Alyssa Rosenzweig 694fe73976 asahi: Fix use-after-free in shader key
We need to take ownership of shader keys before we can insert them into
the hash table. Caught by ASan.

==6343==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x00016bc51410 at pc 0x00010498d6cc bp 0x00016bc50240 sp 0x00016bc4f9d0
READ of size 592 at 0x00016bc51410 thread T0
    #0 0x10498d6c8 in MemcmpInterceptorCommon(void*, int (*)(void const*, void const*, unsigned long), void const*, void const*, unsigned long)+0x208 (libclang_rt.asan_osx_dynamic.dylib:arm64e+0x196c8)
    #1 0x10498da08 in wrap_memcmp+0x98 (libclang_rt.asan_osx_dynamic.dylib:arm64e+0x19a08)
    #2 0x10b7f3f18 in asahi_shader_key_equal agx_state.c:867
    #3 0x10a482e7c in hash_table_search hash_table.c:325
    #4 0x10b7f4e94 in agx_update_shader agx_state.c:899
    #5 0x10b7f0dc4 in agx_draw_vbo agx_state.c:1590
    #6 0x10a7c28c4 in u_vbuf_draw_vbo u_vbuf.c:1498
    #7 0x10a5db03c in cso_multi_draw cso_context.c:1639
    #8 0x10aed03d0 in _mesa_validated_drawrangeelements draw.c:1812
    #9 0x10aed08d4 in _mesa_DrawElements draw.c:1945

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15109>
2022-02-21 11:53:32 -05:00
2022-02-21 14:41:01 +00:00
2022-01-19 15:17:17 +00:00
2022-02-02 22:49:09 +00:00

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


Source
------

This repository lives at https://gitlab.freedesktop.org/mesa/mesa.
Other repositories are likely forks, and code found there is not supported.


Build & install
---------------

You can find more information in our documentation (`docs/install.rst
<https://mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ mkdir build
  $ cd build
  $ meson ..
  $ sudo ninja install


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-------

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Bug reports
-----------

If you think something isn't working properly, please file a bug report
(`docs/bugs.rst <https://mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.
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