eglSwapBuffers() call

I was build drivers r4p0 for Orange Pi 2 (Allwiner H3 soc) and get seg fault from running test app colour triangle with FBTURBO and mali r4p0 drivers.

Lubuntu 1404

ump

mali

mali_drm

and ssvb/xf86-video-fbturbo

also MaliLib.so blobs in /usr/lib

After debug I found that It crash in the eglSwapBuffers() call.

And here some back traces

(gdb) bt

#0 __GI___libc_malloc (bytes=) at malloc.c:2907

#1  0xb6f59cc4 in __egl_mali_post_to_window_surface () from /usr/lib/libEGL.so

#2  0xb6f59294 in _egl_swap_buffers () from /usr/lib/libEGL.so

#3  0xb6f5836c in eglSwapBuffers () from /usr/lib/libEGL.so

#4  0x00009050 in Redraw (width=200, height=200) at test.c:135

#5  0x00009790 in main (argc=1, argv=0xbefff6f4) at test.c:328

//================================================== 

//==================================================
Single stepping until exit from function _egl_surface_job_incref,
which has no line number information.
0xb6f59dbe in __egl_mali_post_to_window_surface () from /usr/lib/libEGL.so
(gdb) s
Single stepping until exit from function __egl_mali_post_to_window_surface,
which has no line number information.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb69d1460 (LWP 2377)]
0xb6f5a224 in _egl_surface_job_decref () from /usr/lib/libEGL.so
(gdb) bt
#0 0xb6f5a224 in _egl_surface_job_decref () from /usr/lib/libEGL.so
#1  0xb6f596be in __egl_worker_callback () from /usr/lib/libEGL.so
#2  0xb6f62238 in _mali_base_worker_thread () from /usr/lib/libEGL.so
#3  0xb6d10fbc in start_thread (arg=0xb69d1460) at pthread_create.c:314
#4  0xb6dc720c in ?? ()
at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)