[Bug 91083] New: Atom D525 pineview segfault in gen3_emit_composite_primitive_constant_identity_mask_no_offset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91083

            Bug ID: 91083
           Summary: Atom D525 pineview segfault in
                    gen3_emit_composite_primitive_constant_identity_mask_n
                    o_offset
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: NetBSD
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: prlw1 at cam.ac.uk
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

cpu0: "Intel(R) Atom(TM) CPU D525   @ 1.80GHz"
    Vendor Name: Intel (0x8086)
    Device Name: Pineview Integrated Graphics Device (0xa001)
xf86-videl-intel 2.99.917

While running firefox in twm (i.e., nothing too fancy):

Core was generated by `Xorg'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f7fefb2c90e in
gen3_emit_composite_primitive_constant_identity_mask_no_offset
(sna=0x7f7ff7b72000, op=0x7f7fffffcbc0, r=0x7f7fffffcba0)
    at /usr/xsrc/external/mit/xf86-video-intel/dist/src/sna/gen3_render.c:785
785             v[8] = v[4] = r->dst.x;
(gdb) bt
#0  0x00007f7fefb2c90e in
gen3_emit_composite_primitive_constant_identity_mask_no_offset
(sna=0x7f7ff7b72000, op=0x7f7fffffcbc0, r=0x7f7fffffcba0)
    at /usr/xsrc/external/mit/xf86-video-intel/dist/src/sna/gen3_render.c:785
#1  0x00007f7fefb32d7d in gen3_render_composite_blt (sna=0x7f7ff7b72000, 
    op=0x7f7fffffcbc0, r=0x7f7fffffcba0)
    at /usr/xsrc/external/mit/xf86-video-intel/dist/src/sna/gen3_render.c:2503
#2  0x00007f7fefa8d83c in glyphs0_to_dst (sna=0x7f7ff7b72000, op=3 '\003', 
    src=0x7f7ff7bdf780, dst=0x7f7ff4d0ce80, src_x=0, src_y=0, nlist=0, 
    list=0x7f7fffffcfc0, glyphs=0x7f7fffffd558)
    at /usr/xsrc/external/mit/xf86-video-intel/dist/src/sna/sna_glyphs.c:906
#3  0x00007f7fefa9033b in sna_glyphs (op=3 '\003', src=0x7f7ff7bdf780, 
    dst=0x7f7ff4d0ce80, mask=0x0, src_x=410, src_y=434, nlist=1, 
    list=0x7f7fffffcfc0, glyphs=0x7f7fffffd3c0)
    at /usr/xsrc/external/mit/xf86-video-intel/dist/src/sna/sna_glyphs.c:1998
#4  0x0000000000503550 in ?? ()
#5  0x00000000004ee728 in ?? ()
#6  0x0000000000453611 in Dispatch ()
#7  0x000000000059e10a in main ()


(gdb) print *r
$5 = {src = {x = 771, y = 425}, mask = {x = 528, y = 48}, dst = {x = 771, 
    y = 425}, width = 4, height = 9}
(gdb) print *sna->render.vertices
$9 = 7
(gdb) print sna->render.vertex_used 
$10 = 34824
(gdb) print {float[12]}v
$3 = {0, 0, 0, 0, 1.2906298e-38, 2.35098856e-38, 2.02823113e-38, 
  2.02823113e-38, -6.63259846e-20, -3.26270731e+38, -3.26270731e+38, 
  -3.26270731e+38}

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