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John Stiles 7cde28909f Enforce basic limits on function stack size in SkSL. 
Functions that declare variables totaling more than 100,000 slots will
now generate an error.

This is only a partial mitigation to the problem, as a sophisticated
attack could still chain/nest multiple functions together to consume
extremely large amounts of stack. However, this mitigation is still more
sophisticated than our peers; both WebGL and glslang are susceptible to
similar problems, and in the general case (ES3+ with full flow control)
it's intractable.

Change-Id: I153c75267c017a23f59fe9e59f6e391197ee6101
Bug: oss-fuzz:40304, oss-fuzz:40694
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/467759
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-11-04 18:17:44 +00:00
animations first cut at a checkbox 2009-10-21 19:41:10 +00:00
bazel [infra] Add initial platforms and constraint values 2021-10-26 18:27:13 +00:00
bench Convert MiddleOutPolygonTriangulator to an iterator 2021-11-03 21:36:44 +00:00
bin [sk] Update asset download references to use SK 2021-09-17 16:55:53 +00:00
build/fuchsia [fuchsia] Fix fidlc command. 2020-06-10 03:29:24 +00:00
build_overrides Add Abseil dependency for Dawn 2021-09-22 22:05:32 +00:00
client_utils/android Make class members that are static constexpr also be inline. 2021-10-11 16:22:59 +00:00
demos.skia.org [demos] Add WebGPU demo using origin trial 2021-10-08 16:35:34 +00:00
dm [graphite] Rearrange internal Context/Recorder/Recording relationship 2021-10-15 13:51:59 +00:00
docker [infra] Update cmake docker image to be Debian 10 2021-07-23 11:21:31 +00:00
docs/examples Reland "Add sRGB 8888 colortype" 2021-08-24 12:56:32 +00:00
example Remove SDL from DEPS (and SDL example that used it) 2021-05-27 21:37:57 +00:00
experimental [graphite] Fix MSL FS generation 2021-11-04 16:56:02 +00:00
fuzz Make all shader caps uniquely-owned 2021-10-21 20:11:03 +00:00
gm Minor comment fixes in COLRv1 GM and implementation 2021-11-04 15:10:18 +00:00
gn Enforce basic limits on function stack size in SkSL. 2021-11-04 18:17:44 +00:00
include Enforce basic limits on function stack size in SkSL. 2021-11-04 18:17:44 +00:00
infra Remove V1/V2 compile bots 2021-11-04 16:27:38 +00:00
modules [skottie] Clean up FractalNoise and SkSLEffect 2021-11-02 13:27:15 +00:00
platform_tools change method signature for FontChain 2021-10-28 01:57:32 +00:00
resources Enforce basic limits on function stack size in SkSL. 2021-11-04 18:17:44 +00:00
samplecode Reland "Lift recursive curve culling out of tessellators" 2021-10-29 21:59:30 +00:00
site Update instructions for running debugger locally 2021-10-11 21:45:31 +00:00
specs [infra] Port serve.py from Python2 to 3 2021-08-31 15:28:19 +00:00
src Enforce basic limits on function stack size in SkSL. 2021-11-04 18:17:44 +00:00
tests Enforce basic limits on function stack size in SkSL. 2021-11-04 18:17:44 +00:00
third_party [infra] Add initial platforms and constraint values 2021-10-26 18:27:13 +00:00
toolchain [infra] Add hermetic toolchain for C/C++ using Clang+Musl 2021-10-21 12:43:49 +00:00
tools Add an SkVM panel to viewer's debug UI 2021-11-04 16:49:53 +00:00
.bazelrc [infra] Add hermetic toolchain for C/C++ using Clang+Musl 2021-10-21 12:43:49 +00:00
.clang-format no more bin packing in .clang-format 2021-03-04 17:22:50 +00:00
.clang-tidy Disable ClangTidy namespace comments for short blocks. 2020-08-24 14:01:22 +00:00
.gitignore Add .vscode to the default gitignore list. 2021-10-13 15:23:02 +00:00
.gn Pre-emptive fix for upcoming ANGLE change. 2021-01-08 17:23:52 +00:00
AUTHORS Add trusted service accounts to AUTHORS file 2021-09-29 20:18:40 +00:00
BUILD.bazel [infra] Add initial platforms and constraint values 2021-10-26 18:27:13 +00:00
BUILD.gn [graphite] Cleanup missed gpu_shared gn change. 2021-11-04 14:37:07 +00:00
codereview.settings Make uploading to Gerrit the default for Skia 2016-11-09 19:07:56 +00:00
CONTRIBUTING Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
CQ_COMMITTERS Moved committer list to chrome-infra-auth and deleted it from the repo 2015-09-02 13:37:54 -07:00
DEPS Roll ANGLE from 30b01d8fd1cf to 270a2c0ef4ee (3 revisions) 2021-11-04 14:27:44 +00:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-02 23:41:54 +00:00
go.mod [infra] Roll infra to update vpython 2021-09-10 17:41:28 +00:00
go.sum [infra] Roll infra to update vpython 2021-09-10 17:41:28 +00:00
LICENSE LICENSE file: clean up 2019-11-22 21:59:03 +00:00
OWNERS [infra] Add wildcard OWNERS 2021-08-30 19:19:34 +00:00
PRESUBMIT.py Remove AUTHORS check from PRESUBMIT.py 2021-09-30 14:12:18 +00:00
public.bzl Move ToolUtils::make_big_path() to bench/ 2021-10-14 12:57:29 +00:00
README Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
README.chromium Update README.chromium. 2015-06-11 13:19:24 -07:00
RELEASE_NOTES.txt Revert "Remove GPU-related calls from SkSurface.h when !SK_SUPPORT_GPU" 2021-10-28 17:19:03 +00:00
whitespace.txt Test SkCQ 2021-07-24 21:07:28 +00:00
WORKSPACE.bazel [infra] Add hermetic toolchain for C/C++ using Clang+Musl 2021-10-21 12:43:49 +00:00

README 

Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.

See full details, and build instructions, at https://skia.org.