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gerrit.omnirom.org / android_packages_modules_Virtualization / a51c6f07a896f102930f6f0b60b87036a7bbd6c6
commita51c6f07a896f102930f6f0b60b87036a7bbd6c6[log] [tgz]
authorDavid Brazdil <dbrazdil@google.com>Wed Oct 12 09:51:48 2022 +0000
committerDavid Brazdil <dbrazdil@google.com>Wed Oct 12 11:36:58 2022 +0000
tree351e78d8201c91681f4ea1b12c1b5e5a1a864bcf
parent8b38f3a7cb0c03005b5a05624f7f54e73d9b6ee2 [diff]
vmbase: Support LLVM and Bionic stack guard

C code compiled with the Android toolchain has stack guard checks
enabled. So as to avoid having to recompile every target with
-fno-stack-guard, instead add the expected symbols to vmbase.

This means we need __stack_chk_guard variable containing the canary
(used by all libc implementations [1]) and a thread-local storage containing
another copy of the canary at offset 40 (Bionic only [2]).

If the instrumentation detects an error, it calls __stack_chk_fail.
Provide an implementation that simply panics.

[1] bionic/tests/stack_protector_test.cpp
[2] https://reviews.llvm.org/D18632

Bug: 237372981
Test: atest vmbase_example.integration_test
Change-Id: I00de7c75aef6a57a73667df6983a12b01fbe9e51
4 files changed
tree: 351e78d8201c91681f4ea1b12c1b5e5a1a864bcf
  1. apex/
  2. apkdmverity/
  3. authfs/
  4. avmd/
  5. compos/
  6. demo/
  7. docs/
  8. javalib/
  9. launcher/
  10. libs/
  11. microdroid/
  12. microdroid_manager/
  13. pvmfw/
  14. rialto/
  15. tests/
  16. virtualizationservice/
  17. vm/
  18. vmbase/
  19. vmclient/
  20. zipfuse/
  21. rustfmt.toml ⇨ ../../../build/soong/scripts/rustfmt.toml
  22. .clang-format
  23. .gitignore
  24. Android.bp
  25. OWNERS
  26. PREUPLOAD.cfg
  27. README.md
  28. TEST_MAPPING
README.md

Virtualization

This repository contains userspace services related to running virtual machines on Android, especially protected virtual machines. See the getting started documentation and Microdroid README for more information.