[Bug 61724] New: segfault in brw_update_renderbuffer_surface on i965 from multiple apps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61724

          Priority: medium
            Bug ID: 61724
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: segfault in brw_update_renderbuffer_surface on i965
                    from multiple apps
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: mike at vee.net
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Multiple apps are getting a segfault in brw_update_renderbuffer_surface,
including VLC, Compiz and Gazebo (which uses OGRE).

Ubuntu bug is reported here with a number of stack traces:

https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/947544

I'll attach a complete, more recent one in a moment, but the head looks like
this:

#0  brw_update_renderbuffer_surface (brw=0x403eb30, rb=0x4510500, unit=0) at
brw_wm_surface_state.c:1109
#1  0x00007fffdc0e9ab0 in brw_update_renderbuffer_surfaces (brw=0x403eb30) at
brw_wm_surface_state.c:1205
#2  0x00007fffdc0d3b02 in brw_upload_state (brw=brw at entry=0x403eb30) at
brw_state_upload.c:498
#3  0x00007fffdc0c11a7 in brw_try_draw_prims (max_index=4294967295,
min_index=4294952344, ib=<optimised out>, 
    nr_prims=<optimised out>, prim=0x7fffffffc580, arrays=<optimised out>,
ctx=0x403eb30) at brw_draw.c:493
#4  brw_draw_prims (ctx=0x403eb30, prim=0x7fffffffc580, nr_prims=<optimised
out>, ib=<optimised out>, 
    index_bounds_valid=<optimised out>, min_index=4294967295,
max_index=4294967295, tfb_vertcount=0x0) at brw_draw.c:589
#5  0x00007fffd73a43da in vbo_handle_primitive_restart (ctx=<optimised out>,
prim=<optimised out>, nr_prims=<optimised out>, 
    ib=<optimised out>, index_bounds_valid=<optimised out>,
min_index=<optimised out>, max_index=4294967295)
    at ../../../../../src/mesa/vbo/vbo_exec_array.c:570
#6  0x00007fffd73a53b4 in vbo_validated_drawrangeelements
(ctx=ctx at entry=0x403eb30, mode=mode at entry=4, 
    index_bounds_valid=index_bounds_valid at entry=0 '\000',
start=start at entry=4294967295, end=end at entry=4294967295, 
    count=count at entry=39690, type=type at entry=5123, indices=indices at entry=0x0,
basevertex=basevertex at entry=0, 
    numInstances=numInstances at entry=1, baseInstance=baseInstance at entry=0) at
../../../../../src/mesa/vbo/vbo_exec_array.c:867
#7  0x00007fffd73a5724 in vbo_exec_DrawElements (mode=4, count=39690,
type=5123, indices=0x0)
    at ../../../../../src/mesa/vbo/vbo_exec_array.c:997
#8  0x00007fffd4c05124 in Ogre::GLRenderSystem::_render(Ogre::RenderOperation
const&) ()
   from /usr/lib/x86_64-linux-gnu/OGRE-1.7.4/RenderSystem_GL.so

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