Re: [Qemu-devel] [PATCH 2/4] egl-headless: use framebuffer helper functions.

[Gerd Hoffmann <kraxel@redhat.com>]

On Wed, 2017-06-07 at 21:02 +0000, Marc-André Lureau wrote:
> Hi
> 
> The patch looks good to me, but I tried to use egl-headless for the
> first time, and I get a weird crash on virgl init:
> (gdb) bt
> #0  0x00007fffd8cd935f in rawmemchr () at /lib64/libc.so.6
> #1  0x00007fffd8cc1832 in _IO_str_init_static_internal () at
> /lib64/libc.so.6
> #2  0x00007fffd8cb37e7 in vsscanf () at /lib64/libc.so.6
> #3  0x00007ffff6e818a6 in vsscanf () at /lib64/libasan.so.3
> #4  0x00007ffff6e819d3 in sscanf () at /lib64/libasan.so.3
> #5  0x00007ffff6bfe239 in vrender_get_glsl_version
> (glsl_version=0x60e00001f2b8) at vrend_renderer.c:6026
> #6  0x00007ffff6bfe239 in vrend_create_context (id=id@entry=0, nlen=n
> len@entry=0, debug_name=debug_name@entry=0x0) at
> vrend_renderer.c:4033
> #7  0x00007ffff6c04f2f in vrend_renderer_context_create_internal
> (handle=0, nlen=0, debug_name=0x0) at vrend_decode.c:1066
> #8  0x00007ffff6bf72a3 in vrend_renderer_init (cbs=<optimized out>,
> flags=0) at vrend_renderer.c:3874
> #9  0x0000555556b52cc1 in virtio_gpu_virgl_init (g=0x633000008d10) at
> /home/elmarco/src/qemu/hw/display/virtio-gpu-3d.c:623
> 
> This doesn't happen when I use virgl/spice (gl=on obviously)
> 
> I guess you don't know what's going on,

No, havn't seen this before.

cheers,
  Gerd