diff options
| author | Laura Abbott <labbott@redhat.com> | 2018-07-20 23:41:54 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-07-26 12:36:34 +0200 |
| commit | 0b3e336601b82c6afa0e9cf21db9cb8793e25399 (patch) | |
| tree | 1ea6cdfc5d69f4ad5ad0e60ced11decc74ed0360 /arch/arm64/kvm | |
| parent | arm64: Add stack information to on_accessible_stack (diff) | |
| download | linux-0b3e336601b82c6afa0e9cf21db9cb8793e25399.tar.xz linux-0b3e336601b82c6afa0e9cf21db9cb8793e25399.zip | |
arm64: Add support for STACKLEAK gcc plugin
This adds support for the STACKLEAK gcc plugin to arm64 by implementing
stackleak_check_alloca(), based heavily on the x86 version, and adding the
two helpers used by the stackleak common code: current_top_of_stack() and
on_thread_stack(). The stack erasure calls are made at syscall returns.
Additionally, this disables the plugin in hypervisor and EFI stub code,
which are out of scope for the protection.
Acked-by: Alexander Popov <alex.popov@linux.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/hyp/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 4313f7475333..2fabc2dc1966 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -3,7 +3,8 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING \ + $(DISABLE_STACKLEAK_PLUGIN) KVM=../../../../virt/kvm |