Gert Wollny 9b0e8d8723 winsys/virgl: correct resource and handle allocation (v2)
Fixes crash with
  piglit/bin/map_buffer_range-invalidate CopyBufferSubData \
                               increment-offset -auto -fbo

* Resize the resource storage already when the count is equal to the
  allocated size, fixes:

  Invalid write of size 8
  at 0xB72E4CF: virgl_drm_add_res (virgl_drm_winsys.c:629)
  by 0xB72E4CF: virgl_drm_emit_res (virgl_drm_winsys.c:663)
  by 0xB72A44A: virgl_encode_resource_copy_region (virgl_encode.c:776)
  by 0xB40CD12: st_copy_buffer_subdata (st_cb_bufferobjects.c:585)
  by 0xB244A3B: _mesa_CopyBufferSubData (bufferobj.c:2940)
  by 0x109A1E: upload (invalidate.c:169)
  by 0x109C2F: piglit_display (invalidate.c:215)
  by 0x4F80FBE: run_test (piglit_fbo_framework.c:52)
  by 0x4F66E5F: piglit_gl_test_run (piglit-framework-gl.c:229)
  by 0x10949D: main (invalidate.c:47)
  Address 0xbe07d30 is 0 bytes after a block of size 4,096 alloc'd
  at 0x4C31B25: calloc (in
       /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  by 0xB72DAAF: virgl_drm_cmd_buf_create (virgl_drm_winsys.c:567)

* Also resize the space allocated for the handles, fixes:

  Invalid write of size 4
  at 0xB72E4F0: virgl_drm_add_res (virgl_drm_winsys.c:631)
  by 0xB72E4F0: virgl_drm_emit_res (virgl_drm_winsys.c:663)
  by 0xB72A44A: virgl_encode_resource_copy_region (virgl_encode.c:776)
  by 0xB40CD12: st_copy_buffer_subdata (st_cb_bufferobjects.c:585)
  by 0xB244A3B: _mesa_CopyBufferSubData (bufferobj.c:2940)
  by 0x109A1E: upload (invalidate.c:169)
  by 0x109C2F: piglit_display (invalidate.c:215)
  by 0x4F80FBE: run_test (piglit_fbo_framework.c:52)
  by 0x4F66E5F: piglit_gl_test_run (piglit-framework-gl.c:229)
  by 0x10949D: main (invalidate.c:47)
  Address 0xbe08570 is 0 bytes after a block of size 2,048 alloc'd
  at 0x4C2FB0F: malloc (
    in /usr/lib/valgrind/vgpreload_memcheck-amd64- linux.so)
  by 0xB72DAC8: virgl_drm_cmd_buf_create (virgl_drm_winsys.c:572)

Fixes: 4b15b5e803 ("virgl: resize resource bo allocation if we need to.")

v2: - Use REALLOC macro and avoid memory leak when re-allocation fails
    - add Fixes tag (both Emil Velikov)
    - reorder commit message

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
2018-09-05 13:54:01 +02:00
2018-08-16 13:53:10 -07:00
2016-08-30 16:44:00 -04:00
2017-09-06 17:48:50 +01:00
2018-08-22 18:02:11 +01:00
2018-08-16 13:52:56 -07:00
2018-08-02 18:00:15 +03:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


Source
------

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Other repositories are likely forks, and code found there is not supported.


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------------

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---------------

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-----------

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------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.html
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discussions.
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