==20854==    by 0x41A544: virt_viewer_session_spice_main_channel_event
(virt-viewer-session-spice.c:329)
==20854==    by 0xA2F8058: g_cclosure_marshal_VOID__ENUMv (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA2F5A02: ??? (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA30E075: g_signal_emit_valist (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0xA30E8C1: g_signal_emit (in
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.3200.3)
==20854==    by 0x69D2EA9: do_emit_main_context (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D92EF: emit_main_context (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0xA57E204: g_main_context_dispatch (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0xA57E537: ??? (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0xA57E931: g_main_loop_run (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.3)
==20854==    by 0x64AF2D4: gtk_main (in
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0.400.2)
==20854==
==20854== Syscall param socketcall.sendto(msg) points to uninitialised
byte(s)
==20854==    at 0xA839602: send (send.c:28)
==20854==    by 0xA0064C9: g_socket_send_with_blocking (in
/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.3200.3)
==20854==    by 0x69D3020: spice_channel_flush_wire (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D32BB: spice_channel_write (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D342C: spice_channel_write_msg (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D67FF: spice_channel_iterate_write (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D6A7E: spice_channel_iterate (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D7473: spice_channel_coroutine (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x6A07F32: coroutine_trampoline (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x6A07C1B: continuation_trampoline (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0xAA88E1F: ??? (in /lib/x86_64-linux-gnu/libc-2.13.so)
==20854==    by 0x796EF9955EC873FF: ???
==20854==  Address 0x1caf9a21 is 33 bytes inside a block of size 86
alloc'd
==20854==    at 0x4C28BED: malloc (vg_replace_malloc.c:263)
==20854==    by 0x6A1C850: spice_malloc (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x6A1C1E4: spice_marshaller_linearize (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D3411: spice_channel_write_msg (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D67FF: spice_channel_iterate_write (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D6A7E: spice_channel_iterate (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x69D7473: spice_channel_coroutine (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x6A07F32: coroutine_trampoline (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0x6A07C1B: continuation_trampoline (in
/usr/local/lib/libspice-client-glib-2.0.so.8.0.0)
==20854==    by 0xAA88E1F: ??? (in /lib/x86_64-linux-gnu/libc-2.13.so)
==20854==    by 0x796EF9955EC873FF: ???
==20854==    by 0x7FEFFF63F: ???
==20854==

(remote-viewer:20854): GSpice-WARNING **: Warning no automount-inhibiting
implementation available
--20854-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV)
- exiting
--20854-- si_code=1;  Faulting address: 0x100000009;  sp: 0x403175bf0

valgrind: the 'impossible' happened:
   Killed by fatal signal
==20854==    at 0x3805FD87: vgPlain_get_StackTrace_wrk
(m_stacktrace.c:334)
==20854==    by 0x3805FE66: vgPlain_get_StackTrace (m_stacktrace.c:814)
==20854==    by 0x3804A5F5: record_ExeContext_wrk (m_execontext.c:317)
==20854==    by 0x38020FB9: die_and_free_mem (mc_malloc_wrappers.c:343)
==20854==    by 0x3808F3E6: vgPlain_scheduler (scheduler.c:1461)
==20854==    by 0x3809E449: run_a_thread_NORETURN (syswrap-linux.c:98)

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable
Erreur de segmentation


That's it !

-- 
DOMINIQUE RODRIGUES

  NANOCLOUD
 8, rue Lemercier
 75017 Paris
 France
 standard : +33 1 77 69 64 38 529 002 743 R.C.S. Paris


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