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4284705733
This change fixes a buffer overflow by implementing the
special swizzles. This behavior is already available with
evergreen_convert_border_color().
For instance, this issue is triggered on a cayman gpu with
"piglit/bin/texwrap bordercolor -auto -fbo" or "piglit/bin/max-samplers -auto -fbo":
==5610==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000012d20 at pc 0x7fb798cb876f bp 0x7ffd78670460 sp 0x7ffd78670458
READ of size 4 at 0x603000012d20 thread T0
#0 0x7fb798cb876e in cayman_convert_border_color ../src/gallium/drivers/r600/evergreen_state.c:2444
#1 0x7fb798cb876e in evergreen_emit_sampler_states ../src/gallium/drivers/r600/evergreen_state.c:2539
#2 0x7fb7989e6cb2 in r600_emit_atom ../src/gallium/drivers/r600/r600_pipe.h:655
#3 0x7fb7989e6cb2 in r600_draw_vbo ../src/gallium/drivers/r600/r600_state_common.c:2333
#4 0x7fb7985082c7 in u_vbuf_draw_vbo ../src/gallium/auxiliary/util/u_vbuf.c:1497
#5 0x7fb796ef2eda in cso_draw_vbo ../src/gallium/auxiliary/cso_cache/cso_context.h:262
#6 0x7fb796ef2eda in st_draw_gallium_multimode ../src/mesa/state_tracker/st_draw.c:170
#7 0x7fb7970d9cfd in vbo_exec_vtx_flush ../src/mesa/vbo/vbo_exec_draw.c:341
#8 0x7fb7970d32d7 in vbo_exec_FlushVertices_internal ../src/mesa/vbo/vbo_exec_api.c:693
#9 0x7fb7970d32d7 in vbo_exec_FlushVertices ../src/mesa/vbo/vbo_exec_api.c:1193
#10 0x7fb7975f237c in enable_texture ../src/mesa/main/enable.c:337
Fixes:
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| .github/workflows | ||
| .gitlab | ||
| .gitlab-ci | ||
| android | ||
| bin | ||
| build-support | ||
| docs | ||
| include | ||
| src | ||
| subprojects | ||
| .clang-format | ||
| .clang-format-ignore | ||
| .clang-format-include | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .graphqlrc.yml | ||
| .mailmap | ||
| CODEOWNERS | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| VERSION | ||
`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 Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ 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.