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gerrit.omnirom.org / android_packages_modules_Virtualization / d40ff91f658df0a8abd33458673599ba728fe7f6
commitd40ff91f658df0a8abd33458673599ba728fe7f6[log] [tgz]
authorPierre-Clément Tosi <ptosi@google.com>Thu Jun 30 16:11:33 2022 +0100
committerPierre-Clément Tosi <ptosi@google.com>Thu Jun 30 17:52:28 2022 +0100
treef49e49c5a77b22d0536a1f84e4cc59e5faaf93cc
parent6decdfa2c6fa4e856af50c6052dd3ca1791a7619 [diff]
vmbase: Handle very early exceptions

Introduce a vector table to provide a predictable behavior when
exceptions are raised before the Rust runtime is ready i.e. before
vector_table_el1 may be used. With this table, exceptions are "handled"
by attempting a PSCI_SYSTEM_RESET call and hanging if that returns. For
example, this may prevent a malicious host from triggering a fault when
entry.S accesses .data or .bss in entry.S and getting arbitrary code
execution from VBAR_EL1.

Bug: 237659918
Test: atest vmbase_example.integration_test
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Change-Id: I5106e32b3118ec691ea6a7a80516d8c29918563c
3 files changed
tree: f49e49c5a77b22d0536a1f84e4cc59e5faaf93cc
  1. .prebuilt_info/
  2. apex/
  3. apkdmverity/
  4. authfs/
  5. compos/
  6. demo/
  7. docs/
  8. javalib/
  9. launcher/
  10. libs/
  11. microdroid/
  12. microdroid_manager/
  13. pvmfw/
  14. tests/
  15. virtualizationservice/
  16. vm/
  17. vmbase/
  18. vmclient/
  19. zipfuse/
  20. rustfmt.toml ⇨ ../../../build/soong/scripts/rustfmt.toml
  21. .clang-format
  22. .gitignore
  23. Android.bp
  24. OWNERS
  25. PREUPLOAD.cfg
  26. README.md
  27. 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.