Find a file
Pierre-Eric Pelloux-Prayer 1bd64d8cfb winsys/amdgpu: don't read bo->u.slab.entry after pb_slab_free
Otherwise the pb_slabs might be freed by another thread in between.

Valgrind example:

==676841== Invalid read of size 1
==676841==    at 0x6B0A8B3: get_slab_wasted_size (amdgpu_bo.c:659)
==676841==    by 0x6B0AD7D: amdgpu_bo_slab_destroy (amdgpu_bo.c:684)
==676841==    by 0x6ACF94F: pb_destroy (pb_buffer.h:259)
==676841==    by 0x6ACF94F: pb_reference_with_winsys (pb_buffer.h:282)
==676841==    by 0x6ACF94F: radeon_bo_reference (radeon_winsys.h:754)
==676841==    by 0x6ACF94F: si_replace_buffer_storage (si_buffer.c:274)
==676841==    by 0x6957036: tc_call_replace_buffer_storage (u_threaded_context.c:1554)
                            [...]
==676841==    by 0x4ECCDEE: clone (clone.S:95)
==676841==  Address 0x27879945 is 5 bytes inside a block of size 208 free'd
==676841==    at 0x48399AB: free (vg_replace_malloc.c:538)
==676841==    by 0x6B0E8BD: amdgpu_bo_slab_free (amdgpu_bo.c:863)
==676841==    by 0x6B89D4A: pb_slabs_reclaim_locked (pb_slab.c:84)
==676841==    by 0x6B89D4A: pb_slab_alloc (pb_slab.c:130)
==676841==    by 0x6B0EE7F: amdgpu_bo_create (amdgpu_bo.c:1429)

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4736
Fixes: 965c6445ad ("winsys/amdgpu,radeonsi: add HUD counters for how much memory is wasted by slabs")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11010>
2021-06-07 07:38:35 +00:00
.gitlab/issue_templates issue_templates/Bug Report: Rename master branch to main 2021-05-05 12:20:11 -07:00
.gitlab-ci ci: build the hang-detection tool into x86_test-vk 2021-06-02 16:30:57 +00:00
bin bin/pick: Rename master branch to main 2021-05-05 12:20:11 -07:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs v3dv: expose VK_KHR_storage_buffer_storage_class 2021-06-07 06:09:01 +00:00
include gallium/dri: Add Y41x formats 2021-05-21 01:40:22 +00:00
src winsys/amdgpu: don't read bo->u.slab.entry after pb_slab_free 2021-06-07 07:38:35 +00:00
subprojects util: Perfetto SDK v15.0 2021-05-07 13:41:38 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig docs: fixup indentation 2020-01-18 11:39:32 +01:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml ci: build the hang-detection tool into x86_test-vk 2021-06-02 16:30:57 +00:00
.mailmap .mailmap: fix email for Daniel Schürmann 2021-03-22 18:56:22 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
Android.common.mk meson, util: Make zlib optional again 2021-03-19 19:33:59 +00:00
Android.mk meson/gallium: Add an option to not use LLVM for gallium draw module 2021-02-25 17:48:16 +00:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
meson.build zink: Fix MacOS compiling issues 2021-06-04 08:58:16 +00:00
meson_options.txt zink: Fix MacOS compiling issues 2021-06-04 08:58:16 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
REVIEWERS docs: remove doxygen support 2021-05-05 18:53:08 +00:00
VERSION VERSION: bump to 21.2.0-devel 2021-04-14 21:11:07 +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


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.