[Bug 93737] egl segfault since gallium/radeon: implement PIPE_CAP_INVALIDATE_BUFFER

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93737

            Bug ID: 93737
           Summary: egl segfault since gallium/radeon: implement
                    PIPE_CAP_INVALIDATE_BUFFER
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adf.lists at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

R9285 first noticed trying to set up wayland/weston, bisected with
eglgears_x11.

Since -

commit 321140d563730b210e6390c5b73c09fdcf9649af
Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date:   Thu Jan 14 09:41:04 2016 -0500

    gallium/radeon: implement PIPE_CAP_INVALIDATE_BUFFER

I get segfaults trying to run egl.

bt from gears

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff239fb23 in r600_do_invalidate_resource (rctx=0x692b30, rbuffer=0x0)
at r600_buffer_common.c:219
219             if (rctx->ws->buffer_is_user_ptr(rbuffer->buf))
(gdb) bt
#0  0x00007ffff239fb23 in r600_do_invalidate_resource (rctx=0x692b30,
rbuffer=0x0) at r600_buffer_common.c:219
#1  0x00007ffff2210dd2 in dri_flush (cPriv=<optimized out>, dPriv=<optimized
out>, flags=5, reason=<optimized out>) at dri_drawable.c:496
#2  0x00007ffff645ddb8 in dri2_x11_swap_buffers_msc (msc=0, divisor=0,
remainder=0, drv=<optimized out>, draw=0x6f9160, disp=<optimized out>) at
drivers/dri2/platform_x11.c:837
#3  dri2_x11_swap_buffers (drv=<optimized out>, disp=<optimized out>,
draw=0x6f9160) at drivers/dri2/platform_x11.c:873
#4  0x00007ffff6453d76 in eglSwapBuffers (dpy=0x62af30, surface=<optimized
out>) at main/eglapi.c:1010
#5  0x0000000000403a71 in _eglutNativeEventLoop () at eglut_x11.c:249
#6  0x000000000040328b in eglutMainLoop () at eglut.c:272
#7  0x0000000000401d16 in main (argc=1, argv=0x7fffffffe108) at eglgears.c:298

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