[Qemu-devel] [Bug 1243639] Re: qemu-1.5.3 segment fault with -vga qxl

[Thomas Huth]

Triaging old bug tickets ... QEMU 1.5 is quite old already - can you
still reproduce the crash with the latest version of QEMU?

** Changed in: qemu
       Status: New => Incomplete

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Title:
  qemu-1.5.3   segment fault  with  -vga qxl

Status in QEMU:
  Incomplete

Bug description:
  execute " qemu-system-x86_64    -enable-kvm -machine accel=kvm:tcg -m
  1G  -drive file=/dev/sda  --full-screen -spice
  addr=127.0.0.1,port=5900,disable-ticketing -vga qxl "  on shell will
  get  segment fault  after  a few seconds   if  I  don't connect to it
  with  spicec client  immediately.

  IF  excute  "spicec -h 127.0.0.1 -p 5900 "  immediately !!!!    after
  the  qemu-system-x86_64  execution, then  no segment fault happens
  and  it runs well.

  =====================

  GDB output:

  address@hidden:~# gdb /usr/local/bin/qemu-system-x86_64
  GNU gdb (GDB) 7.4.1-debian
  (gdb) run -enable-kvm -machine accel=kvm:tcg -m 1G  -drive file=/dev/sda  
--full-screen -spice addr=127.0.0.1,port=5900,disable-ticketing -vga qxl

  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
  [New Thread 0x7ffff3737700 (LWP 14797)]
  [New Thread 0x7ffff2d54700 (LWP 14798)]
  [New Thread 0x7ffff0fff700 (LWP 14799)]

  Program received signal SIGSEGV, Segmentation fault.
  0x00007ffff683ad70 in pixman_image_get_data () from 
/usr/lib/x86_64-linux-gnu/libpixman-1.so.0
  (gdb) bt
  #0  0x00007ffff683ad70 in pixman_image_get_data () from 
/usr/lib/x86_64-linux-gnu/libpixman-1.so.0
  #1  0x000055555581060a in surface_data (s=0x5555566183a0) at 
/zh-download/QEMU/qemu-1.5.3/include/ui/console.h:235
  #2  0x0000555555818616 in vga_draw_graphic (s=0x55555662c778, full_update=1) 
at /zh-download/QEMU/qemu-1.5.3/hw/display/vga.c:1788
  #3  0x0000555555818c6a in vga_update_display (opaque=0x55555662c778) at 
/zh-download/QEMU/qemu-1.5.3/hw/display/vga.c:1917
  #4  0x000055555580eb15 in qxl_hw_update (opaque=0x55555662bd70) at 
/zh-download/QEMU/qemu-1.5.3/hw/display/qxl.c:1766
  #5  0x00005555557bd6bc in graphic_hw_update (con=0x555556618d00) at 
ui/console.c:254
  #6  0x00005555557c8426 in qemu_spice_display_refresh (ssd=0x55555662c418) at 
ui/spice-display.c:417
  #7  0x000055555580eff0 in display_refresh (dcl=0x55555662c420) at 
/zh-download/QEMU/qemu-1.5.3/hw/display/qxl.c:1886
  #8  0x00005555557c0cb1 in dpy_refresh (s=0x555556618370) at ui/console.c:1436
  #9  0x00005555557bd3af in gui_update (opaque=0x555556618370) at 
ui/console.c:192
  #10 0x0000555555797f20 in qemu_run_timers (clock=0x5555565b5a30) at 
qemu-timer.c:394
  #11 0x0000555555798183 in qemu_run_all_timers () at qemu-timer.c:453
  #12 0x0000555555760bb7 in main_loop_wait (nonblocking=0) at main-loop.c:470
  #13 0x00005555557cd19c in main_loop () at vl.c:2029
  #14 0x00005555557d43f2 in main (argc=13, argv=0x7fffffffe2b8, 
envp=0x7fffffffe328) at vl.c:4419
  (gdb) 

  
  ======================

  http://www.spice-space.org/download/releases/spice-0.12.4.tar.bz2
  http://www.spice-space.org/download/releases/spice-protocol-0.12.6.tar.bz2
  spice  compiling 
        ./configure --enable-smartcard=no   && make

  qemu-1.5.3
  compiling 
      ./configure \
  --disable-strip  --enable-debug \
  --target-list=x86_64-softmmu,x86_64-linux-user  \
  --disable-sdl  --audio-drv-list=alsa --disable-vnc --disable-xen 
--disable-libiscsi  \
        --disable-seccomp --disable-glusterfs --disable-libssh2 
--disable-smartcard-nss  \
        --disable-usb-redir --disable-brlapi --disable-curl  --disable-bsd-user 
                    \
    \
  --enable-kvm --enable-spice --enable-system --enable-guest-agent 
--enable-vhost-net 

  
  address@hidden:~# qemu-system-x86_64 -version
  QEMU emulator version 1.5.3, Copyright (c) 2003-2008 Fabrice Bellard

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