bjoernager/rust
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Auto merge of #99679 - repnop:kernel-address-sanitizer, r=cuviper

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Add `kernel-address` sanitizer support for freestanding targets

This PR adds support for KASan (kernel address sanitizer) instrumentation in freestanding targets. I included the minimal set of `x86_64-unknown-none`, `riscv64{imac, gc}-unknown-none-elf`, and `aarch64-unknown-none` but there's likely other targets it can be added to. (`linux_kernel_base.rs`?) KASan uses the address sanitizer attributes but has the `CompileKernel` parameter set to `true` in the pass creation.
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bors 2023-02-18 03:05:11 +00:00
commit fabfd1fd93
18 changed files with 142 additions and 12 deletions
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3
compiler/rustc_codegen_ssa/src/codegen_attrs.rs
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@ -295,7 +295,8 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: DefId) -> CodegenFnAttrs {
if let Some(list) = attr.meta_item_list() {
for item in list.iter() {
if item.has_name(sym::address) {
codegen_fn_attrs.no_sanitize |= SanitizerSet::ADDRESS;
codegen_fn_attrs.no_sanitize |=
SanitizerSet::ADDRESS | SanitizerSet::KERNELADDRESS;
} else if item.has_name(sym::cfi) {
codegen_fn_attrs.no_sanitize |= SanitizerSet::CFI;
} else if item.has_name(sym::kcfi) {