[v3,0/9] UBSan Enablement for hyp/nVHE code
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Message ID 20210115171830.3602110-1-lenaptr@google.com
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  • UBSan Enablement for hyp/nVHE code
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Elena Petrova Jan. 15, 2021, 5:18 p.m. UTC 
Respin of George's patch series enabling UBSAN for hyp/nVHE code.

Updates in v3:
  * rebased onto v5.11-rc3
  * added base commit info

Updates in v2:
  * CONFIG_KVM_ARM_DEBUG_BUFFER removed; __kvm_check_ubsan_buffer is
    called directly instead of via __kvm_arm_check_debug_buffer.
  * Bugfixing commits removed as these are already upstream.
  * Some code brought up to date, i.e. moved from entry.S to host.S.
  * Merged "Add support for creating and checking a buffer" and
    "Add a buffer that can pass UBSan data from hyp/nVHE" into
    one commit as these changes don't work without each other.

George Popescu (9):
  KVM: arm64: Enable UBSan instrumentation in nVHE hyp code
  KVM: arm64: Add a buffer that can pass UBSan data from hyp/nVHE to
    kernel
  KVM: arm64: Enable UBSAN_BOUNDS for the both the kernel and hyp/nVHE
  KVM: arm64: Enable UBsan check for unreachable code inside hyp/nVHE
    code
  KVM: arm64: Enable shift out of bounds undefined behaviour check for
    hyp/nVHE
  KVM: arm64: __ubsan_handle_load_invalid_value EL2 implementation.
  KVM: arm64: Detect type mismatch undefined behaviour from hyp/nVHE
    code
  KVM: arm64: Detect arithmetic overflow is inside hyp/nVHE.
  KVM: arm64: Add UBSan tests for PKVM.

 arch/arm64/include/asm/assembler.h          |  10 ++
 arch/arm64/include/asm/kvm_debug_buffer.h   |  34 ++++
 arch/arm64/include/asm/kvm_host.h           |   8 +-
 arch/arm64/include/asm/kvm_ubsan.h          |  50 ++++++
 arch/arm64/kvm/Makefile                     |   2 +
 arch/arm64/kvm/arm.c                        |   9 ++
 arch/arm64/kvm/hyp/include/hyp/test_ubsan.h | 112 +++++++++++++
 arch/arm64/kvm/hyp/nvhe/Makefile            |   3 +-
 arch/arm64/kvm/hyp/nvhe/host.S              |   4 +
 arch/arm64/kvm/hyp/nvhe/hyp-main.c          |   3 +
 arch/arm64/kvm/hyp/nvhe/ubsan.c             | 164 ++++++++++++++++++++
 arch/arm64/kvm/kvm_ubsan_buffer.c           |  81 ++++++++++
 12 files changed, 478 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm64/include/asm/kvm_debug_buffer.h
 create mode 100644 arch/arm64/include/asm/kvm_ubsan.h
 create mode 100644 arch/arm64/kvm/hyp/include/hyp/test_ubsan.h
 create mode 100644 arch/arm64/kvm/hyp/nvhe/ubsan.c
 create mode 100644 arch/arm64/kvm/kvm_ubsan_buffer.c


base-commit: 5ee88057889bbca5f5bb96031b62b3756b33e164