Find a file
Pierre-Eric Pelloux-Prayer f5f9e42e5e 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>
(cherry picked from commit 1bd64d8cfb)
2021-06-10 13:23:10 +02:00
.gitlab/issue_templates gitlab: rename RADV bug report template 2021-04-01 10:02:39 +00:00
.gitlab-ci gallium/u_vbuf: avoid dereferencing NULL pointer 2021-05-12 21:37:11 +02:00
bin pick-ui & .pick_status.json: rename master_sha to main_sha 2021-05-25 10:09:35 +02:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs docs/install: remove one extra when 2021-06-05 18:29:25 +02:00
doxygen doxygen: Plumb through gallium/ to automated documentation 2016-05-30 17:53:45 +01:00
include intel: Add 2 ADL-S pci-ids 2021-05-18 23:02:26 +02:00
src winsys/amdgpu: don't read bo->u.slab.entry after pb_slab_free 2021-06-10 13:23:10 +02:00
subprojects d3d12: Use DirectX-Headers wrap for d3d12.h 2020-12-16 16:25:54 +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: Update to latest ci-templates 2021-04-14 13:05:08 +00:00
.mailmap .mailmap: fix email for Daniel Schürmann 2021-03-22 18:56:22 +00:00
.pick_status.json winsys/amdgpu: don't read bo->u.slab.entry after pb_slab_free 2021-06-10 13:23:10 +02:00
.travis.yml scons: Remove. 2021-03-20 10:38:55 +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 meson: OpenMP is supposed to be optional 2021-04-20 19:42:28 +02:00
meson_options.txt venus: add driver skeleton 2021-04-08 17:15:37 +00:00
README.rst README: update references to internal docs 2020-06-13 10:42:01 +00:00
REVIEWERS scons: Remove. 2021-03-20 10:38:55 +00:00
VERSION VERSION: bump for 21.1.2 2021-06-02 21:02:51 +02:00

`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 `Freenode's #dri-devel
<irc://chat.freenode.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.