[Bug 77218] New: [BDW]Piglit some spec/OpenGL_1.1/depthstencil-default_fb* cases segfault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77218

          Priority: medium
            Bug ID: 77218
          Assignee: idr at freedesktop.org
           Summary: [BDW]Piglit some
                    spec/OpenGL_1.1/depthstencil-default_fb* cases
                    segfault
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform: Broadwell
Libdrm:       
(master)libdrm-2.4.52-10-g1cb5fc706cf5913d9dee33c939f65a23ecea17a5
Mesa:        (master)159cec9dec2320d821d388c0df8140c7705b6e0b
Xserver:   
(master)xorg-server-1.15.99.901-204-g901fbfbbbd71c0d82080957f8ba09eebbc786f2b
Xf86_video_intel:(master)2.99.911-44-g3310ee89c1f1a663de5f5b12b8125809a213996f
Cairo:        (master)bb17403622e9ea474017e0039af8ee48b2b285db
Libva:        (staging)960352aaf1e11891a533ce2c98b16edde24d6851
Libva_intel_driver:(staging)150f67c67bd92cd201b75a92388fe3a63b00cd8a
Kernel:    (drm-intel-nightly) 7cd8b823493acc320c7db9112de9d4e21c6dbd11

Bug detailed description:
-----------------------------
Following spec_OpenGL_1.1_depthstencil-default_fb* cases segfault on Broadwell
with Mesa master branch, but work well on Haswell.
spec_OpenGL_1.1_depthstencil-default_fb-copypixels_samples=2
spec_OpenGL_1.1_depthstencil-default_fb-copypixels_samples=4
spec_OpenGL_1.1_depthstencil-default_fb-copypixels_samples=6
spec_OpenGL_1.1_depthstencil-default_fb-copypixels_samples=8
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-24_8_samples=2
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-24_8_samples=4
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-24_8_samples=6
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-24_8_samples=8
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-32F_24_8_REV_samples=2
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-32F_24_8_REV_samples=4
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-32F_24_8_REV_samples=6
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-32F_24_8_REV_samples=8
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-FLOAT-and-USHORT_samples=2
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-FLOAT-and-USHORT_samples=4
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-FLOAT-and-USHORT_samples=6
spec_OpenGL_1.1_depthstencil-default_fb-drawpixels-FLOAT-and-USHORT_samples=8

run ./bin/fbo-depthstencil copypixels default_fb -samples=2 -auto
output:
Testing default_fb.
Testing glCopyPixels(depthstencil).
Segmentation fault (core dumped)

(gdb) bt
#0  0x00007ffff403700e in _swrast_unmap_texture (ctx=ctx at entry=0x7ffff3e56038,
texObj=0xab5600) at swrast/s_texture.c:329
#1  0x00007ffff4037142 in _swrast_unmap_textures (ctx=ctx at entry=0x7ffff3e56038)
at swrast/s_texture.c:372
#2  0x00007ffff4006db9 in _swrast_span_render_finish (ctx=0x7ffff3e56038) at
swrast/s_context.c:885
#3  0x00007ffff4006b15 in swrast_render_finish (ctx=0x7ffff3e56038) at
swrast/s_context.h:379
#4  _swrast_CopyPixels (ctx=ctx at entry=0x7ffff3e56038, srcx=srcx at entry=62,
srcy=srcy at entry=62, width=width at entry=61, height=height at entry=61,
destx=destx at entry=0,
    desty=desty at entry=0, type=type at entry=34041) at swrast/s_copypix.c:668
#5  0x00007ffff4054f7d in _mesa_meta_CopyPixels (ctx=ctx at entry=0x7ffff3e56038,
srcX=srcX at entry=62, srcY=srcY at entry=62, width=width at entry=61,
height=height at entry=61,
    dstX=dstX at entry=0, dstY=dstY at entry=0, type=type at entry=34041) at
drivers/common/meta.c:1785
#6  0x00007ffff4147dcd in intelCopyPixels (ctx=0x7ffff3e56038, srcx=62,
srcy=62, width=61, height=61, destx=0, desty=0, type=34041) at
intel_pixel_copy.c:214
#7  0x00007ffff3efc0ed in _mesa_CopyPixels (srcx=62, srcy=62, width=61,
height=61, type=34041) at main/drawpix.c:269
#8  0x00007ffff7d16457 in stub_glCopyPixels (x=62, y=62, width=61, height=61,
type=34041) at /GFX/Test/Piglit/piglit/tests/util/generated_dispatch.c:4574
#9  0x0000000000402768 in test_copy () at
/GFX/Test/Piglit/piglit/tests/fbo/fbo-depthstencil.c:367
#10 0x0000000000402b6f in piglit_display () at
/GFX/Test/Piglit/piglit/tests/fbo/fbo-depthstencil.c:467
#11 0x00007ffff7d0abf3 in run_test (gl_fw=0x604010, argc=3,
argv=0x7fffffffe298) at
/GFX/Test/Piglit/piglit/tests/util/piglit-framework-gl/piglit_winsys_framework.c:76
#12 0x00007ffff7d07127 in piglit_gl_test_run (argc=3, argv=0x7fffffffe298,
config=0x7fffffffe160) at
/GFX/Test/Piglit/piglit/tests/util/piglit-framework-gl.c:191
#13 0x0000000000401935 in main (argc=3, argv=0x7fffffffe298) at
/GFX/Test/Piglit/piglit/tests/fbo/fbo-depthstencil.c:43

Reproduce steps:
----------------------------
1. xinit
2. ./bin/fbo-depthstencil copypixels default_fb -samples=2 -auto

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