[Wayland-bugs] [Bug 80963] glxgears stops rendering randomly under xwayland with dri3 & glamor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80963

--- Comment #2 from Boyan Ding <stu_dby at 126.com> ---
Finally built mesa (10.2.3) myself with debug symbols and backtrace is as
below:
#0  0x00007ffff70bd800 in __poll_nocancel () from /usr/lib/libc.so.6
#1  0x00007ffff55fc992 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007ffff55fddc9 in xcb_wait_for_special_event ()
   from /usr/lib/libxcb.so.1
#3  0x00007ffff7bbc495 in dri3_find_back (c=0x605790, priv=0xa346e0)
    at dri3_glx.c:1103
#4  0x00007ffff7bbc51b in dri3_get_buffer (driDrawable=0x6a48e0, format=4107, 
    buffer_type=dri3_buffer_back, loaderPrivate=0xa346e0) at dri3_glx.c:1127
#5  0x00007ffff7bbc92e in dri3_get_buffers (driDrawable=0x6a48e0, format=4107, 
    stamp=0x6a4910, loaderPrivate=0xa346e0, buffer_mask=1, 
    buffers=0x7fffffffe640) at dri3_glx.c:1274
#6  0x00007ffff3563c10 in intel_update_image_buffers (brw=0x7ffff7fd4040, 
    drawable=0x6a48e0) at brw_context.c:1395
#7  0x00007ffff3563436 in intel_update_renderbuffers (context=0x6a4020, 
    drawable=0x6a48e0) at brw_context.c:1087
#8  0x00007ffff35634cd in intel_prepare_render (brw=0x7ffff7fd4040)
    at brw_context.c:1108
#9  0x00007ffff3556969 in brw_clear (ctx=0x7ffff7fd4040, mask=18)
    at brw_clear.c:234
#10 0x00007ffff31b875e in _mesa_Clear (mask=16640) at main/clear.c:226
#11 0x00000000004027fa in draw () at gears.c:183
#12 0x00007ffff76b1ac4 in ?? () from /usr/lib/libglut.so.3
#13 0x00007ffff76b5329 in fgEnumWindows () from /usr/lib/libglut.so.3
#14 0x00007ffff76b207d in glutMainLoopEvent () from /usr/lib/libglut.so.3
#15 0x00007ffff76b28e5 in glutMainLoop () from /usr/lib/libglut.so.3
#16 0x00000000004031af in main (argc=1, argv=0x7fffffffeb78) at gears.c:405

Seems that it halts in waiting for back buffers.

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